Fabrication of cellulose/plant oil based flexible epoxy thermoset with excellent UV-blocking performance

编号 020038102

推送时间 20230206

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Fabrication of cellulose/plant oil based flexible epoxy thermoset with excellent UV-blocking performance

来源期刊 JOURNAL OF POLYMER SCIENCE

期 第381期

发表时间 20221203

关键词 cellulose;  flexible epoxy thermoset;  plant oil;  UV absorption; 

摘要 Flexible epoxy thermosets have promising applications in modern industry. However, the development of next-generation flexible epoxy thermosets with high biomass content and multi-functions remains challenging. In this work, a sustainable cellulose/plant oil based flexible epoxy thermoset with excellent mechanical property, reprocessing performance, and UV absorption property was prepared. First, the amino cellulose is synthesized and used as a reinforcement and curing agent, and then the flexible epoxy thermoset is prepared by curing reaction of amino cellulose, citric acid, and flexible epoxy resin using zinc acetylacetonate as the transesterification catalyst. The epoxy thermosets show excellent thermal stability, the temperature at maximum weight loss reached 425 degrees C. Mechanical property tests indicate that these thermosets have high mechanical strength (19.6 MPa) and satisfactory stretchability (36.1%-118%). The dynamic transesterification ester groups endow the epoxy thermoset with reprocessing ability. In addition, these epoxy thermosets show outstanding and stable UV absorption properties even after long-time UV-light irradiation or heating treatment, which makes these flexible epoxy thermosets have promising applications in UV-blocking coating.

服务人员 尚玮姣

服务院士 宋湛谦

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