A Novel Preparation Method for Nano-HA/PLA Composite with Grafted PLA

Yu Mei Xiao; Xu Dong Li; Hong Song Fan; Xiang Dong Zhu; Li Zhao Teng; Zhong Wei Gu; Xing Dong Zhang

doi:10.4028/www.scientific.net/KEM.309-311.1105

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 309-311A Novel Preparation Method for Nano-HA/PLA...

A Novel Preparation Method for Nano-HA/PLA Composite with Grafted PLA

Abstract:

Good interfacial interaction is crucial for preparation of inorganic-organic materials at a nanometer level. Poly(α-methacrylic acid) (PMAA) was grafted on the PLA surfaces via photooxidization and subsequent UV induced polymerization in an attempt to synthesize nano-hydroxyapatite/poly(lactide) (n-HA/PLA) composites. Grafting of PMAA on the PLA surface was confirmed using FTIR analysis and the size distribution measurement of the grafted-PLA (g-PLA) particles. n-HA/g-PLA composites were in situ synthesized via dropwise addition of Ca2+- and g-PLA containing solution to PO4 3-- solution. The prepared composites were characterized by FTIR, XRD，SEM and TEM means. Analytical results indicated that the g-PLA acts as a template to manipulate the nucleation and growth of n-HA crystals and thereby to control the morphology, size and anisotropy of n-HA crystals and their distribution over the organic phase. Chemical linkages and/or interfacial interactions between the n-HA and the g-PLA in the n-HA/g-PLA composite were further discussed.

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Periodical:

Key Engineering Materials (Volumes 309-311)

Pages:

1105-1108

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.309-311.1105

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Online since:

May 2006

Authors:

Yu Mei Xiao, Xu Dong Li, Hong Song Fan, Xiang Dong Zhu, Li Zhao Teng, Zhong Wei Gu, Xing Dong Zhang

Keywords:

Composite Material, Graft, Interfacial Interaction, Nanohydroxyapatite (HA), Poly(lactide)

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