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Correlation between Composition, Structure and Properties of Poly(lactic acid)/Polyadipate-Based Nano-Biocomposites

✍ Scribed by Verónica P. Martino; Roxana A. Ruseckaite; Alfonso Jiménez; Luc Averous

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
606 KB
Volume
295
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Poly(lactic acid) plasticized with 15 and 20 wt.‐% of polyadipate was melt‐blended with different amounts of an O‐MMT (1–5 wt.‐%) to prepare nano‐biocomposites. The effect of plasticizer and nanofiller contents on the morphology and on thermal, mechanical and barrier properties of PLA‐based nano‐biocomposites was evaluated in order to understand their structure‐properties relationships. The oxygen transmission rate was notably reduced (around 45%) with increasing amount of clay due to an increased tortuosity. However, for clay concentrations above 3 wt.‐%, a significant detriment in ductile properties could also be observed. For a given amount of nanofiller, the increasing plasticizer concentration improved the clay dispersion through the polymeric matrix.

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