Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins
Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins
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DOI：
10.1016/j.indcrop.2013.12.045
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发表时间：
2014-02-01
影响因子：
5.9
通讯作者：
Fulcrand, Helene
中科院分区：
文献类型：
--
作者：
Benyahya, Sofia;Aouf, Chahinez;Fulcrand, Helene
从绿色茶叶中提取的酚类物质用于制备热固性环氧树脂。以市售绿色茶提取物（GTE）为原料，在相转移催化剂存在下，与环氧氯丙烷反应，使其功能化。将以良好收率获得的绿色茶提取物的缩水甘油醚衍生物（GEGTE）在环氧聚合物中与异佛尔酮二胺（IPD）固化，并将所得网络与儿茶素-IPD和双酚A的二缩水甘油醚（DGEBA-IPD）体系进行比较。这种生物基环氧聚合物的热分析和机械分析表明，其具有高反应性、高交联密度（T-g：140-190摄氏度）、高耐热性和有趣的机械性能。(C)2014爱思唯尔有限公司版权所有。
Phenolic extract from the green tea leaves was used for the production of thermoset epoxy resins. The commercial green tea extract (GTE) was functionalized by the reaction with epichlorohydrin in the presence of phase transfer catalyst. The glycidyl ether derivative of the green tea extract (GEGTE) obtained with a good yield was cured in epoxy polymer with isophorone diamine (IPD) and the resulting network was compared to catechin-IPD and diglycidyl ether of bisphenol A (DGEBA-IPD) systems. The thermal and mechanical analyses of this bio-based epoxy polymer showed its high reactivity associated with a high crosslinking density (T-g: 140-190 degrees C), a high thermal resistance and interesting mechanical properties. (C) 2014 Elsevier B.V. All rights reserved.