"Solid-Liquid" Vitrimers Based on Dynamic Boronic Ester Networks

• 作者: Sheng Wang Lu-Lu Xue Xiao-Zhuang Zhou Jia-Xi Cui
• 来源期刊: 高分子科学（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: ARTICLES
• 页码范围: 1292-1298
• 页数: 7页
• 语种: 英文

摘要

The "solid-liquid" behavior of vitrimers have not been systematically investigated.Herein,a series of "solid-liquid" vitrimers bearing vanying 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 fiat 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.