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Correlation between Composition, Structure and Properties of Poly(lactic acid)/Polyadipate‐Based Nano‐Biocomposites
Author(s) -
Martino Verónica P.,
Ruseckaite Roxana A.,
Jiménez Alfonso,
Averous Luc
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900351
Subject(s) - plasticizer , materials science , lactic acid , dispersion (optics) , composite material , nano , nanocomposite , morphology (biology) , chemical engineering , genetics , physics , bacteria , optics , biology , engineering
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.