应用化学2025，Vol.42Issue(12)：1629-1635,7.DOI:10.19894/j.issn.1000-0518.250265
聚(L-丙交酯-对二氧环己酮)的合成与性能
Preparation and Properties of Poly(L-lactide-p-dioxocyclohexanone)
代书铭 1李佳岳 1程煜 2张坤玉 2马哲 1赵梓贺 2王彬1
作者信息
- 1. 天津大学材料与工程学院,天津 300350
- 2. 中国石油天然气股份有限公司石油化工研究院,北京 102206
- 折叠
摘要
Abstract
A multinuclear β-ketoimine zinc metal complex was used as a catalyst to catalyze the ring-opening copolymerization of levulinic acid ester(L-LA)and p-dioxocyclohexanone(PDO)into a series of polymers P(L-LA-co-PDO)with different ratios of compositions,and the thermal and mechanical properties of the polymers were investigated.The results showed that the polynuclear β-ketoimine zinc complex catalyst exhibited better catalytic activity than commercial stannous octoate.The relative molecular mass of the polymer obtained was above 200×103 and the relative molecular mass distribution was between 1.4 and 1.7.L-LA exhibited higher reactivity than PDO during copolymerization.The introduction of PDO units with different contents had a significant effect on the thermal and mechanical properties of the polymers.With the increase of PDO content,the polymer changed from crystalline state to amorphous state,and its toughness was greatly improved.Compared with traditional PLLA materials,the elongation at break was increased by 704%.This kind of chemical copolymerization is expected to broaden the application range of PLLA materials.关键词
聚乳酸/对二氧环己酮/多核β-酮亚胺锌金属配合物/开环共聚/增韧Key words
Polylactide/Dioxanone/β-Ketoimide zinc complexes/Ring-opening copolymerization/Toughening分类
化学化工引用本文复制引用
代书铭,李佳岳,程煜,张坤玉,马哲,赵梓贺,王彬..聚(L-丙交酯-对二氧环己酮)的合成与性能[J].应用化学,2025,42(12):1629-1635,7.
