Journal
POLYMERS
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/polym12010202
Keywords
nanocomposite; chitosan; cellulose nanocrystal; UV barrier; mechanical properties
Categories
Funding
- Chang Gung Memorial Hospital [CMRPD2J0081/BMRP392]
- Ministry of Science and Technology (Taiwan) [MOST 106-2221-E-182-058-MY3, MOST 108-2811-E-182-500]
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In this study, green composite films based on cellulose nanocrystal/chitosan (CNC/CS) were fabricated by solution casting. FTIR, XRD, SEM, and TEM characterizations were conducted to determine the structure and morphology of the prepared films. The addition of only 4 wt.% CNC in the CS film improved the tensile strength and Young's modulus by up to 39% and 78%, respectively. Depending on CNC content, the moisture absorption decreased by 34.1-24.2% and the water solubility decreased by 35.7-26.5% for the composite films compared with neat CS film. The water vapor permeation decreased from 3.83 x 10(-11) to 2.41 x 10(-11) gm(-1) s(-1)Pa(-1) in the CS-based films loaded with (0-8 wt.%) CNC. The water and UV barrier properties of the composite films showed better performance than those of neat CS film. Results suggested that CNC/CS nanocomposite films can be used as a sustainable packaging material in the food industry.
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