The Experts below are selected from a list of 5148 Experts worldwide ranked by ideXlab platform
Mashitah M. Yusoff - One of the best experts on this subject based on the ideXlab platform.
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improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose poly vinyl alcohol nanofibers scaffold
Journal of Biomaterials Applications, 2015Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
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Improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose/poly(vinyl) alcohol nanofibers scaffold.
Journal of biomaterials applications, 2014Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
Yong Huang - One of the best experts on this subject based on the ideXlab platform.
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Photoinduced graft copolymerization of polymer surfactants based on Hydroxyethyl Cellulose
Journal of Photochemistry and Photobiology A: Chemistry, 2007Co-Authors: Linge Wang, Yong HuangAbstract:Abstract A novel polymer surfactant, Hydroxyethyl Cellulose-based copolymer, was prepared via ultraviolet (UV) irradiation by copolymerizing Hydroxyethyl Cellulose (HEC) with hexadecyl acrylate (HDA) and comonomer styrene (St) in aqueous solution. The purified graft copolymer was characterized by FT-IR and 1 H NMR, which showed that HDA and St were grafted on HEC chains under UV irradiation. Effects of UV irradiation time, pH value of the reaction solution and monomer volume percent in the feed on the chemical structure and the surface tension of graft copolymer were investigated. The result showed that the grafting of HDA on the HEC was limited by the grafting of St under UV irradiation, and the graft copolymer performed excellent surface activity when the grafting was under an appropriate conditions (i.e. both the volume percent of HDA and St in the feed were 4% (v/v), the pH value of the reaction solution was 7 and the UV irradiation time was 1 h).
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Morphology of polyethylene blended with thermotropic Hydroxyethyl Cellulose acetate
Journal of Applied Polymer Science, 1998Co-Authors: Jinming Chen, Yong Huang, Hailin Wang, Jiarui ShenAbstract:Morphology of low-density polyethylene (PE)/thermotropic Hydroxyethyl Cellulose acetate (HECA) blends, and the melting and crystallization behavior of PE in the blends were studied. The sea island morphology was observed in PE/HECA blends. The process of melting and crystallization of PE in blends was independent of the HECA fraction when the PE fraction was larger than 50 wt %. When the PE fraction is smaller than 20 wt %, however, multiple crystallization was observed in the low temperature region. HECA was incompatible with PE crystals in the blends, but partially compatible with the amorphous part of PE. HECA could exist between the PE lamellae in PE spherulites, and concentric ring morphology was observed in spherulites.
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Kinetics of Nonisothermal Transformations of Thermotropic Hydroxyethyl Cellulose Acetate
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1996Co-Authors: Yong Huang, H. L. Wang, Q. Tan, J. ZengAbstract:Abstract The kinetics of non-isothermal transformation from isotropic to anisotropic phases of Hydroxyethyl Cellulose acetate (HECA) was studied by DSC at different cooling rates. It was found that the modified Avrami equation could be used in study and the exponent n was closed to 1. The rate of transformation increased with decreasing temperature and the apparent activation energy E was about 2.641 KJ/mol. The half-time of transformation t ½ was smaller than that of polymer crystallization and increased with temperature. The rate of transformation appears the maximum with temperature and the temperature at the largest rate of transformation shifted towards the low temperature with increasing cooling rate and the kinetic ability of transformation was also enlarged.
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Characterization of Hydroxyethyl Cellulose Acetate
1995Co-Authors: Mohammad Siddiq, Suhong Jiang, Yong HuangAbstract:\, SYNOPSIS A recently developed analytical method of combining off-line laser light scattering (LLS) and size exclusion chromatography (SEC) was used to investigate a set of moderately distributed Hydroxyethyl Cellulose acetate{~ECA) samples' in tetrahydrofuran (THF) at room temperature. Our results have shown that this new LLS + SEC method is suitable for the characterization of molecular weight distribution of HECA. By using this method, we have simultaneously determined two calibrations of V (cm3) =' 45.3 ~ 1.89 log (M) and D (cm2/s) = 2.45 X 10-4 M-o.so, where M is the molecular weight of HECA; V, the elution volume in SEC; and D, the translational diffusion coefficient in dynamic LLS. In addition. our results have also indicated that the chain conformation of HECA in THF at room temperature is a slightly extended linear coil. @ 1995 John Wiley & Sons,lnc. ,: '" . between its~~~~~otropic behaviors and itsmolec-
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Molecular interactions and formation of lyotropic liquid crystals of Hydroxyethyl Cellulose acetate
Polymer Bulletin, 1995Co-Authors: Yong Huang, Wen Liang, Jiarui ShenAbstract:The relationship between the hydrogen bond (H-bond) interactions and the formation of the cholesteric liquid crystalline phase was studied by Fourier transform infrared spectroscopy (FTIR), refractometry and polarizing microscopy. It was quite evident that the H-bonding played an important role in the early stage of the formation of cholesteric liquid crystalline phase in Hydroxyethyl Cellulose acetate (HECA)/dimethyl sulfoxide (DMSO) solutions and the rigidity of the HECA chains was more important to form liquid crystalline phase than molecular interactions when the concentration is very high.
Farah Hanani Zulkifli - One of the best experts on this subject based on the ideXlab platform.
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improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose poly vinyl alcohol nanofibers scaffold
Journal of Biomaterials Applications, 2015Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
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Improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose/poly(vinyl) alcohol nanofibers scaffold.
Journal of biomaterials applications, 2014Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
Mohammad Syaiful Bahari Abdull Rasad - One of the best experts on this subject based on the ideXlab platform.
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improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose poly vinyl alcohol nanofibers scaffold
Journal of Biomaterials Applications, 2015Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
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Improved cellular response of chemically crosslinked collagen incorporated Hydroxyethyl Cellulose/poly(vinyl) alcohol nanofibers scaffold.
Journal of biomaterials applications, 2014Co-Authors: Farah Hanani Zulkifli, Fathima Shahitha Jahir Hussain, Mohammad Syaiful Bahari Abdull Rasad, Mashitah M. YusoffAbstract:The aim of this research is to develop biocompatible nanofibrous mats using Hydroxyethyl Cellulose with improved cellular adhesion profiles and stability and use these fibrous mats as potential scaffold for skin tissue engineering. Glutaraldehyde was used to treat the scaffolds water insoluble as well as improve their biostability for possible use in biomedical applications. Electrospinning of Hydroxyethyl Cellulose (5 wt%) with poly(vinyl alcohol) (15 wt%) incorporated with and without collagen was blended at (1:1:1) and (1:1) ratios, respectively, and was evaluated for optimal criteria as tissue engineering scaffolds. The nanofibrous mats were crosslinked and characterized by scanning electron microscope, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Scanning electron microscope images showed that the mean diameters of blend nanofibers were gradually increased after chem- ically crosslinking with glutaraldehyde. Fourier transform infrared spectroscopy was carried out to understand chemical interactions in the presence of aldehyde groups. Thermal characterization results showed that the stability of hydro- xyethyl Cellulose/poly(vinyl alcohol) and Hydroxyethyl Cellulose/poly(vinyl alcohol)/collagen nanofibers was increased with glutaraldehyde treatment. Studies on cell-scaffolds interaction were carried out by culturing human fibroblast (hFOB) cells on the nanofibers by assessing the growth, proliferation, and morphologies of cells. The scanning electron micro- scope results show that better cell proliferation and attachment appeared on Hydroxyethyl Cellulose/poly(vinyl alcohol)/ collagen substrates after 7 days of culturing, thus, promoting the potential of electrospun scaffolds as a promising candidate for tissue engineering applications.
Per M. Claesson - One of the best experts on this subject based on the ideXlab platform.
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Temperature-dependent adsorption and surface forces in aqueous ethyl(Hydroxyethyl)Cellulose solutions
Langmuir, 1991Co-Authors: Martin Malmsten, Per M. ClaessonAbstract:Forces between hydrophobized mica surfaces across an aqueous solution of ethyl(Hydroxyethyl)Cellulose (EHEC) have been studied, inter alia, as a function of surface separation and temperature. EHEC ...
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Forces between hydrophobic surfaces coated with ethyl(Hydroxyethyl)Cellulose in the presence of an ionic surfactant
Langmuir, 1991Co-Authors: Per M. Claesson, Martin Malmsten, Björn LindmanAbstract:The forces between hydrophobic surfaces across an aqueous solution containing 0.25% ethyl(Hydroxyethyl)Cellulose (EHEC) and 4 mM SDS have been studied and compared with the situation in the absence ...
