A comparison of partially acetylated nanocellulose, nanocrystalline cellulose, and nanoclay as fillers for high-performance polylactide nanocomposites

ABSTRACT Partially acetylated cellulose nanofibers (CNF) were chemically extracted from sisal fibers and the performance of those CNF as nanofillers for polylactide (PLA) for food packaging applications was evaluated. Three PLA nanocomposites; PLA/CNF (cellulose nanofibers), PLA/CNC (nanocrystalline...

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Bibliographic Details
Published in:Journal of applied polymer science 2016-04, Vol.133 (14), p.np-n/a
Main Authors: Trifol, Jon, Plackett, David, Sillard, Cecile, Hassager, Ole, Daugaard, Anders Egede, Bras, Julien, Szabo, Peter
Format: Article
Language:English
Subjects:
barrier properties
Cellulose
cellulose nanofibers (CNF)
Materials science
microfibrillated cellulose
nanoclays
Nanocomposites
Nanocrystals
Nanofibers
Nanostructure
polylactic acid
Polylactides
Polymers
Relative humidity
Water vapor
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Summary:ABSTRACT Partially acetylated cellulose nanofibers (CNF) were chemically extracted from sisal fibers and the performance of those CNF as nanofillers for polylactide (PLA) for food packaging applications was evaluated. Three PLA nanocomposites; PLA/CNF (cellulose nanofibers), PLA/CNC (nanocrystalline cellulose), and PLA/C30B (CloisiteTM 30B, an organically modified montmorillonite clay) were prepared and their properties were evaluated. It was found that CNF reinforced composites showed a larger decrease on oxygen transmission rate (OTR) than the clay‐based composites; (PLA/CNF 1% nanocomposite showed a 63% of reduction at 23°C and 50% RH while PLA/C30B 1% showed a 26% decrease) and similar behavior on terms of water vapor barrier properties with 46 and 43%, respectively of decrease on water vapor transmission rate at 23°C and 50% RH (relative humidity). In terms of mechanical and thermomechanical properties, CNF‐based nanocomposites showed better performance than clay‐based composites without affecting significantly the optical transparency. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43257.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.43257