高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (02): 400.doi: 10.3969/j.issn.0251-0790.2012.02.033

• 高分子化学 • 上一篇    下一篇

环氧基团功能化弹性体增韧聚乳酸的性能

冯玉林1,2, 殷敬华1, 姜伟1, 赵桂艳1   

  1. 1. 中国科学院长春应用化学研究所, 高分子化学与物理国家重点实验室, 长春 130022;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2011-03-17 出版日期:2012-02-10 发布日期:2012-01-13
  • 通讯作者: 姜 伟, 男, 博士, 研究员, 主要从事高分子结构与性能研究. E-mail: wjiang@ciac.jl.cn 赵桂艳, 女, 助理研究员, 主要从事高分子结构与性能研究. E-mail: gyzh@ciac.jl.cn E-mail:wjiang@ciac.jl.cn;gyzh@ciac.jl.cn
  • 基金资助:

    吉林省科技发展计划项目(批准号: 20080506)和国家自然科学基金重点项目(批准号: 50833005)资助.

Properties of Poly(lactic acid) Toughened by Epoxy-functionalized Elastomer

FENG Yu-Lin1,2, YIN Jing-Hua1, JIANG Wei1, ZHAO Gui-Yan1   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-03-17 Online:2012-02-10 Published:2012-01-13
  • Contact: Zhao Guiyan E-mail:wjiang@ciac.jl.cn;gyzh@ciac.jl.cn

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被引次数

26

摘要： 以2种不同结构的弹性体乙烯-辛烯共聚物接枝甲基丙烯酸缩水甘油酯(POE-g-GMA)和乙烯-丙烯酯甲酯-甲基丙烯酯缩水甘油酯三元共聚物(E-MA-GMA)增韧聚乳酸(PLA), 研究了接枝型与嵌段型弹性体的结构对聚乳酸增韧效果的影响. 结果表明, 接枝型聚合物POE-g-GMA与基体PLA之间具有良好的界面相互作用, 当POE-g-GMA的质量分数为15%时, 共混体系的缺口冲击强度为72.4 kJ/m2, 而E-MA-GMA的质量分数为15%时, 共混体系的缺口冲击强度为32.4 kJ/m2, 结果表明, 接枝型聚合物POE-g-GMA增韧效果明显优于嵌段型E-MA-GMA.

关键词: 聚乳酸, 增韧, 反应共混, 弹性体, 接枝型聚合物POE-g-GMA, 嵌段型聚合物E-MA-GMA

Abstract: Poly(lactic acid)(PLA) was toughened by reactive blending with epoxy-functionalized elastomer glycidyl methacrylate grafted poly (ethylene octane)(POE-g-GMA) and ethylene-methyl acrylate-glycidyl methacrylate random terpolymer(E-MA-GMA). The result shows that POE-g-GMA is more effective than E-MA-GMA to toughen PLA. When the mass fraction of POE-g-GMA is 15%(mass fraction), the notched impact strength of the PLA/POE-g-GMA blend is as high as 72.5 kJ/m2, while the impact strength of PLA/E-MA-GMA blend is only 32.4 kJ/m2 when the E-MA-GMA is 15%(mass fraction). The scanning electron microscopy displayed better interfacial adhesion for PLA/POE-g-GMA blends than PLA/E-MA-GMA, which was well consistent with their results of mechanical properties.

Key words: Poly(lactic acid), Toughening, Reactive blending, Elastomer, Glycidyl methacrylate grafted poly(ethylene octane), Ethylene-methyl acrylate glycidyl methacrylate random terpolymer

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