Mechanical behavior of transparent nanofibrillar cellulose-chitosan nanocomposite films in dry and wet conditions

Tongfei Wu, Ramin Farnood, Kevin O'Kelly, Biqiong Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

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[U+05F3]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.

Original languageEnglish
Pages (from-to)279-286
Number of pages8
JournalJournal of the Mechanical Behavior of Biomedical Materials
Volume32
Early online date27 Jan 2014
DOIs
Publication statusPublished - Apr 2014

Keywords

  • Chitosan
  • Mechanical properties
  • Nanocomposites
  • Nanofibrillar cellulose

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Mechanical behavior of transparent nanofibrillar cellulose-chitosan nanocomposite films in dry and wet conditions'. Together they form a unique fingerprint.

Cite this