The Experts below are selected from a list of 7635 Experts worldwide ranked by ideXlab platform
Xinsheng Chai - One of the best experts on this subject based on the ideXlab platform.
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a volatile tracer assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer's Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD<2.1%) and good accuracy, in which the relative deference between the data measured by the HS-GC method and the reference method were within 8.0%. The present method is very suitable to be used for testing the Swelling Capacity of polymers at the elevated temperatures.
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A volatile tracer-assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:Abstract This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer’s Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD
Jian Peng - One of the best experts on this subject based on the ideXlab platform.
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effects of dietary fibers with high water binding Capacity and Swelling Capacity on gastrointestinal functions food intake and body weight in male rats
Food & Nutrition Research, 2017Co-Authors: Xichen Zhao, Chuanhui Xu, Jian PengAbstract:ABSTRACTObjective: The aim of this study was to investigate the effects of supplementation of dietary soluble fibers with high water-binding Capacity (WBC) and Swelling Capacity (SC) on gastrointestinal tract mass, physicochemical properties of digesta, gastrointestinal mean retention time (MRT), body weight, and food intake in male rats.Methods: Thirty-two male Sprague-Dawley rats were randomized to four equal groups and fed the control diet or diet containing 2% konjac flour (KF), pregelatinized waxy maize starch plus guar gum (PWMS+GG), andPWMS plus xanthan gum (PWMS+XG) for three weeks.Results: WBC and SC of diets followed the order of PWMS+GG > KF > PWMS + XG > control. PWMS+GG and KF groups had a lower average daily food intake than the control group, but all the groups showed no difference in final body weightand the weight gain rate. The high WBC and SC of the PWMS+GG and KF groupsled to an increase of WBC and SC in the stomach digesta, and a gain of the cecal digesta weight, due to increased ceca...
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soluble fiber with high water binding Capacity Swelling Capacity and fermentability reduces food intake by promoting satiety rather than satiation in rats
Nutrients, 2016Co-Authors: Xichen Zhao, Chuanhui Xu, Yuanfei Zhou, Jian PengAbstract:To understand whether soluble fiber (SF) with high water-binding Capacity (WBC), Swelling Capacity (SC) and fermentability reduces food intake and whether it does so by promoting satiety or satiation or both, we investigated the effects of different SFs with these properties on the food intake in rats. Thirty-two male Sprague-Dawley rats were randomized to four equal groups and fed the control diet or diet containing 2% konjac flour (KF), pregelatinized waxy maize starch (PWMS) plus guar gum (PG), and PWMS starch plus xanthan gum (PX) for three weeks, with the measured values of SF, WBC, and SC in the four diets following the order of PG > KF > PX > control. Food intake, body weight, meal pattern, behavioral satiety sequence, and short-chain fatty acids (SCFAs) in cecal content were evaluated. KF and PG groups reduced the food intake, mainly due to the decreased feeding behavior and increased satiety, as indicated by decreased meal numbers and increased inter-meal intervals. Additionally, KF and PG groups increased concentrations of acetate acid, propionate acid, and SCFAs in the cecal contents. Our results indicate that SF with high WBC, SC, and fermentability reduces food intake—probably by promoting a feeling of satiety in rats to decrease their feeding behavior.
Shuxin Zhang - One of the best experts on this subject based on the ideXlab platform.
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a volatile tracer assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer's Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD<2.1%) and good accuracy, in which the relative deference between the data measured by the HS-GC method and the reference method were within 8.0%. The present method is very suitable to be used for testing the Swelling Capacity of polymers at the elevated temperatures.
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A volatile tracer-assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:Abstract This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer’s Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD
Arpit Sand - One of the best experts on this subject based on the ideXlab platform.
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graft copolymer based on sodium alginate g acrylamide characterization and study of water Swelling Capacity metal ion sorption flocculation and resistance to biodegradability
International Journal of Biological Macromolecules, 2016Co-Authors: Arpit Sand, Aparna Vyas, A K GuptaAbstract:Graft copolymer of alginate and acrylamide was synthesized by grafting acrylamide chains on to alginate by free radical polymerization using potassium bromate/thiourea redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables, including the concentration of acrylamide (3.0×10(2)-9.3×10(2)moldm(-3)), potassium bromate (8×10(-3)-16×10(-3)moldm(-3)), thiourea (1.6×10(-3)-4.8×10(-3)moldm(-3)), sulphuric acid (3.0×10(-3)-7×10(-3)moldm(-3)), alginate (0.6-1.6gdm(-3)) along with time duration (60-180min) and temperature (30-50°C). Water Swelling Capacity, metal ion sorption, flocculation and resistance to biodegradability studies of synthesized graft copolymer have been performed with respect to the parent polymer. The grafted polymers were characterized by FTIR spectroscopy and thermo gravimetric analysis.
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modification of alginate through the grafting of 2 acrylamidoglycolic acid and study of physicochemical properties in terms of Swelling Capacity metal ion sorption flocculation and biodegradability
Carbohydrate Polymers, 2011Co-Authors: Mithilesh Yadav, Arpit Sand, Dinesh Kumar Mishra, Kunj BehariAbstract:Abstract The present paper reports the modification of alginate through the grafting of 2-acrylamidoglycolic acid by free radical polymerization using an efficient potassium peroxydiphosphate/silver nitrate redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables including the concentration of 2-acrylamidoglycolic acid (2.0 × 10 −2 –7.3 × 10 −2 mol dm −3 ), potassium peroxydiphosphate (0.4 × 10 −2 –2.0 × 10 −2 mol dm −3 ), silver nitrate (1.2 × 10 −3 –4.4 × 10 −3 mol dm −3 ), sulphuric acid (1.0 × 10 −3 –8 × 10 −3 mol dm −3 ), alginate (0.4–1.8 g dm −3 ) along with time duration (60–180 min) and temperature (30–50 °C). Water Swelling Capacity, metal ion sorption, flocculation and resistance to biodegradability studies of synthesized graft copolymer have been performed with respect to the parent polymer. The graft copolymer has been characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis.
Ran Jiang - One of the best experts on this subject based on the ideXlab platform.
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a volatile tracer assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer's Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD<2.1%) and good accuracy, in which the relative deference between the data measured by the HS-GC method and the reference method were within 8.0%. The present method is very suitable to be used for testing the Swelling Capacity of polymers at the elevated temperatures.
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A volatile tracer-assisted headspace analytical technique for determining the Swelling Capacity of superabsorbent polymers
Journal of Chromatography A, 2017Co-Authors: Shuxin Zhang, Ran Jiang, Xinsheng ChaiAbstract:Abstract This paper reports on a new method for the determination of Swelling Capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers Swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer’s Swelling Capacity, a transition point (corresponding to the material Swelling Capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD
