Preparation and Characterization of Polylactic Acid Fiber Enhanced Hydroxyapatite/Chitosan Composites

Abstract:

A novel hydroxyapatite/chitosan composite plate enhanced by polylactic acid fiber is prepared via in–situ hybridization in the semipermeable mold. The influence factors of the composites are evaluated by orthogonal test; FT–IR, XRD and SEM are also used to determine the relevance between the composition and performance. Analyses show that: hydroxyapatite with weak crystalline state is generated in the composites; there is hydrogen bonding associating existing in the complex system; preferable interface junction is created between the fiber and hydroxyapatite /chitosan matrix, which is able to play benign potentiation to the mechanical strength. Orthogonal test finds that the pecking order of the influencing factors to physical properties is: fiber content > fiber length > hydroxyapatite content. HA/CS composite plate enhanced by PLA–fiber can get a significantly increase on flexural strength and bending modulus, therefore, it will be a kind of potential orthopaedic materials which possesses the ability of completely degraded.

• Periodical: Advanced Materials Research (Volumes 368-373)
• Pages: 321-325
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.368-373.321
• Online since: October 2011
• Authors: Hai Rong Yin, Quan Xian Zu, Yang Wu
• Keywords: Chitosan (CS), Hydroxyapatite (HAP), In situ Hybridization, Orthogonal Test, Poly(lactic acid) Fiber

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