高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (11): 2674.

• 研究论文 • 上一篇    下一篇

改性羟基磷灰石/聚乳酸纳米复合材料的结晶行为

魏俊超1, 马丽莉2, 戴延凤1, 陈义旺1, 章培标2, 崔毅2, 陈学思2   

  1. 1. 南昌大学化学系, 南昌 330031;
    2. 中国科学院长春应用化学研究所, 生态环境高分子重点实验室, 长春 130022
  • 收稿日期:2011-03-14 修回日期:2011-05-02 出版日期:2011-11-10 发布日期:2011-10-14
  • 通讯作者: 陈学思;魏俊超 E-mail:xschen@ciac.jl.cn;junchaowei@gmail.com
  • 基金资助:

    国家自然科学基金(批准号: 50973107, 50673090和50733003)资助.

Crystallization Behavior of Modified Hydroxyapatite/Poly(L-lactide) Nanocomposites

WEI Jun-Chao1*, MA Li-Li2, DAI Yan-Feng1, CHEN Yi-Wang1, ZHANG Pei-Biao2, CUI Yi2, CHEN Xue-Si2*   

  1. 1. Department of Chemistry, Nanchang University, Nanchang 330031, China;
    2. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2011-03-14 Revised:2011-05-02 Online:2011-11-10 Published:2011-10-14
  • Contact: CHEN Xue-Si;WEI Jun-Chao E-mail:xschen@ciac.jl.cn;junchaowei@gmail.com
  • Supported by:

    国家自然科学基金(批准号: 50973107, 50673090和50733003)资助.

PDF (PC)

被引次数

25

摘要： 利用溶剂复合的方法制备了具有良好生物相容性的表面接枝聚(γ-苄基-L-谷氨酸)的改性羟基磷灰石/聚乳酸纳米复合材料, 并研究了其熔融与结晶行为. 结果表明, 聚乳酸的玻璃化转变温度为60.3 ℃, 而复合材料的玻璃化转变温度达到65.8 ℃, 不同样品在140 ℃等温结晶后, 改性羟基磷灰石/聚乳酸复合材料的球晶直径仅为聚乳酸(PLLA)球晶直径的16.7%~66.7%. 复合材料的熔点提高到184.4 ℃.

关键词: 聚乳酸, 羟基磷灰石, 表面改性, 纳米复合材料, 结晶

Abstract: Biocompatible poly(γ-benzyl-L-glutamate) modified hydroxyapatite/poly(L-lactide)(PLLA) nanocomosites were prepared via solvent-mixing method. Their melting and crystallization behavior were characterized by differential scanning calorimetry(DSC) and polarized optical microscopy(POM). The results show that the glass transition temperature of PLLA is 60.3 ℃ and that of the composite can reach 65.8 ℃. After isothermally crystallized at 140 ℃, the spherulites diameter of modified HA/PLLA composites was only 16.7%\_66.7% compared with that of PLLA and the melting point of the composite can rise to 184.4 ℃.

Key words: Poly(L-lactide), Hydroxyapatite, Surface modification, Nanocomposite, Crystallization

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