The Experts below are selected from a list of 1896 Experts worldwide ranked by ideXlab platform
Stephane Guilbert - One of the best experts on this subject based on the ideXlab platform.
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mechanical and water barrier properties of corn protein based biodegradable plastics
Journal of Materials Research, 2000Co-Authors: Lodovico Di Gioia, Stephane GuilbertAbstract:Experiments were performed to evaluate the mechanical and water barrier properties of corn-protein-based materials that were compression molded from Thermoplastic Resins. The influence of varying concentrations of water, glycerol, and octanoic acid was studied. At 0% relative humidity, the material exhibited a linear elastic deformation and a brittle fracture at any glycerol or octanoic acid content. Raising relative humidity from 0% to 97.3%, progressively decreased the tensile strength (from 24.1 to 2.2 MPa and 19.4 to 1.0 MPa), and the modulus of elasticity (from 1.67 to 0.03 GPa and 1.87 to 0.13 GPa), respectively, for the octanoic acid- or glycerol-plasticized materials. Increasing water content did not increase the tensile strain at break of the glycerol-plasticized material, whereas this parameter changed from 1.6 to 52.3% for octanoic-acid-plasticized material. This last material was waterproof during 21 h and its water transmission rate was then 0.05 mmolmm -2 s -1 . Differences in water absorption were related to plasticizer solubility and material structure.
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corn protein based Thermoplastic Resins effect of some polar and amphiphilic plasticizers
Journal of Agricultural and Food Chemistry, 1999Co-Authors: L Di Gioia, Stephane GuilbertAbstract:Homogeneous blends of corn gluten meal (CGM) and “polar” plasticizers (water, glycerol) or “amphiphilic” plasticizers [octanoic and palmitic acids, dibutyl tartrate and phthalate, and diacetyl tartaric acid ester of mono-diglycerides (DATEM)] were obtained by a hot-mixing procedure. The glass transition temperature (Tg) of the blends was measured by modulated differential scanning calorimetry and dynamic mechanical thermal analysis, as a function of plasticizer type and content (0−30%, dwb). The plasticizing efficiency (i.e., decrease of Tg) at equal molar content was found to be proportional to the molecular weight and inversely proportional to the percent of hydrophilic groups of the plasticizer. The migration rate of the plasticizers in the polymer was related to their physicochemical characteristics. It was assumed that polar substances interacted with readily accessible polar amino acids, whereas amphiphilic ones interacted with nonpolar zones, which are buried and accessible with difficulty. The tem...
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corn protein based Thermoplastic Resins effect of some polar and amphiphilic plasticizers
Journal of Agricultural and Food Chemistry, 1999Co-Authors: L Di Gioia, Stephane GuilbertAbstract:Homogeneous blends of corn gluten meal (CGM) and "polar" plasticizers (water, glycerol) or "amphiphilic" plasticizers [octanoic and palmitic acids, dibutyl tartrate and phthalate, and diacetyl tartaric acid ester of mono-diglycerides (DATEM)] were obtained by a hot-mixing procedure. The glass transition temperature (T(g)) of the blends was measured by modulated differential scanning calorimetry and dynamic mechanical thermal analysis, as a function of plasticizer type and content (0-30%, dwb). The plasticizing efficiency (i.e., decrease of T(g)) at equal molar content was found to be proportional to the molecular weight and inversely proportional to the percent of hydrophilic groups of the plasticizer. The migration rate of the plasticizers in the polymer was related to their physicochemical characteristics. It was assumed that polar substances interacted with readily accessible polar amino acids, whereas amphiphilic ones interacted with nonpolar zones, which are buried and accessible with difficulty. The temperature at which a Thermoplastic resin of plasticized CGM could be formed was closely connected to the T(g) of the blend.
L Di Gioia - One of the best experts on this subject based on the ideXlab platform.
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corn protein based Thermoplastic Resins effect of some polar and amphiphilic plasticizers
Journal of Agricultural and Food Chemistry, 1999Co-Authors: L Di Gioia, Stephane GuilbertAbstract:Homogeneous blends of corn gluten meal (CGM) and “polar” plasticizers (water, glycerol) or “amphiphilic” plasticizers [octanoic and palmitic acids, dibutyl tartrate and phthalate, and diacetyl tartaric acid ester of mono-diglycerides (DATEM)] were obtained by a hot-mixing procedure. The glass transition temperature (Tg) of the blends was measured by modulated differential scanning calorimetry and dynamic mechanical thermal analysis, as a function of plasticizer type and content (0−30%, dwb). The plasticizing efficiency (i.e., decrease of Tg) at equal molar content was found to be proportional to the molecular weight and inversely proportional to the percent of hydrophilic groups of the plasticizer. The migration rate of the plasticizers in the polymer was related to their physicochemical characteristics. It was assumed that polar substances interacted with readily accessible polar amino acids, whereas amphiphilic ones interacted with nonpolar zones, which are buried and accessible with difficulty. The tem...
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corn protein based Thermoplastic Resins effect of some polar and amphiphilic plasticizers
Journal of Agricultural and Food Chemistry, 1999Co-Authors: L Di Gioia, Stephane GuilbertAbstract:Homogeneous blends of corn gluten meal (CGM) and "polar" plasticizers (water, glycerol) or "amphiphilic" plasticizers [octanoic and palmitic acids, dibutyl tartrate and phthalate, and diacetyl tartaric acid ester of mono-diglycerides (DATEM)] were obtained by a hot-mixing procedure. The glass transition temperature (T(g)) of the blends was measured by modulated differential scanning calorimetry and dynamic mechanical thermal analysis, as a function of plasticizer type and content (0-30%, dwb). The plasticizing efficiency (i.e., decrease of T(g)) at equal molar content was found to be proportional to the molecular weight and inversely proportional to the percent of hydrophilic groups of the plasticizer. The migration rate of the plasticizers in the polymer was related to their physicochemical characteristics. It was assumed that polar substances interacted with readily accessible polar amino acids, whereas amphiphilic ones interacted with nonpolar zones, which are buried and accessible with difficulty. The temperature at which a Thermoplastic resin of plasticized CGM could be formed was closely connected to the T(g) of the blend.
Yasuhiro Tanabe - One of the best experts on this subject based on the ideXlab platform.
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controlling of the interfacial shear strength between Thermoplastic resin and carbon fiber by adsorbing polymer particles on carbon fiber using electrophoresis
Composites Part A-applied Science and Manufacturing, 2016Co-Authors: Tetsuya Yamamoto, Katsumasa Uematsu, Toshihira Irisawa, Yasuhiro TanabeAbstract:Abstract In order to control the interfacial adhesion between carbon fibers and Thermoplastic Resins, poly(methyl methacrylate) (PMMA) particles have been adsorbed on the carbon fiber surfaces using an electrophoresis process. The amount of PMMA particles adsorbed on the modified carbon fibers was varied using the electrophoresis technique performed in polymer colloids for a short time. Additionally, the interfacial shear strength between the modified carbon fiber and the resin was controlled by a modification of the present process. An improved interaction and a strengthened surface adhesion between the carbon fiber coated with particles and the PMMA resin were observed.
Tetsuya Yamamoto - One of the best experts on this subject based on the ideXlab platform.
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controlling of the interfacial shear strength between Thermoplastic resin and carbon fiber by adsorbing polymer particles on carbon fiber using electrophoresis
Composites Part A-applied Science and Manufacturing, 2016Co-Authors: Tetsuya Yamamoto, Katsumasa Uematsu, Toshihira Irisawa, Yasuhiro TanabeAbstract:Abstract In order to control the interfacial adhesion between carbon fibers and Thermoplastic Resins, poly(methyl methacrylate) (PMMA) particles have been adsorbed on the carbon fiber surfaces using an electrophoresis process. The amount of PMMA particles adsorbed on the modified carbon fibers was varied using the electrophoresis technique performed in polymer colloids for a short time. Additionally, the interfacial shear strength between the modified carbon fiber and the resin was controlled by a modification of the present process. An improved interaction and a strengthened surface adhesion between the carbon fiber coated with particles and the PMMA resin were observed.
Toshihira Irisawa - One of the best experts on this subject based on the ideXlab platform.
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controlling of the interfacial shear strength between Thermoplastic resin and carbon fiber by adsorbing polymer particles on carbon fiber using electrophoresis
Composites Part A-applied Science and Manufacturing, 2016Co-Authors: Tetsuya Yamamoto, Katsumasa Uematsu, Toshihira Irisawa, Yasuhiro TanabeAbstract:Abstract In order to control the interfacial adhesion between carbon fibers and Thermoplastic Resins, poly(methyl methacrylate) (PMMA) particles have been adsorbed on the carbon fiber surfaces using an electrophoresis process. The amount of PMMA particles adsorbed on the modified carbon fibers was varied using the electrophoresis technique performed in polymer colloids for a short time. Additionally, the interfacial shear strength between the modified carbon fiber and the resin was controlled by a modification of the present process. An improved interaction and a strengthened surface adhesion between the carbon fiber coated with particles and the PMMA resin were observed.
