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

Tongfei Wu; Ramin Farnood; Kevin O'Kelly; Biqiong Chen

doi:10.1016/j.jmbbm.2014.01.014

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

School of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

95 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 language	English
Pages (from-to)	279-286
Number of pages	8
Journal	Journal of the Mechanical Behavior of Biomedical Materials
Volume	32
Early online date	27 Jan 2014
DOIs	https://doi.org/10.1016/j.jmbbm.2014.01.014
Publication status	Published - Apr 2014

Keywords

Chitosan
Mechanical properties
Nanocomposites
Nanofibrillar cellulose

ASJC Scopus subject areas

Biomaterials
Biomedical Engineering
Mechanics of Materials

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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.",

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AU - Wu, Tongfei

AU - Farnood, Ramin

AU - O'Kelly, Kevin

AU - Chen, Biqiong

PY - 2014/4

Y1 - 2014/4

N2 - 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.

AB - 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.

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KW - Mechanical properties

KW - Nanocomposites

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

Abstract

Keywords

ASJC Scopus subject areas

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