己二酸-1,4-丁二醇-尿素共聚物的合成与表征  

Synthesis,characterization of adipic acid-1,4-butanediol-urea copolymer

作　　者：刘跃军[1] 谢伟[1] 刘亦武[1] 刘磅[1] 

机构地区：[1]湖南工业大学包装新材料与技术重点实验室,湖南株洲412007

出　　处：《功能材料》2012年第16期2176-2180,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(10972076);湖南省科研条件创新专项重点资助项目(2010TT1003);湖南省高校创新平台开放基金资助项目(10K019)

摘　　要：以己二酸、1,4-丁二醇和尿素为原料,在氩气环境下,通过高温熔融缩聚反应合成了一种新型可降解的己二酸-丁二醇-尿素共聚物,并对反应时间、催化剂种类及其用量、原料配比、反应温度等因素对聚合产物的影响进行了研究。采用红外光谱(FT-IR)、核磁共振(1H-NMR)、凝胶渗透色谱(GPC)、热重分析(TG)、差示量热扫描(DSC)对产物的结构与性能进行了表征。结果表明,当丁二醇和尿素的总量与己二酸(n(丁二醇+尿素)∶n(己二酸))的摩尔比为1.16∶1,丁二醇和尿素(n(1,4-丁二醇)∶n(尿素))的摩尔比为5∶1,最高反应温度为220℃,二月桂酸二丁基锡为催化剂且用量为原料总量的0.03%,总反应时间10h,所得到产物的重均分子量(Mw)可达12700,其颜色、热稳定性和降解性能等较好。A novel adipic acid copolymer was synthesized via condensation polymerization with adipic acid, urea and, 1,4-butanediol as the raw materials. The influences of reaction time, catalyst, mass ratio of raw materials and the temperature on the property of copolymer were investigated. The structure, thermodynamic perform- ance and the molecular weights of the eopolymer were characterized by fourier transform infrared （FT-IR）, 1 H- NMR spectrum, gel permeation chromatography （GPG） and thermogravimeter-differential scanning calorimeter （TG-DSC） respectively. The results show that under the condition of 220℃, 10h, the optimal feed molar ratios n （1,4-butanediol and urea）/n （adipic acid） == 1.16 ： 1, n （adipie acid）/n （urea） = 5 ： 1, the amount of catalyst was 0.03wt %）, a desired adipic acid copolymer whose weight-average molecular weight reaches 12700 could be obtained. The prepared copolymer has higher thermostability, degradability and good appearance.

关 键 词：己二酸 1 4-丁二醇 尿素 缩聚 降解 

分 类 号：TB34[一般工业技术—材料科学与工程]