含PBSu和PBAu链段可降解聚酯酰脲的合成及性能研究*

doi:10.11901/1005.3093.2015.577

材料研究学报

2016, Vol. 30

Issue (7): 553-560 DOI: 10.11901/1005.3093.2015.577

本期目录 | 过刊浏览

含PBSu和PBAu链段可降解聚酯酰脲的合成及性能研究*

戴红, 刘跃军(

), 谭海英, 崔玲娜, 杨伟

湖南工业大学包装新材料与技术重点实验室株洲 412007

Synthesis and Properties of Polyester Ureide Multiblock Copolymers Composed of Poly (butylene-succinate-uera) and Poly (adipate-succinate-uera)

DAI Hong, LIU Yuejun^**(

), TAN Haiying, CUI Lingna, YANG Wei

(Key Laboratory of New Materials and Technology for Packaging, HunanUniversity of Technology, Zhuzhou 412007, China)

引用本文:

戴红, 刘跃军, 谭海英, 崔玲娜, 杨伟. 含PBSu和PBAu链段可降解聚酯酰脲的合成及性能研究*[J]. 材料研究学报, 2016, 30(7): 553-560.
Hong DAI, Yuejun LIU, Haiying TAN, Lingna CUI, Wei YANG. Synthesis and Properties of Polyester Ureide Multiblock Copolymers Composed of Poly (butylene-succinate-uera) and Poly (adipate-succinate-uera)[J]. Chinese Journal of Materials Research, 2016, 30(7): 553-560.

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摘要:

以丁二酸-丁二醇-尿素(PBSu)聚酯酰脲共聚物与己二酸-丁二醇-尿素(PBAu)聚酯酰脲共聚物为预聚物, 甲苯-2, 4-二异氰酸酯(TDI)为扩链剂, 通过熔融共聚成功地制备了可降解聚酯酰脲嵌段共聚物(PBSu-co-PBAu)。采用核磁共振氢谱(¹H-NMR)、热重分析仪(TG)、差示扫描量热仪(DSC)、X射线衍射仪(XRD)、万能拉力试验机以及水降解测试表征了共聚物的结构与性能。研究发现, 随着PBAu含量的增加, 嵌段共聚物塑性提高。合成得到的嵌段共聚物具有优异的热稳定性能和良好的生物降解性能, 且具有比均聚物PBSu和PBAu以及未改性的聚酯PBS和PBA更好的拉伸性能。此外, 还可以通过改变PBSu和PBAu的进料比, 对材料的热性能、降解性能和力学性能进行一定范围的调节。

关键词 ：有机高分子材料, 嵌段共聚物, 扩链反应, 生物降解性能

Abstract：

A series of polyester ureidemultiblock copolymers (PBSu-co-PBAu) composed of the pre-prepared poly(butylene-succinate-urea) (PBSu) and poly(adipate-succinate-uera) (PBAu) were successfully synthesizedby melt polymerization processes with toluene-2, 4-diisocyanate(TDI) as a chain extender. Then the structure, thermal properties, mechanical properties and biodegradable properties of the copolymers were characterized by means of¹H-NMR, DSC, TG, XRD, universal tensile machine and hydrolytictest respectively. The results indicated that the toughness of multiblock copolymers was enhanced by the incorporation of PBAu. The multiblock copolymers possessed excellent thermal stability and biodegradable properties, as well as tensile properties superiorto the homopolymers PBSu and PBAu, the unmodified-PBS and -PBA. Besides, the thermal properties, biodegradability and mechanical properties of the multiblock copolymers can be adjusted by varying the dose of PBSu and PBAu.

Key words： organic polymer materials multiblock copolymers chain extension biodegradability

收稿日期: 2015-10-15

基金资助:* 国家自然科学基金11372108,湖南省自然科学基金14JJ5021和湖南省高校创新平台开放基金13K098资助

作者简介: To whom correspondence should be addressed, Tel: (0731)22183339, E-mail: yjliu_2005@126.com

本文联系人: 刘跃军, 教授

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图1 PBAu/PBA(A)和PBSu/PBS(B)的核磁氢谱图

图2 嵌段共聚物的核磁氢谱图

表1 嵌段共聚物和均聚物的组分含量

图3 共聚物的TG曲线

表2 共聚物的TG数据分析

图4 共聚物的DSC曲线(a)二次升温曲线, (b)降温曲线

表3 共聚物的DSC数据分析

图5 共聚物的XRD曲线

图6 共聚物的结晶度和拉伸强度的关系曲线(注: 图中X坐标轴上的数字表示聚酯酰脲嵌段共聚物中PBAu质量的百分含量/%)

表4 共聚物的拉伸性能

图7 共聚物的结晶度和失重率的关系曲线(注: 图中X坐标轴上的数字表示聚酯酰脲嵌段共聚物中PBAu质量的百分含量/%)

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