Journal of Chemistry

Journal of Chemistry / 2012 / Article

Open Access

Volume 9 |Article ID 570752 | https://doi.org/10.1155/2012/570752

Yan-Hua Cai, "Crystallization and Melting Behavior of Biodegradable Poly(L-lactic acid)/Talc Composites", Journal of Chemistry, vol. 9, Article ID 570752, 6 pages, 2012. https://doi.org/10.1155/2012/570752

Crystallization and Melting Behavior of Biodegradable Poly(L-lactic acid)/Talc Composites

Received19 Nov 2011
Accepted15 Jan 2012

Abstract

Crystallization and melting behavior of Poly(L-lactic acid)(PLLA)/Talc composites with different talc content were investigated in detail. The addition of talc can increase the overall crystallization rate of PLLA, 5%talc makes the melt-crystallization peak temperature of PLLA increase from 96.28 °C to 105.22 °C, and the crystallization enthalpy increases from 1.379 J•g-1 to 28.99 J•g-1. The melting behavior of PLLA/5%talc composites at a different heating rate during non-isothermal crystallization at different cooling rate shows that heating rate can affect the melting behavior of PLLA, with increasing of heating rate, the double melting peak degenerates to single melting peak. Melting behavior after isothermal crystallization and after cold isothermal crystallization and hot isothermal crystallization indicates that the double-melting peak of PLLA/5%talc composites results from melting-recrystallization.

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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