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

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (11): 2674.

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

WEI Jun-Chao^1*, MA Li-Li², DAI Yan-Feng¹, CHEN Yi-Wang¹, ZHANG Pei-Biao², CUI Yi², CHEN Xue-Si^2*

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.

Abstract

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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WEI Jun-Chao*, MA Li-Li, DAI Yan-Feng, CHEN Yi-Wang, ZHANG Pei-Biao, CUI Yi, CHEN Xue-Si*. Crystallization Behavior of Modified Hydroxyapatite/Poly(L-lactide) Nanocomposites[J]. Chem. J. Chinese Universities, 2011, 32(11): 2674.

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

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