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Anna Zdziennicka - One of the best experts on this subject based on the ideXlab platform.
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Correlation between adhesion of aqueous solutions of nonionic and anionic surfactant mixture with short-chain alcohols to polymer Surface and their adsorption at interfaces. II. Critical Surface Tension of polymer wetting and work of adhesion
International Journal of Adhesion and Adhesives, 2017Co-Authors: Magdalena Bielawska, Bronisław Jańczuk, Anna ZdziennickaAbstract:Abstract On the basis of contact angle measurements of aqueous solutions of TX-100 and SDDS mixtures with methanol, ethanol or propanol on PTFE and nylon-6 Surfaces presented in the first part of our paper and the literature data concerning the Surface Tension of the studied solutions, the Critical Surface Tension of polymer wetting was calculated and compared with its Surface Tension. Moreover, the work of adhesion of the solution to the PTFE Surface was determined directly from the Young-Dupre equation, together with the dependence between the adhesion Tension and the Surface Tension of the solution as well as between the cosine of the contact angle and the reciprocal of the Surface Tension of the solution. In the case of nylon-6, the work of adhesion was established on the basis of Neumann et al. and van Oss et al. approaches as well as the Young-Dupre equation. For both polymers work of adhesion was compared with the work of adhesion of particular components of the studied solutions to their Surfaces.
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wettability of polymers by aqueous solution of binary surfactants mixture with regard to adhesion in polymer solution system ii Critical Surface Tension of polymers wetting and work of adhesion
International Journal of Adhesion and Adhesives, 2013Co-Authors: Joanna Krawczyk, Anna Zdziennicka, Katarzyna Szymczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of the aqueous solution of CTAB+TX-100, CTAB+TX-114 and TX-100+TX-114 mixtures and those of the contact angle for the same solutions on PTFE, PMMA and nylon 6 Surface were applied for the studies of the correlation between the Critical Surface Tension of PTFE, PMMA and nylon 6 wetting and their Surface Tension as well as the influence of the kind, concentration and composition of the aqueous solutions of binary mixtures of surfactants and the adhesion to those polymers. From these studies it results that the Critical Surface Tension of PTFE wetting by the investigated solutions is somewhat higher than its Surface Tension determined from the contact angles for n-alkanes. However, the Critical Surface Tension of PMMA and nylon 6 wetting is lower than their Surface Tension determined by using the van Oss et al. approach to the interfacial Tension. The Critical Surface Tension of PMMA and nylon 6 wetting was also compared to their Surface Tension calculated from the Neumann equation. It was found that there is agreement between these values if the Surface Tension of these polymers was determined on the basis of the solution Surface Tension and contact angle data corresponding to the concentration equal or higher than the Critical micelle concentration.
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adhesion work and wettability of polytetrafluorethylene and poly methyl methacrylate by aqueous solutions of cetyltrimethylammonium bromide and triton x 100 mixture with ethanol
Journal of Colloid and Interface Science, 2013Co-Authors: Magdalena Bielawska, Bronislaw Janczuk, Anna ZdziennickaAbstract:Abstract The contact angle measurements of the aqueous solutions of p -( 1,1,3,3 - tetramethylbutyl ) phenoxypoly(ethylene glycol) (TX-100) and cetyltrimethylammonium bromide (CTAB) mixture with ethanol on polytetrafluoroethylene (PTFE) and poly (methyl methacrylate) (PMMA) were carried out in the range of the total concentration of TX-100 and CTAB mixture from 1 × 10 −6 to 1 × 10 −3 M and in the whole range of ethanol concentration. In the surfactant mixture, the mole fraction of TX-100 was equal to 0.2; 0.4; 0.6 and 0.8, respectively. From the obtained results, the Critical Surface Tension of PTFE and PMMA wetting and the adhesion work of the solutions to the polymer Surface were established. The PMMA Surface Tension was calculated from the Neumann’s equation. It appeared that for the ethanol concentration higher than that corresponding to the association of its molecules, the Surface Tension of PMMA calculated from the Neumann’s equation is close to the Critical Surface Tension of PMMA wetting. It also appeared that it is possible to predict the work of adhesion of the studied solutions to the PMMA Surface by using the PMMA Surface Tension data determined on the basis of the van Oss et al. approach to the interfacial Tension and those from the Neumann’s equation.
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adsorption of triton x 100 and cetyltrimethylammonium bromide mixture with ethanol at nylon 6 solution interface with regard to nylon 6 wettability i the effect of adsorption on Critical Surface Tension of nylon 6 wetting
Adsorption-journal of The International Adsorption Society, 2013Co-Authors: Magdalena Bielawska, Bronislaw Janczuk, Anna ZdziennickaAbstract:The contact angle measurements of the aqueous solutions of p-(1,1,3,3-tetramethylbutyl)phenoxypoly(ethylene glycol) (TX-100) and cetyltrimethylammonium bromide (CTAB) mixture with ethanol on nylon-6 were made in the range of the total concentration of CTAB and TX-100 mixture from 1 × 10−6 to 1 × 10−3 M and ethanol from 0 to 17.13 M. In the CTAB and TX-100 mixture the mole fraction of TX-100 was equal to 0; 0.2; 0.4; 0.6; 0.8 and 1. On the basis of the obtained results, the Critical Surface Tension of nylon-6 wetting was determined from the dependence of cosine of contact angle and the adhesion Tension as a function of the Surface Tension of the solution. This Tension was compared to the components and parameters of nylon-6 Surface Tension taken from literature and discussed in the light of the Surface excess concentration of the Surface active agents at the nylon-6–solution interface calculated from the Lucassen-Reynders equation and the Gibbs isotherm.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system ii work of adhesion and adsorption of surfactant at polymer solution and solution air interfaces
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide and those of contact angle measured in the polytetrafluoroethylene (polymethyl methacrylate, nylon 6)–solution–air system were applied for the studies of correlation between the adsorption of surfactants at the solution–air and polymer–solution interfaces, Critical Surface Tension of polymer wetting and work of adhesion of aqueous solutions of these surfactants to the above mentioned polymer Surfaces. On the basis of the Surface Tension of aqueous solutions of surfactants studied and polymer–solution interface Tension the Gibbs Surface excess concentration at the polymer–solution interface was calculated and compared to that at the solution–air one. Using the Gibbs Surface excess concentration data the molar fraction of surfactants at the polymer–solution interface was determined and compared to that at the solution–air one. The values of the activity of surfactants at the polymer–solution interface obtained from the Sprow and Prausnitz equation were also compared to those at the solution–air one and next used for calculations of the work of adhesion of solution to the polymer Surface. The obtained values were compared to those determined from the Young–Dupree equation.
Bronislaw Janczuk - One of the best experts on this subject based on the ideXlab platform.
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wettability of polymers by aqueous solution of binary surfactants mixture with regard to adhesion in polymer solution system ii Critical Surface Tension of polymers wetting and work of adhesion
International Journal of Adhesion and Adhesives, 2013Co-Authors: Joanna Krawczyk, Anna Zdziennicka, Katarzyna Szymczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of the aqueous solution of CTAB+TX-100, CTAB+TX-114 and TX-100+TX-114 mixtures and those of the contact angle for the same solutions on PTFE, PMMA and nylon 6 Surface were applied for the studies of the correlation between the Critical Surface Tension of PTFE, PMMA and nylon 6 wetting and their Surface Tension as well as the influence of the kind, concentration and composition of the aqueous solutions of binary mixtures of surfactants and the adhesion to those polymers. From these studies it results that the Critical Surface Tension of PTFE wetting by the investigated solutions is somewhat higher than its Surface Tension determined from the contact angles for n-alkanes. However, the Critical Surface Tension of PMMA and nylon 6 wetting is lower than their Surface Tension determined by using the van Oss et al. approach to the interfacial Tension. The Critical Surface Tension of PMMA and nylon 6 wetting was also compared to their Surface Tension calculated from the Neumann equation. It was found that there is agreement between these values if the Surface Tension of these polymers was determined on the basis of the solution Surface Tension and contact angle data corresponding to the concentration equal or higher than the Critical micelle concentration.
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adhesion work and wettability of polytetrafluorethylene and poly methyl methacrylate by aqueous solutions of cetyltrimethylammonium bromide and triton x 100 mixture with ethanol
Journal of Colloid and Interface Science, 2013Co-Authors: Magdalena Bielawska, Bronislaw Janczuk, Anna ZdziennickaAbstract:Abstract The contact angle measurements of the aqueous solutions of p -( 1,1,3,3 - tetramethylbutyl ) phenoxypoly(ethylene glycol) (TX-100) and cetyltrimethylammonium bromide (CTAB) mixture with ethanol on polytetrafluoroethylene (PTFE) and poly (methyl methacrylate) (PMMA) were carried out in the range of the total concentration of TX-100 and CTAB mixture from 1 × 10 −6 to 1 × 10 −3 M and in the whole range of ethanol concentration. In the surfactant mixture, the mole fraction of TX-100 was equal to 0.2; 0.4; 0.6 and 0.8, respectively. From the obtained results, the Critical Surface Tension of PTFE and PMMA wetting and the adhesion work of the solutions to the polymer Surface were established. The PMMA Surface Tension was calculated from the Neumann’s equation. It appeared that for the ethanol concentration higher than that corresponding to the association of its molecules, the Surface Tension of PMMA calculated from the Neumann’s equation is close to the Critical Surface Tension of PMMA wetting. It also appeared that it is possible to predict the work of adhesion of the studied solutions to the PMMA Surface by using the PMMA Surface Tension data determined on the basis of the van Oss et al. approach to the interfacial Tension and those from the Neumann’s equation.
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adsorption of triton x 100 and cetyltrimethylammonium bromide mixture with ethanol at nylon 6 solution interface with regard to nylon 6 wettability i the effect of adsorption on Critical Surface Tension of nylon 6 wetting
Adsorption-journal of The International Adsorption Society, 2013Co-Authors: Magdalena Bielawska, Bronislaw Janczuk, Anna ZdziennickaAbstract:The contact angle measurements of the aqueous solutions of p-(1,1,3,3-tetramethylbutyl)phenoxypoly(ethylene glycol) (TX-100) and cetyltrimethylammonium bromide (CTAB) mixture with ethanol on nylon-6 were made in the range of the total concentration of CTAB and TX-100 mixture from 1 × 10−6 to 1 × 10−3 M and ethanol from 0 to 17.13 M. In the CTAB and TX-100 mixture the mole fraction of TX-100 was equal to 0; 0.2; 0.4; 0.6; 0.8 and 1. On the basis of the obtained results, the Critical Surface Tension of nylon-6 wetting was determined from the dependence of cosine of contact angle and the adhesion Tension as a function of the Surface Tension of the solution. This Tension was compared to the components and parameters of nylon-6 Surface Tension taken from literature and discussed in the light of the Surface excess concentration of the Surface active agents at the nylon-6–solution interface calculated from the Lucassen-Reynders equation and the Gibbs isotherm.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system ii work of adhesion and adsorption of surfactant at polymer solution and solution air interfaces
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide and those of contact angle measured in the polytetrafluoroethylene (polymethyl methacrylate, nylon 6)–solution–air system were applied for the studies of correlation between the adsorption of surfactants at the solution–air and polymer–solution interfaces, Critical Surface Tension of polymer wetting and work of adhesion of aqueous solutions of these surfactants to the above mentioned polymer Surfaces. On the basis of the Surface Tension of aqueous solutions of surfactants studied and polymer–solution interface Tension the Gibbs Surface excess concentration at the polymer–solution interface was calculated and compared to that at the solution–air one. Using the Gibbs Surface excess concentration data the molar fraction of surfactants at the polymer–solution interface was determined and compared to that at the solution–air one. The values of the activity of surfactants at the polymer–solution interface obtained from the Sprow and Prausnitz equation were also compared to those at the solution–air one and next used for calculations of the work of adhesion of solution to the polymer Surface. The obtained values were compared to those determined from the Young–Dupree equation.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system i Critical Surface Tension of polymer wetting and its Surface Tension
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The contact angle of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide on polytetrafluoroethylene, polymethyl methacrylate and nylon 6 was studied. The contact angle values were used in the Young equation for the polymer–solution interface Tension calculation and for the determination of the Critical Surface Tension of polymer wetting. The Critical Surface Tension of polymer wetting was obtained on the basis of the relationship between the cosine of contact angle and/or the adhesion Tension as a function of the Surface Tension of aqueous solution of studied surfactants and then was discussed in relation to the Lifshitz–van der Waals components and electron-acceptor and electron-donor parameters of polytetrafluoroethylene, polymethyl methacrylate and nylon 6 Surface Tension. The role of the parameter of interfacial interactions in the relationship between the Critical Surface Tension of polymer wetting and the Surface Tension was also considered. This parameter was calculated by using the polymer–solution interface Tension as well as the polymer and aqueous solutions of surfactant Surface Tension.
A. Ozkan - One of the best experts on this subject based on the ideXlab platform.
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effect of contact angle Surface Tension and zeta potential on oil agglomeration of celestite
Minerals Engineering, 2014Co-Authors: S Duzyol, A. OzkanAbstract:Abstract The influences of contact angle, Surface Tension and zeta potential on oil agglomeration recovery of celestite mineral have been investigated in the present work. Therefore, celestite mineral in methanol–water suspension was agglomerated by the use of oil (kerosene) in the presence of sodium oleate as a surfactant. The zeta potential values of celestite Surfaces were measured depending on pH and sodium oleate concentration. The zeta potential values of celestite Surfaces became negative even more owing to the sodium oleate adsorption. However, this phenomenon did not affect the oil agglomeration recovery at all. It was found that both increasing contact angle and Surface Tension raised the oil agglomeration recovery of celestite mineral. Eventually, the agglomeration degree of celestite mineral in the suspension was not lower than a particular Surface Tension value corresponding to the Critical solution Surface Tension for oil agglomeration (γc-a). The γc-a values were slightly greater than the Critical Surface Tension of wetting (γc) values.
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Critical solution Surface Tension for liquid liquid extraction
Separation and Purification Technology, 2010Co-Authors: A. Ozkan, S DuzyolAbstract:Abstract This paper introduces a strong correlation between the solution Surface Tension and the liquid–liquid extraction process of minerals. It was found that the liquid–liquid extraction recoveries of celestite, magnesite and dolomite minerals decreased with decreasing solution Surface Tension, and eventually the liquid–liquid extraction of these minerals did not take place below a particular value of the solution Surface Tension. The solution Surface Tension value at which liquid–liquid extraction does not occur was defined as ‘the Critical solution Surface Tension for liquid–liquid extraction, γc-e’. Consequently, the solution Surface Tension value for a successful liquid–liquid extraction of a mineral must be higher than the Critical solution Surface Tension of liquid–liquid extraction (γc-e) value. In addition, the experimental results have demonstrated that the γc-e values obtained from liquid–liquid extraction tests of these minerals were slightly higher than their Critical Surface Tension of wetting (γc) values based on the contact angle measurement technique. These differences between the γc-e and the γc values indicate that the liquid–liquid extraction process of the minerals took place after reaching a sufficiently low wettability.
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Critical solution Surface Tension for oil agglomeration
International Journal of Mineral Processing, 2005Co-Authors: A. Ozkan, Salih Aydoğan, M. YekelerAbstract:Abstract This paper presents the effect of Surface Tension of solution used as medium for the oil agglomeration of minerals. Naturally occurring hydrophobic and hydrophilic minerals are used in this study. It was determined that the oil agglomeration recoveries of these minerals decreased with decreasing solution Surface Tension and the oil agglomeration process of the mineral did not occur below a particular value of solution Surface Tension. The solution Surface Tension value at which oil agglomeration does not take place was defined as ‘the Critical solution Surface Tension for oil agglomeration, γ c−a '. These Critical solution Surface Tension values obtained for those hydrophobic minerals were close to their Critical Surface Tension of wetting ( γ c ) values. On the other hand, the γ c−a values obtained for the hydrophilic minerals treated with surfactants were slightly higher than their γ c values. For a successful oil agglomeration of a mineral, the solution Surface Tension value must be higher than the Critical Surface Tension of oil agglomeration ( γ c−a ).
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determination of the Critical Surface Tension of wetting of minerals treated with surfactants by shear flocculation approach
Journal of Colloid and Interface Science, 2004Co-Authors: A. OzkanAbstract:Abstract This paper contributes the shear flocculation method as a new approach to determine the Critical Surface Tension of wetting of minerals treated with surfactants. This newly developed approach is based on the decrease of the shear flocculation of the mineral suspension, with decreasing of the Surface Tension of the liquids used. The solution Surface Tension value at which shear flocculation does not occur can be defined as the Critical Surface Tension of wetting (γc) of the mineral. By using the shear flocculation method, the Critical Surface Tensions of wetting (γc) for calcite and barite minerals, treated with surfactants, were obtained as 30.9 and 35.0 mN/m, respectively. These values are in good agreement with data reported previously on the same minerals obtained by the contact angle measurement and flotation methods. The chemical agents used for the treatment of calcite and barite particles were sodium oleate and sodium dodecyl sulfate, respectively.
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correlation of the breakage parameters with the Critical Surface Tension for wetting of barite
Powder Technology, 2003Co-Authors: M. Yekeler, A. OzkanAbstract:Abstract In this paper, we present a correlation and experimental data for a relationship between the breakage and the wettability for barite mineral. The breakage parameters, which are readily obtained from grinding test, are the specific rates of breakage ( S i ) and the fineness value ( γ ) of the primary breakage distribution function ( B i , j ). The wettability parameter, which is easily obtained from contact angle measurements or flotation tests, is the Critical Surface Tension for wetting of any mineral ( γ c ). The barite sample studied for the correlations was ground in a laboratory-size porcelain ball mill and tested extensively for wettability using a contact angle goniometer and our newly designed micro-column flotation cell. There is a significant relationship between the S i and γ c values from our experimental work on the barite sample, where the higher S i means lower γ c , i.e., a mineral was more hydrophobic when it had a higher S i value, or a more rapid breakage of the top sizes leads to better hydrophobicity or floatability. Another relationship was found between the fineness value ( γ ) of the breakage and the Critical Surface Tension for wetting ( γ c ), which indicates that as the γ value increases (meaning less fines produced), the γ c increases (meaning less hydrophobicity) based on the contact angle and flotation tests.
Katarzyna Szymczyk - One of the best experts on this subject based on the ideXlab platform.
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wettability of polymers by aqueous solution of binary surfactants mixture with regard to adhesion in polymer solution system ii Critical Surface Tension of polymers wetting and work of adhesion
International Journal of Adhesion and Adhesives, 2013Co-Authors: Joanna Krawczyk, Anna Zdziennicka, Katarzyna Szymczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of the aqueous solution of CTAB+TX-100, CTAB+TX-114 and TX-100+TX-114 mixtures and those of the contact angle for the same solutions on PTFE, PMMA and nylon 6 Surface were applied for the studies of the correlation between the Critical Surface Tension of PTFE, PMMA and nylon 6 wetting and their Surface Tension as well as the influence of the kind, concentration and composition of the aqueous solutions of binary mixtures of surfactants and the adhesion to those polymers. From these studies it results that the Critical Surface Tension of PTFE wetting by the investigated solutions is somewhat higher than its Surface Tension determined from the contact angles for n-alkanes. However, the Critical Surface Tension of PMMA and nylon 6 wetting is lower than their Surface Tension determined by using the van Oss et al. approach to the interfacial Tension. The Critical Surface Tension of PMMA and nylon 6 wetting was also compared to their Surface Tension calculated from the Neumann equation. It was found that there is agreement between these values if the Surface Tension of these polymers was determined on the basis of the solution Surface Tension and contact angle data corresponding to the concentration equal or higher than the Critical micelle concentration.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system ii work of adhesion and adsorption of surfactant at polymer solution and solution air interfaces
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide and those of contact angle measured in the polytetrafluoroethylene (polymethyl methacrylate, nylon 6)–solution–air system were applied for the studies of correlation between the adsorption of surfactants at the solution–air and polymer–solution interfaces, Critical Surface Tension of polymer wetting and work of adhesion of aqueous solutions of these surfactants to the above mentioned polymer Surfaces. On the basis of the Surface Tension of aqueous solutions of surfactants studied and polymer–solution interface Tension the Gibbs Surface excess concentration at the polymer–solution interface was calculated and compared to that at the solution–air one. Using the Gibbs Surface excess concentration data the molar fraction of surfactants at the polymer–solution interface was determined and compared to that at the solution–air one. The values of the activity of surfactants at the polymer–solution interface obtained from the Sprow and Prausnitz equation were also compared to those at the solution–air one and next used for calculations of the work of adhesion of solution to the polymer Surface. The obtained values were compared to those determined from the Young–Dupree equation.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system i Critical Surface Tension of polymer wetting and its Surface Tension
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The contact angle of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide on polytetrafluoroethylene, polymethyl methacrylate and nylon 6 was studied. The contact angle values were used in the Young equation for the polymer–solution interface Tension calculation and for the determination of the Critical Surface Tension of polymer wetting. The Critical Surface Tension of polymer wetting was obtained on the basis of the relationship between the cosine of contact angle and/or the adhesion Tension as a function of the Surface Tension of aqueous solution of studied surfactants and then was discussed in relation to the Lifshitz–van der Waals components and electron-acceptor and electron-donor parameters of polytetrafluoroethylene, polymethyl methacrylate and nylon 6 Surface Tension. The role of the parameter of interfacial interactions in the relationship between the Critical Surface Tension of polymer wetting and the Surface Tension was also considered. This parameter was calculated by using the polymer–solution interface Tension as well as the polymer and aqueous solutions of surfactant Surface Tension.
Joanna Krawczyk - One of the best experts on this subject based on the ideXlab platform.
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wettability of polymers by aqueous solution of binary surfactants mixture with regard to adhesion in polymer solution system ii Critical Surface Tension of polymers wetting and work of adhesion
International Journal of Adhesion and Adhesives, 2013Co-Authors: Joanna Krawczyk, Anna Zdziennicka, Katarzyna Szymczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of the aqueous solution of CTAB+TX-100, CTAB+TX-114 and TX-100+TX-114 mixtures and those of the contact angle for the same solutions on PTFE, PMMA and nylon 6 Surface were applied for the studies of the correlation between the Critical Surface Tension of PTFE, PMMA and nylon 6 wetting and their Surface Tension as well as the influence of the kind, concentration and composition of the aqueous solutions of binary mixtures of surfactants and the adhesion to those polymers. From these studies it results that the Critical Surface Tension of PTFE wetting by the investigated solutions is somewhat higher than its Surface Tension determined from the contact angles for n-alkanes. However, the Critical Surface Tension of PMMA and nylon 6 wetting is lower than their Surface Tension determined by using the van Oss et al. approach to the interfacial Tension. The Critical Surface Tension of PMMA and nylon 6 wetting was also compared to their Surface Tension calculated from the Neumann equation. It was found that there is agreement between these values if the Surface Tension of these polymers was determined on the basis of the solution Surface Tension and contact angle data corresponding to the concentration equal or higher than the Critical micelle concentration.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system ii work of adhesion and adsorption of surfactant at polymer solution and solution air interfaces
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The values of the Surface Tension of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide and those of contact angle measured in the polytetrafluoroethylene (polymethyl methacrylate, nylon 6)–solution–air system were applied for the studies of correlation between the adsorption of surfactants at the solution–air and polymer–solution interfaces, Critical Surface Tension of polymer wetting and work of adhesion of aqueous solutions of these surfactants to the above mentioned polymer Surfaces. On the basis of the Surface Tension of aqueous solutions of surfactants studied and polymer–solution interface Tension the Gibbs Surface excess concentration at the polymer–solution interface was calculated and compared to that at the solution–air one. Using the Gibbs Surface excess concentration data the molar fraction of surfactants at the polymer–solution interface was determined and compared to that at the solution–air one. The values of the activity of surfactants at the polymer–solution interface obtained from the Sprow and Prausnitz equation were also compared to those at the solution–air one and next used for calculations of the work of adhesion of solution to the polymer Surface. The obtained values were compared to those determined from the Young–Dupree equation.
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wettability adhesion adsorption and interface Tension in the polymer surfactant aqueous solution system i Critical Surface Tension of polymer wetting and its Surface Tension
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Co-Authors: Katarzyna Szymczyk, Anna Zdziennicka, Joanna Krawczyk, Bronislaw JanczukAbstract:Abstract The contact angle of aqueous solutions of Triton X-100, Triton X-114, Triton X-165, sodium dodecylsulfate, sodium hexadecylsulfonate, cetyltrimethylammonium bromide, cetylpyridinium bromide, sodium N-lauryl sarcosinate, dodecyldimethyethylammonium bromide, tetradecyltrimethylammonium bromide and benzyldimethyldodecylammonium bromide on polytetrafluoroethylene, polymethyl methacrylate and nylon 6 was studied. The contact angle values were used in the Young equation for the polymer–solution interface Tension calculation and for the determination of the Critical Surface Tension of polymer wetting. The Critical Surface Tension of polymer wetting was obtained on the basis of the relationship between the cosine of contact angle and/or the adhesion Tension as a function of the Surface Tension of aqueous solution of studied surfactants and then was discussed in relation to the Lifshitz–van der Waals components and electron-acceptor and electron-donor parameters of polytetrafluoroethylene, polymethyl methacrylate and nylon 6 Surface Tension. The role of the parameter of interfacial interactions in the relationship between the Critical Surface Tension of polymer wetting and the Surface Tension was also considered. This parameter was calculated by using the polymer–solution interface Tension as well as the polymer and aqueous solutions of surfactant Surface Tension.