首页|聚己二酸丁二醇酯的制备与表征

聚己二酸丁二醇酯的制备与表征

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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(31 884)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.
Preparation and Characterization of Poly(butylene adipate)
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(31 884).The product has certain toughness,better mechanical properties and higher flatness.Its tensile strength is 15.81 MPa and its elongation at break is824.62%.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.

Poly(Butylene Adipate)Bio-degradableAliphatic PolyesterThermal StabilityTensile Property

杨代兰、杨震、李梓媛、袁明龙、李袁帅、袁明伟

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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

湖北省红安县第一中学, 湖北 黄冈 438400

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

国家自然科学基金云南省"千人计划"培养项目

52163013YNQR-CYRC-2018-012

2024

塑料工业
中蓝晨光化工研究院有限公司

塑料工业

CSTPCD北大核心
影响因子:0.685
ISSN:1005-5770
年,卷(期):2024.52(3)
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