塑料科技2025，Vol.53Issue(11)：7-11,5.DOI:10.15925/j.cnki.issn1005-3360.2025.11.002
酸性离子液体催化合成生物基共聚酯PEHF
Synthesis of Bio-based Copolyester PEHF Catalyzed by Acidic Ionic Liquid
摘要
Abstract
The direct esterification melt copolymerization method was adopted,and the green and environmentally friendly acidic ionic liquid catalyst[(DA-2PS)(HSO4)2]was selected.By controlling the ratio of ethylene glycol(EG)to hexane-1,6-diol(HDO),2,5-furandicarboxylic acid(FDCA),EG,and HDO were copolymerized to prepare bio-based copolyesters PEHF.The effects of the composition and structure of the copolyesters on their thermal transition properties,elongation at break,and biodegradability were investigated.The results showed that the introduction of comonomers was beneficial to increase the intrinsic viscosity of the polyester and reduce the content of diethylene glycol 2,5-furandicarboxylate(DEGF)units.With the increase of 1,6-hexanediol 2,5-furandicarboxylate(HF)units,the glass transition temperature gradually decreased.Among them,PEHF-90 and poly(2,5-furandicarboxylate hexane-1,6-diol)(PHF)with HDO molar fractions of 90％and 100％,respectively,exhibited better crystallization properties.PEHF-30 with an HDO molar fraction of 30％had higher elongation at break,elastic modulus,and tensile strength,reaching 245.4％,1 075.0 MPa and 48.4 MPa,respectively.PEHF-70,PEHF-90,and PHF with HDO molar fractions of 70％had biodegradability,and the degradation rates of PEHF-90 and PHF were about 20％within 60 d.The research results provide new ideas for the development of biodegradable furan-based polyesters.关键词
离子液体/生物基/直接酯化法/聚2,5呋喃二甲酸乙二醇酯/共聚酯Key words
Ionic liquid/Bio-based/Direct esterification method/Poly(ethylene 2,5-furandicarboxylate)/Copolyester分类
化学化工引用本文复制引用
马恩庆,周俏,郭立颖..酸性离子液体催化合成生物基共聚酯PEHF[J].塑料科技,2025,53(11):7-11,5.基金项目
国家自然科学基金项目(22278271) （22278271）
辽宁省"揭榜挂帅"科技计划项目(2023JH1/10400062) （2023JH1/10400062）
