Flexible,thermal processable,self-healing,and fully bio-based starch plastics by constructing dynamic imine network  

作　　者：Xiaoqian Zhang Haishan Zhang Guowen Zhou Zhiping Su Xiaohui Wang 

机构地区：[1]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,510640,China

出　　处：《Green Energy & Environment》2024年第10期1610-1618,共9页绿色能源与环境（英文版）

基　　金：supported by the National Natural Science Foundation of China(U23A6005 and 32171721);State Key Laboratory of Pulp and Paper Engineering(202305,2023ZD01,2023C02);Guangdong Province Basic and Application Basic Research Fund(2023B1515040013);the Fundamental Research Funds for the Central Universities(2023ZYGXZR045).

摘　　要：The serious environmental threat caused by petroleum-based plastics has spurred more researches in developing substitutes from renewable sources.Starch is desirable for fabricating bioplastic due to its abundance and renewable nature.However,limitations such as brittleness,hydrophilicity,and thermal properties restrict its widespread application.To overcome these issues,covalent adaptable network was constructed to fabricate a fully bio-based starch plastic with multiple advantages via Schiff base reactions.This strategy endowed starch plastic with excellent thermal processability,as evidenced by a low glass transition temperature(T_(g)=20.15℃).Through introducing Priamine with long carbon chains,the starch plastic demonstrated superior flexibility(elongation at break=45.2%)and waterproof capability(water contact angle=109.2°).Besides,it possessed a good thermal stability and self-adaptability,as well as solvent resistance and chemical degradability.This work provides a promising method to fabricate fully bio-based plastics as alternative to petroleum-based plastics.

关 键 词：Bioplastic Covalent adaptable networks Schiff base chemistry Thermal processability SELF-HEALING 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]