文献类型：期刊文献

英文题名：Thermal, Kinetic, and Mechanical Properties of Glycerol-Plasticized Wheat Gluten

作者：Pan, Yongkang[1];Wang, Xuehong[1];Yuan, Qiaolong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2011

卷号：121

期号：2

起止页码：797

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20111513901498);WOS:【SCI-EXPANDED(收录号:WOS:000289355500025)】；

基金：Contract grant sponsor: Shanghai-Unilever Research and Development Fund; contract grant number: 2005008.Contract grant sponsor: Shanghai Leading Academic Discipline Project No. B502.

语种：英文

外文关键词：glycerol-plasticized wheat gluten; rotorless curemeter; activation energy; reaction rate

摘要：Glycerol-plasticized wheat gluten was prepared by mixing in an internal mixer equipped with sigma rotors, and then thermally compression-molded to form a sheet for crosslinking and tensile tests. Referring to rubber vulcanization process, rotorless curemeter was applied to test the vulcanization characteristic parameters of the molded round samples, which could be used to calculate the activation energy and reaction rate of crosslinking occurring in wheat gluten when heated. Vulcanizing curves obtained show that the optimum temperature for processing glycerol-plasticized wheat gluten is 150 degrees C, and that activation energy and reaction rate of crosslinking in wheat gluten plasticized with 20 wt % glycerol reach minimum and maximum values, respectively. In addition, glycerol content, plasticizing time, and temperature have significant effects on the mechanical properties of thermomolded wheat gluten plastics. The factors are closely related to the establishment of a covalent network resulting from the formation and rearrangement of disulfide bridges in wheat gluten. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 797-804, 2011