“Solid-Liquid” Vitrimers Based on Dynamic Boronic Ester Networks

编号 020031804

推送时间 20211122

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 “Solid-Liquid” Vitrimers Based on Dynamic Boronic Ester Networks

来源期刊 Chinese Journal of POLYMER SCIENCE

期 第318期

发表时间 20210725

关键词 Solid-liquid;  Dynamic covalent bond;  Boronic ester bond;  Strain-rate dependent;  High stretchability; 

摘要 The “solid-liquid” behavior of vitrimers have not been systematically investigated. Herein, a series of “solid-liquid” vitrimers bearing varying contents of dynamic boronic ester bonds were synthesized?via?thiol-ene click reactions. These vitrimers allow for flexibile modulation of their network structures and thus show a range of intriguing properties including high stretchability, flexible transition from elasticity to plasticity, strong strain rate dependence, and solid-liquid performance. The dynamic association rate of boronic ester bonds within these vitrimers could be apparently accelerated?via?increasing the content of boronic ester, which could be used to shape-program the flat vitrimer films into various complex 3D structures just with external force. Materials with such versatile dynamic behavior may open up a range of new applications.

服务人员 尚玮姣

服务院士 宋湛谦

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