高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (7): 1611.doi: 10.7503/cjcu20170588

• 高分子化学 • 上一篇    

氯化镁/氯化1-丁基-3-甲基咪唑改性淀粉/聚丁二酸丁二醇酯共混材料的结构与性能

杨召杰, 雷蓓, 杜文浩, 张熙()   

  1. 高分子材料工程国家重点实验室, 四川大学高分子研究所, 成都 610065
  • 收稿日期:2017-08-31 出版日期:2018-07-10 发布日期:2018-06-05
  • 作者简介:联系人简介: 张 熙, 男, 博士, 教授, 博士生导师, 主要从事水溶性和功能高分子材料研究. E-mail: zhangxi6352@163.com
  • 基金资助:
    四川省应用基础研究项目(批准号: 17YYJC0702)资助.

Structure and Properties of Starch/Polybutylene Succinate Blends Modified by Magnesium Chloride/1-Butyl-3-methylimidazolium Chloride

YANG Zhaojie, LEI Bei, DU Wenhao, ZHANG Xi*()   

  1. State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University, Chengdu 610065, China
  • Received:2017-08-31 Online:2018-07-10 Published:2018-06-05
  • Contact: ZHANG Xi E-mail:zhangxi6352@163.com

摘要:

用氯化镁/氯化1-丁基-3-甲基咪唑([BMIM]Cl)复合增塑剂改性淀粉/聚丁二酸丁二醇酯(PBS)共混材料, 采用红外光谱(FTIR)、 扫描电子显微镜(SEM)、 差示扫描量热分析(DSC)、 X射线衍射分析(XRD)及力学性能测试等方法研究了氯化镁/[BMIM]Cl改性淀粉/PBS共混材料的结构和性能. 结果表明, 氯化镁能与淀粉及PBS形成较强的相互作用, 从而破坏淀粉及PBS原有的氢键, 导致淀粉/PBS共混体系结构和性能的改变. 与[BMIM]Cl改性体系相比, 氯化镁/[BMIM]Cl改性体系能进一步增强淀粉与PBS的界面结合力, 提高共混体系的相容性; 使淀粉/PBS的熔融焓、 结晶度及结晶温度降低, 冷结晶温度升高; 提高共混体系的力学强度和断裂伸长率, 抑制[BMIM]Cl因高效增塑产生的强度降低作用. 采用氯化镁/[BMIM]Cl改性淀粉/PBS可制备出具有良好力学性能的淀粉/PBS共混材料.

关键词: 聚丁二酸丁二醇酯, 改性淀粉, 离子液体, 氯化镁

Abstract:

The starch/poly(butylene succinate)(PBS) blends were modified by magnesium chloride/1-butyl-3-methylimidazolium chloride([BMIM]Cl) compound plasticizing agent. The structure and performance of magnesium chloride/[BMIM]Cl modified starch/PBS blends were studied by Fourier transform infrared spectroscopy(FTIR), scanning electron microscopy(SEM), differential scanning calorimetry(DSC) analysis, X-ray diffraction(XRD) and mechanical properties test. The research results showed that magnesium chloride could form strong interaction with starch and PBS to destroy the original hydrogen bond, which leaded to the structure and properties of starch/PBS blends change. Compared with the [BMIM]Cl modified system, the magnesium chloride/[BMIM]Cl modified system could further enhance the interfacial adhesion of starch to PBS and improve the compatibility of the blends. The melting enthalpy, crystallinity and the crystallization temperature of starch/PBS were decreased, and the cold crystallization temperature were increased. The mechanical strength and elongation at break of the blends were improved and the strength reduction due to high efficiency plasticization of [BMIM]Cl was inhibited. The starch/PBS blends with good mechanical properties could be prepared by magnesium chloride/[BMIM]Cl modified system.

Key words: Poly(butylene succinate), Modified starch, Ionic liquid, Magnesium chloride

中图分类号: 

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