Solidification behavior of PLLA/nHA nanocomposites

As part of a broader effort to establish processing-structure-property relationships in PLLA/nHA, which is currently under consideration for bioresorbable scaffolds for bone repair, hot stage optical microscopy and differential scanning calorimetry have been used to investigate the solidification behavior of a series of medical grade PLLA/nHA nanocomposites. The presence of the nHA resulted in an increase in the number of spherulites per unit volume during Isothermal crystallization, but there was a substantial decrease in the spherulite growth rate with increasing nHA content in the temperature range 100-130 degrees C, argued to be associated with a significant increase in the melt viscosity in the presence of the nHA The consequences for the global solidification rates and the phase structure of the PLLA/nHA nanocomposites are discussed. (C) 2010 Elsevier Ltd. All rights reserved.

Published in:
Composites Science and Technology, 70, 13, 1813-1819
Delabarde, C. Plummer, C. J. G. Bourban, P. -E. Manson, J. -A. E.
17th International Conference on Composite Materials
JUL 27-31, 2009
Edinburgh, SCOTLAND
Sp. Iss. SI

 Record created 2012-06-29, last modified 2020-07-30

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