Upcycling of Poly(butylene adipate-co-terephthalate)into Dual Covalent Adaptable Networks through Chain Breaking-Crosslinking Strategy

Bin-Bo Wang ¹Rong Huang ²Xin Wang ²Tao Jiang ²Yi Wang ²Shuai Du ²Fa-Lin Li ²Jin Zhu ³Song-Qi Ma²

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作者信息

1. Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China;Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province,Divisions of Polymers and Composites,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo315201,China;University of Chinese Academy of Sciences,Beijing 100049,China
2. Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi,214122,China
3. Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province,Divisions of Polymers and Composites,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo315201,China
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Abstract

Poly(butylene adipate-co-terephthalate)(PBAT),a widely studied biodegradable material,has not effectively addressed the problem of plastic waste.Taking into consideration the cost-effectiveness,upcycling PBAT should take precedence over direct composting degradation.The present work adopts a chain breaking-crosslinking strategy,upcycling PBAT into dual covalent adaptable networks(CANs).During the chain-breaking stage,the ammonolysis between PBAT and polyethyleneimine(PEI)established the primary crosslinked network.Subsequently,styrene maleic anhydride copolymer(SMA)reacted with the hydroxyl group,culminating in the formation of dual covalent adaptable networks.In con-trast to PBAT,the PBAT-dual-CANs exhibited a notable Young's modulus of 239 MPa,alongside an inherent resistance to creep and solvents.Ow-ing to catalysis from neighboring carboxyl group and excess hydroxyl groups,the PBAT-dual-CANs exhibited fast stress relaxation.Additionally,they could be recycled through extrusion and hot-press reprocessing,while retaining their biodegradability.This straightforward strategy offers a solution for dealing with plastic waste.

Key words

Poly(butylene adipate-co-terephthalate)/Dynamic crosslinked networks/Chain breaking-crosslinking strategy/Upcycle/Recycle

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基金项目

National Natural Science Foundation of China(52373007)

National Natural Science Foundation of China(52073296)

I nnovative Leading Talent of Taihu Lake Talent Plan in Wuxi City()

Zhejiang Ten Thousand Talent Program()

Research startup fund from Jiangnan University()

出版年

2024

高分子科学(英文版)

中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCDCSCD

影响因子：0.721

ISSN：0256-7679

参考文献量32

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