Biocomposites based on poly(L-lactic acid) and a functional synthetic filler

Document Type

Conference Proceeding

Publication Date

6-1-2004

Abstract

This work is a continuation of an earlier study on poly(L-lactic acid)/hydrotalcite composites prepared by solution mixing. Two types of these synthetic magnesium/aluminum carbonate/hydroxide minerals, at 30wt% filler level, were used; surface coated and uncoated. Differential scanning calorimetric and thermogravimetric analysis of the unfilled polymer and its composites showed significant differences in structure and morphology through the addition of the filler. The composites were exposed to a phosphate buffer saline solution, at 37°C, to study the "in vitro" degradation of the polymer, and also to simulated physiological solution to detect bioactivity by the formation of an apatite type structure layer. The composites were analyzed before and after immersion for predetermined time periods in both solutions, by weight changes, SEM, EDX and RAMAN microscopy. Preliminary results suggest that these novel composites could have a potential use in tissue engineering applications.

Identifier

2442598000 (Scopus)

Publication Title

Annual Technical Conference ANTEC Conference Proceedings

First Page

3366

Last Page

3370

Volume

3

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