Hydrolysis and Solvolysis as Benign Routes for the End-of-Life Management of Thermoset Polymer Waste.

IF 7.6 2区 工程技术 Q1 CHEMISTRY, APPLIED
Minjie Shen, Hongda Cao, Megan L Robertson
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引用次数: 17

Abstract

The production of thermoset polymers is increasing globally owing to their advantageous properties, particularly when applied as composite materials. Though these materials are traditionally used in more durable, longer-lasting applications, ultimately, they become waste at the end of their usable lifetimes. Current recycling practices are not applicable to traditional thermoset waste, owing to their network structures and lack of processability. Recently, researchers have been developing thermoset polymers with the right functionalities to be chemically degraded under relatively benign conditions postuse, providing a route to future management of thermoset waste. This review presents thermosets containing hydrolytically or solvolytically cleavable bonds, such as esters and acetals. Hydrolysis and solvolysis mechanisms are discussed, and various factors that influence the degradation rates are examined. Degradable thermosets with impressive mechanical, thermal, and adhesion behavior are discussed, illustrating that the design of material end-of-life need not limit material performance.

水解和溶剂解是热固性聚合物废弃物报废处理的良性途径。
热固性聚合物由于其优越的性能,特别是作为复合材料应用时,其产量正在全球范围内增加。虽然这些材料传统上用于更耐用、更持久的应用,但最终,它们在使用寿命结束时就变成了废物。由于传统热固性废物的网状结构和缺乏可加工性,目前的回收做法不适用于传统热固性废物。最近,研究人员一直在开发具有正确功能的热固性聚合物,以便在使用后相对良性的条件下进行化学降解,为热固性废物的未来管理提供了一条途径。本文综述了含有水解或溶剂裂解键的热固性材料,如酯类和缩醛类。讨论了水解和溶剂溶解机理,并考察了影响降解速率的各种因素。具有令人印象深刻的机械,热和粘附性能的可降解热固性材料进行了讨论,说明材料的寿命结束的设计不需要限制材料的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Annual review of chemical and biomolecular engineering
Annual review of chemical and biomolecular engineering CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
16.00
自引率
0.00%
发文量
25
期刊介绍: The Annual Review of Chemical and Biomolecular Engineering aims to provide a perspective on the broad field of chemical (and related) engineering. The journal draws from disciplines as diverse as biology, physics, and engineering, with development of chemical products and processes as the unifying theme.
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