The Experts below are selected from a list of 4011 Experts worldwide ranked by ideXlab platform
Jaunius Urbonavicius - One of the best experts on this subject based on the ideXlab platform.
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the effect of different plant oil impregnation and hardening temperatures on physical mechanical properties of modified biocomposite boards made of hemp shives and corn starch
Materials, 2020Co-Authors: Dovilė Vasiliauskienė, Giedrius Balciūnas, Renata Boris, Agnė Kairytė, Arūnas Kremensas, Jaunius UrbonaviciusAbstract:In this study, tung tree and linseed Drying Oils, as well as semi-Drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m2), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.
Dovilė Vasiliauskienė - One of the best experts on this subject based on the ideXlab platform.
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the effect of different plant oil impregnation and hardening temperatures on physical mechanical properties of modified biocomposite boards made of hemp shives and corn starch
Materials, 2020Co-Authors: Dovilė Vasiliauskienė, Giedrius Balciūnas, Renata Boris, Agnė Kairytė, Arūnas Kremensas, Jaunius UrbonaviciusAbstract:In this study, tung tree and linseed Drying Oils, as well as semi-Drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m2), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.
Juan Manuel Madariaga - One of the best experts on this subject based on the ideXlab platform.
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classification and identification of organic binding media in artworks by means of fourier transform infrared spectroscopy and principal component analysis
Analytical and Bioanalytical Chemistry, 2011Co-Authors: A Sarmiento, M Perezalonso, Maitane Olivares, Kepa Castro, I Martinezarkarazo, L A Fernandez, Juan Manuel MadariagaAbstract:Fourier transform infrared spectroscopy is a powerful analytical technique to study organic materials. However, in Cultural Heritage, since the sample under analysis is always a complicated matrix of several materials, data analysis performed through peak-by-peak comparisons of sample spectra with those of standard compounds is a tedious method that does not always provide good results. To overcome this problem, a chemometric model based on principal component analysis was developed to classify and identify organic binding media in artworks. The model allows the differentiation of five families of binders: Drying Oils, waxes, proteins, gums, and resins, taking into account the absorption bands in two characteristic spectral windows: C–H stretching and carbonyl band. This new methodology was applied in the characterization of binders in three kinds of artworks: papers of historical, archeological, and artistic value, easel paintings, and polychromed stone-based sculptures.
Arūnas Kremensas - One of the best experts on this subject based on the ideXlab platform.
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the effect of different plant oil impregnation and hardening temperatures on physical mechanical properties of modified biocomposite boards made of hemp shives and corn starch
Materials, 2020Co-Authors: Dovilė Vasiliauskienė, Giedrius Balciūnas, Renata Boris, Agnė Kairytė, Arūnas Kremensas, Jaunius UrbonaviciusAbstract:In this study, tung tree and linseed Drying Oils, as well as semi-Drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m2), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.
Agnė Kairytė - One of the best experts on this subject based on the ideXlab platform.
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the effect of different plant oil impregnation and hardening temperatures on physical mechanical properties of modified biocomposite boards made of hemp shives and corn starch
Materials, 2020Co-Authors: Dovilė Vasiliauskienė, Giedrius Balciūnas, Renata Boris, Agnė Kairytė, Arūnas Kremensas, Jaunius UrbonaviciusAbstract:In this study, tung tree and linseed Drying Oils, as well as semi-Drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m2), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.
