石油化工2025，Vol.54Issue(11)：1572-1580,9.DOI:10.3969/j.issn.1000-8144.2025.11.004
基于Diels-Alder反应制备聚丁二酸丁二醇酯扩链聚合物
Preparation of polybutylene succinate extended-chain polymers via Diels-Alder reaction
刘欣 1李澜鹏 2白富栋 2张雷 2孙启梅 2牛慧1
作者信息
- 1. 大连理工大学 化工学院 高分子材料系,辽宁 大连 116024
- 2. 中石化(大连)石油化工研究院有限公司,辽宁 大连 116045
- 折叠
摘要
Abstract
The furan-functionalized styrene(SF)side groups were introduced into polybutylene succinate(PBS)through melt grafting.Subsequently,bismaleimide small molecules were used as chain extenders to achieve chain extension of PBS via thermally reversible Diels-Alder reaction.The structure and properties of the chain-extended PBS were investigated using 1H NMR,DSC,and mechanical property tests.The experimental results show that the degree of chain extension of PBS can be controlled by adjusting the concentration of grafting monomer,the concentration of radical initiator,and the structure and concentration of small molecule chain extenders.When the grafting amount of SF reaches 0.44%(x),there are an average of 1.1 furan side groups per PBS molecular chain,theoretically resulting in a branched polymer.In PBS-5-3 with the highest SF grafting amount,the average number of furan side groups per PBS molecular chain is 2.8,theoretically yielding a lightly crosslinked polymer.The intrinsic viscosity of the chain-extended PBS increases,but it still maintains comparable melt processing properties to the unextended PBS.Meanwhile,it exhibits higher crystallization temperature,fracture strength,and elongation at break,and is degradable under the action of lipase.关键词
聚丁二酸丁二醇酯/Diels-Alder反应/扩链反应Key words
polybutylene succinate/Diels-Alder reaction/chain extension reaction分类
化学化工引用本文复制引用
刘欣,李澜鹏,白富栋,张雷,孙启梅,牛慧..基于Diels-Alder反应制备聚丁二酸丁二醇酯扩链聚合物[J].石油化工,2025,54(11):1572-1580,9.
