Citation: Susan Azizi, Mansor Bin Ahmad, Nor Azow Ibrahim, Mohd Zobir Hussein, Farideh Namvar. Preparation and Properties of Poly(vinyl alcohol)/Chitosan Blend Bio-nanocomposites Reinforced by Cellulose Nanocrystals[J]. Chinese Journal of Polymer Science, ;2014, 32(12): 1620-1627. doi: 10.1007/s10118-014-1548-0 shu

Preparation and Properties of Poly(vinyl alcohol)/Chitosan Blend Bio-nanocomposites Reinforced by Cellulose Nanocrystals

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Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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1. Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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2. Mashhad Branch, Islamic Azad University, Mashhad, Iran
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Corresponding author: Susan Azizi, azisusan@gmail.com
Received Date: 5 March 2014
Revised Date: 29 May 2014

Fund Project: This work was financially supported by Universiti Putra Malaysia (research grant RUGS 9199840), and the authors are grateful to staff of the Department of Chemistry UPM for their technical assistance.

The aim of this paper is to report the effect of the addition of cellulose nanocrystals (CNCs) on the mechanical, thermal and barrier properties of poly(vinyl alcohol)/chitosan (PVA/Cs) bio-nanocomposites films prepared through the solvent casting process. The characterizations of PVA/Cs/CNCs films were carried out in terms of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), oxygen transmission rate (OTR), and tensile tests. TEM and SEM results showed that at low loading levels, CNCs were dispersed homogenously in the PVA/Cs matrix. The tensile strength and modulus in films increased from 55.1 MPa to 98.4 MPa and from 395 MPa to 690 MPa respectively, when CNCs content went from 0 wt% to 1.0 wt%. The thermal stability and oxygen barrier properties of PVA/Cs matrix were best enhanced at 1.0 wt% of CNCs loading. The enhanced properties attained by incorporating CNCs can be beneficial in various applications.
- Bio-nanocomposite,
- Poly(vinyl alcohol)/chitosan,
- Cellulose nanocrystals,
- Mechanical properties,
- Thermal properties
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