Achieving higher performances without an external curing agent in natural magnolol-based epoxy resin  

作　　者：Qi Cao Zhihuan Weng Yu Qi Jiahui Li Wentao Liu Chengde Liu Shouhai Zhang Zhiyong Wei Yousi Chen Xigao Jian 

机构地区：[1]State Key Laboratory of Fine Chemicals,Liaoning High Performance Resin Engineering Research Center,Department of Polymer Science&Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Chinese Chemical Letters》2022年第4期2195-2199,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 51873027, 52073038 and 51673033);the Natural Science Foundation of Liaoning Province (No. 2019-ZD-0139);the Fundamental Research Funds for the Central Universities (No. DUT20TD114);the National Key Research and Development Program of China (No. 2017YFB0307600)。

摘　　要：Bio-based epoxy thermoset prepared from renewable biomass raw materials can alleviate fossil energy crisis and reduce environmental pollution,which satisfies the needs of sustainable social development.In this study,a bio-based epoxy thermoset precursor(MGOL-EP) was synthesized from a naturally occurring magnolol through a facile and efficient one-step process.And the fully bio-based epoxy thermoset(MGOL-EP-SC) was obtained by self-curing without adding any other hardener.MGOL-EP-SC revealed an extremely high glass-transition temperature(T_(g)) of 265℃ and char yield of 53.2%(in N;),which were at the highest level among the fully bio-based epoxy thermosets reported so far.In addition,when the MGOL-EP was cured with 4,4’-methylenedianiline(DDM),T_(g)of the MGOL-EP/DDM was decreased by 61℃ and the other comprehensive performance had also been decreased,which was due to a reduction in biphenyl structure content and cross-linking density by adding the external curing agents.Moreover,the MGOL-EP-SC presented certain killing rate(48.4%) to Staphylococcus aureus.These findings provide a new design strategy for engineering high-performance and functional epoxy thermoset with high biomass content.

关 键 词：Epoxy resin MAGNOLOL SELF-CURING Fully bio-based Antimicrobial properties 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]