聚己二酸丁二醇酯的制备与表征  

Preparation and Characterization of Poly(butylene adipate)

作　　者：杨代兰 杨震 李梓媛 袁明龙 李袁帅 袁明伟 YANG Dailan;YANG Zhen;LI Ziyuan;YUAN Minglong;LI Yuanshuai;YUAN Mingwei(School of Chemistry and Environment,Yunnan Minzu University,National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,Kunming 650500,China;The first middle school of Hongan County,Huanggang 438400,China)

机构地区：[1]云南民族大学化学与环境学院,生物基材料绿色制备技术国家地方联合工程研究中心,云南昆明650500 [2]湖北省红安县第一中学,湖北黄冈438400

出　　处：《塑料工业》2024年第3期34-40,共7页China Plastics Industry

基　　金：国家自然科学基金项目(52163013)。

摘　　要：在180~200℃、质量分数为0.2%的钛酸四丁酯催化剂的条件下,1,6-己二酸和1,4-丁二醇(酸/醇物质的量比为1∶1.05、1∶1.10、1∶1.15、1∶1.20、1∶1.25)通过酯化、缩聚合成以羟基封端的、生物降解的聚己二酸丁二醇酯(PBA),同时比较不同酸/醇物质的量比合成的PBA性能,筛选出合成PBA的最佳酸/醇物质的量比。结果表明,酸/醇物质的量比为1∶1.05时,PBA的分子量(31884)最高,产物具有一定的韧性、更优异的拉伸性能和较高的薄膜平整度,拉伸强度为15.81 MPa,断裂伸长率高达824.62%;5个酸/醇物质的量比条件下制备的PBA的热分解温度均在350℃以上,产物具有较好的热稳定性。该合成方法的装置简单、聚合时间相对较短,且实验条件易于实现。Under the tetrabutyl titanate catalyst with a mass fraction of 0.2%and at 180-200℃,hydroxy-terminated biodegradable poly(butylene adipate)(PBA)was synthesized by the esterification and polycondensation of 1,6 adipic acid and 1,4-butanediol,with the molar ratios of 1,6 adipic acid and 1,4-butanediol are 1∶1.05,1∶1.10,1∶1.15,1∶1.20,1∶1.25.The properties of PBA synthesized by different molar ratios of acid to alcohol were compared,and the best molar ratio of acid to alcohol was selected for PBA synthesis.The results show that when the molar ratio of acid to alcohol is 1∶1.05,PBA has the highest molecular weight(31884).The product has certain toughness,better mechanical properties and higher flatness.Its tensile strength is 15.81 MPa and its elongation at break is 824.62%.The heat decomposition temperatures of all the samples are above 350℃,the products have good thermal stability.The synthesis devices are simple,the polymerization time is relatively short,and the experimental conditions are easy to realize.

关 键 词：聚己二酸丁二醇酯 生物降解 脂肪族聚酯 热稳定性 拉伸性能 

分 类 号：TQ323.43[化学工程—合成树脂塑料工业]