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Sustainable Chitosan-Dialdehyde Cellulose Nanocrystal Film

Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
Chemical Engineering Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada
School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
Authors to whom correspondence should be addressed.
Academic Editor: Tao-Hsing Chen
Materials 2021, 14(19), 5851;
Received: 19 August 2021 / Revised: 29 September 2021 / Accepted: 29 September 2021 / Published: 6 October 2021
(This article belongs to the Topic Multiple Application for Novel and Advanced Materials)
In this study, we incorporated 2,3-dialdehyde nanocrystalline cellulose (DANC) into chitosan as a reinforcing agent and manufactured biodegradable films with enhanced gas barrier properties. DANC generated via periodate oxidation of cellulose nanocrystal (CNC) was blended at various concentrations with chitosan, and bionanocomposite films were prepared via casting and characterized systematically. The results showed that DANC developed Schiff based bond with chitosan that improved its properties significantly. The addition of DANC dramatically improved the gas barrier performance of the composite film, with water vapor permeability (WVP) value decreasing from 62.94 g·mm·m−2·atm−1·day−1 to 27.97 g·mm·m−2·atm−1·day−1 and oxygen permeability (OP) value decreasing from 0.14 cm3·mm·m−2·day−1·atm−1 to 0.026 cm3·mm·m−2·day−1·atm−1. Meanwhile, the maximum decomposition temperature (Tdmax) of the film increased from 286 °C to 354 °C, and the tensile strength of the film was increased from 23.60 MPa to 41.12 MPa when incorporating 25 wt.% of DANC. In addition, the chitosan/DANC (75/25, wt/wt) films exhibited superior thermal stability, gas barrier, and mechanical strength compared to the chitosan/CNC (75/25, wt/wt) film. These results confirm that the DANC and chitosan induced films with improved gas barrier, mechanical, and thermal properties for possible use in film packaging. View Full-Text
Keywords: chitosan; nanocrystalline cellulose; bionanocomposite film; barrier properties; mechanical properties chitosan; nanocrystalline cellulose; bionanocomposite film; barrier properties; mechanical properties
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MDPI and ACS Style

Gao, C.; Wang, S.; Liu, B.; Yao, S.; Dai, Y.; Zhou, L.; Qin, C.; Fatehi, P. Sustainable Chitosan-Dialdehyde Cellulose Nanocrystal Film. Materials 2021, 14, 5851.

AMA Style

Gao C, Wang S, Liu B, Yao S, Dai Y, Zhou L, Qin C, Fatehi P. Sustainable Chitosan-Dialdehyde Cellulose Nanocrystal Film. Materials. 2021; 14(19):5851.

Chicago/Turabian Style

Gao, Cong, Shuo Wang, Baojie Liu, Shuangquan Yao, Yi Dai, Long Zhou, Chengrong Qin, and Pedram Fatehi. 2021. "Sustainable Chitosan-Dialdehyde Cellulose Nanocrystal Film" Materials 14, no. 19: 5851.

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