基于2,5-呋喃二甲酸的三元无规共聚酯PBSF的制备与性能  

Synthesis and properties of ternary random copolyester PBSF based on 2,5-furandicarboxylic acid

作　　者：翟紫航 蒋杰 李锦锦 赵玲[1,2] 奚桢浩 ZHAI Zihang;JIANG Jie;LI Jinjin;ZHAO Ling;XI Zhenhao(State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Key Laboratory of Multiphase Materials Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学化工学院,化学工程联合国家重点实验室,上海200237 [2]华东理工大学化工学院,上海市多相结构材料化学工程重点实验室,上海200237

出　　处：《化工学报》2025年第2期868-878,共11页CIESC Journal

基　　金：国家自然科学基金项目(22308098,22278129);上海市优秀学术/技术带头人计划项目(21XD1433000);新疆维吾尔自治区重点研发计划项目(2022B01032)。

摘　　要：利用可再生资源制备新型生物基聚合物可减少对化石资源的依赖,是缓解能源与环境危机的有效手段。以2,5-呋喃二甲酸(FDCA)、丁二酸(SA)和1,4-丁二醇为共聚单体,钛酸四丁酯为催化剂,通过一锅法熔融缩聚制备了不同FDCA和SA比例的系列全生物基聚2,5-呋喃二甲酸-丁二酸-丁二醇酯(PBSF),探究了PBSF共聚酯的化学结构与组成对其热行为、结晶行为、热稳定性、力学性能、气体阻隔性能和亲水性等的影响。结果表明,随FDCA含量的增加,共聚酯的玻璃化转变温度从−23.6℃升高至38.6℃,杨氏模量先减小后增加,断裂伸长率先增加后减小,氧气阻隔性能先降低再升高,亲水性先增加后降低。当FDCA和SA比例接近时(44∶56),共聚酯表现出典型的热塑性弹性体特征。Using renewable resources to prepare new bio-based polymers can reduce dependence on fossil resources and is an effective means to alleviate the energy and environmental crisis.This work reported a series of fully bio-based poly(butylene succinate/2,5-furandicarboxylate)(PBSF)synthesized by one-pot melt polycondensation using 2,5-furandicarboxylic acid(FDCA),succinic acid(SA)and 1,4-butanediol(1,4-BD)as the comonomers and titanium(Ⅳ)butoxide as the catalyst.The effects of the chemical structures and compositions of the PBSF copolyesters on their thermal behavior,crystalline behavior,thermal stability,mechanical properties,gas barrier properties and hydrophilicity were systematically investigated.The results showed that as the FDCA molar content increased from 25%to 100%,the glass transition temperature(Tg)of the copolyester increased from-23.6℃to 38.6℃,the Youngs modulus decreased and then increased,the elongation at break increased and then decreased,the oxygen barrier property decreased and then increased,and the hydrophilicity increased and then decreased.When the molar ratio of FDCA to SA was 44∶56,the copolyester shows typical thermoplastic elastomer characteristics with low Tg value,high elongation at break and without yield point.It is expected that the results can provide valuable guide for the development of high-performance furan-based polyester.

关 键 词：生物质 2 5-呋喃二甲酸 聚合物 共聚酯 力学性能 阻隔性能 构效关系 

分 类 号：TQ324.1[化学工程—合成树脂塑料工业] TQ317