Novel bacterial cellulose-acrylic resin nanocomposites
authors Trovatti, E; Oliveira, L; Freire, CSR; Silvestre, AJD; Neto, CP; Pinto, JJCC; Gandini, A
nationality International
journal COMPOSITES SCIENCE AND TECHNOLOGY
author keywords Bacterial cellulose and acrylic resin emulsions; Nano composites; Polymer-matrix composites; Thermomechanical properties; Mechanical properties
keywords OPTICALLY TRANSPARENT COMPOSITES; SURFACE MODIFICATION; FIBERS; WHISKERS; NANOFIBERS
abstract The preparation and characterization of new nanocomposite films based on two acrylic emulsions, composed of random copolymers of butyl acrylate and methyl methacrylate, and bacterial cellulose is reported. The new composite materials were obtained through a simple and green approach by casting water-based suspensions of the acrylic emulsions and bacterial cellulose nanofibrils. The excellent compatibility between these matrices and the natural reinforcing fibers, observed by scanning electron microscopy (SEM), was reflected in the enhanced thermal and mechanical properties of the ensuing composites. Thus, an increase of around 30 degrees C in the maximum degradation temperature was observed for a 10% content of bacterial cellulose. The new composites showed glass-rubber transition temperature profiles comparable to those of the pristine matrices, as shown by DMA, and increasing elastic moduli with increasing the bacterial cellulose content. The tensile tests revealed a substantial increase in Young's modulus and tensile strength and a corresponding decrease in elongation at break with increasing bacterial cellulose load. (C) 2010 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0266-3538
year published 2010
volume 70
issue 7
beginning page 1148
ending page 1153
digital object identifier (doi) 10.1016/j.compscitech.2010.02.031
web of science category Materials Science, Composites
subject category Materials Science
unique article identifier WOS:000279137700017
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 7.094
5 year journal impact factor 6.78
category normalized journal impact factor percentile 94.231
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