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

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

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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.

Poly(butylene adipate-co-terephthalate)Dynamic crosslinked networksChain breaking-crosslinking strategyUpcycleRecycle

Bin-Bo Wang、Rong Huang、Xin Wang、Tao Jiang、Yi Wang、Shuai Du、Fa-Lin Li、Jin Zhu、Song-Qi Ma

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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

Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi,214122,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaI nnovative Leading Talent of Taihu Lake Talent Plan in Wuxi CityZhejiang Ten Thousand Talent ProgramResearch startup fund from Jiangnan University

5237300752073296

2024

10.1007/s10118-024-3179-4

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)

CSTPCD
影响因子：0.721
ISSN：0256-7679
年,卷(期)：2024.42(10)