聚氧化乙烯降解行为的研究进展  

Research Progress on the Degradation Behavior of Poly(ethylene oxide)

作　　者：张嘉烙 周健 陈鹏[2] 谭成侠[1] ZHANG Jia-luo;ZHOU Jian;CHEN Peng;TAN Cheng-xia(Zhejiang University of Technology,Hangzhou 310014,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]浙江工业大学,杭州310014 [2]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《高分子通报》2025年第3期393-402,共10页Polymer Bulletin

摘　　要：聚氧化乙烯(PEO)是一种水溶性高分子,具有增稠、缓释、润滑、分散、保水等性能,被广泛应用于食品、医药、化工、能源电池等领域。然而,由于PEO分子链上醚氧键的键能较低,在加工和使用过程中易受外部因素的影响,导致键断裂,进而引发PEO分子量的下降,严重限制了PEO的加工条件以及最终产品的性能与使用寿命。本文基于目前对于PEO材料的性能要求,综述了近年国内外对于PEO降解的研究进展,重点介绍了目前PEO在热、辐照、机械应力和超声条件下的降解行为与机理。此外,还介绍了预防PEO降解的措施,结合案例讨论了各种措施的预防降解机制并对相关领域未来的发展方向进行了展望,为PEO的生产和加工提供了有益的参考。Poly(ethylene oxide)(PEO),as a water-soluble polymer with thickening,sustained releasing,lubrication,dispersion,water retention and other properties,is widely used in fields such as food,medicine,chemical industry,energy battery.However,due to the low bond energy of the ether-oxygen bond on the PEO molecular chain,whose breakage is easily led by the exposure of external factors during processing and use,which in turn results in the reduction of the molecular weight of PEO,thus severely limiting the processing conditions,as well as the performance and service life of the final product of PEO.Based on the current performance requirements of PEO materials,this paper reviews the current research progress on PEO degradation behavior and degradation mechanism under thermal,irradiation,mechanical stress and ultrasonic conditions.In addition,measures to prevent degradation of PEO are summaried,and the related mechanisms of various prevention measures based on successful cases are discussed.Finally,the future development direction of related fields is prospected.This review aims to provide a useful reference for the production and processing of PEO.

关 键 词：聚氧化乙烯 加工 降解 

分 类 号：O63[理学—高分子化学]