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Open AccessArticle

Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging

1
Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan
2
Department of Chemistry, Prof. Rajendra Singh Institute of Physical Sciences for Study and Research, V.B.S Purvanchal University Jaunpur, Siddikpur U.P. 222002, India
3
Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
4
Graduate Institute of Dental and Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(1), 202; https://doi.org/10.3390/polym12010202 (registering DOI)
Received: 15 December 2019 / Revised: 8 January 2020 / Accepted: 10 January 2020 / Published: 13 January 2020
(This article belongs to the Special Issue Carbon Materials Modified Polymeric Composites)
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 × 10−11 to 2.41 × 10−11 gm−1 s−1Pa−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. View Full-Text
Keywords: nanocomposite; chitosan; cellulose nanocrystal; UV barrier; mechanical properties nanocomposite; chitosan; cellulose nanocrystal; UV barrier; mechanical properties
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MDPI and ACS Style

Yadav, M.; Behera, K.; Chang, Y.-H.; Chiu, F.-C. Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging. Polymers 2020, 12, 202.

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