Journal
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
Volume 32, Issue -, Pages 279-286Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmbbm.2014.01.014
Keywords
Chitosan; Nanofibrillar cellulose; Nanocomposites; Mechanical properties
Funding
- Irish Research Council for Science, Engineering Technology
- University of Sheffield
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Transparent, biocompatible and biodegradable chitosan (CS) nanocomposite films reinforced with nanofibrillar cellulose (NFC) were prepared by solution casting. The effects of NFC content on the mechanical properties in dry and wet conditions were investigated. The incorporation of NFC significantly enhanced the mechanical properties, especially in wet conditions. The ultimate tensile strength and Young's modulus of chitosan were improved by 12 times and 30 times, respectively, for the nanocomposite containing 32 wt% of NFC in wet conditions. The mechanism of the remarkable reinforcements was studied by analyzing the swelling behavior of NFC-CS nanocomposites. The mechanical properties of wet NFC-CS nanocomposite films matched well with those of human skin, which demonstrate potential for uses as artificial skin and wound dressings. (C) 2014 Elsevier Ltd. All rights reserved.
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