氯乙烯
材料科学
增塑剂
单体
共聚物
氯
高分子化学
聚合
复合材料
聚氯乙烯
化学工程
聚合物
工程类
冶金
作者
Patrick W. Skelly,Longbo Li,Rebecca Braslau
标识
DOI:10.1080/15583724.2021.1986066
摘要
Polyvinyl Chloride (PVC) is among the most abundant plastics worldwide. Phthalates and other plasticizers—small molecules added to PVC to impart flexibility—have raised numerous health concerns due to their tendency to migrate out of PVC, where they can be ingested or contaminate the environment. Internal plasticization, in which a plasticizer is covalently bound to the PVC backbone, offers a solution to the problem of plasticizer migration. This comprehensive review covers the preparation of internally plasticized PVC in the literature. Strategies fall into three main categories: nucleophilic substitution of chlorine atoms on PVC; graft polymerization using plasticizing monomers, usually from defect sites in the PVC backbone; and copolymerization of vinyl chloride with monomers bearing plasticizing species. Minimizing cost and number of synthetic steps are important considerations when designing plasticizers for this large-scale commodity plastic.
科研通智能强力驱动
Strongly Powered by AbleSci AI