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Polymers 2012, 4(1), 590-599; doi:10.3390/polym4010590

Reinforced Materials Based on Chitosan, TiO2 and Ag Composites

Soft Materials Group, School of Chemistry, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia
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Received: 30 December 2011 / Revised: 30 January 2012 / Accepted: 8 February 2012 / Published: 16 February 2012
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Abstract

This study investigates the mechanical reinforcement of chitosan with TiO2 and Ag nanoparticles, as well as their water vapour transmission rates and water resistance behaviour. The mechanical properties of chitosan were improved by addition of TiO2 or Ag, with significant increases in Young’s modulus (from 25 MPa to ~300 MPa), tensile strength (from 6 MPa to 18–35 MPa) and toughness (from 1.3 J g−1 to 7–8 J g−1). The water vapour transmission rates (368–413 g m−2 d−1) were found to be similar for both materials. Inclusion of Ag reduced the water resistance (from 823% to 1,000%), while inclusion of TiO2 yielded significant improvement in water resistance (from 823% to 100%).
Keywords: chitosan; Ag; TiO2; nanoparticles; mechanical reinforcement; composite chitosan; Ag; TiO2; nanoparticles; mechanical reinforcement; composite
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Amin, K.A.M.; Panhuis, M. Reinforced Materials Based on Chitosan, TiO2 and Ag Composites. Polymers 2012, 4, 590-599.

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