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Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films |
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| Authors: | Zhang Xueqin Guo Haoqi Xiao Naiyu Ma Xinye Liu Chuanfu Zhong Le Xiao Gengsheng |
| Institution: | 1.College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China ;2.Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China ;3.Guangdong Key Laboratory of Science and Technology of Lingnan Specialty Food, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China ;4.Key Laboratory of Chinese Medicinal Resource From Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China ;5.State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China ; |
| Abstract: | This study introduces an effective route to fabricate chitosan (CS)-based film. The films were prepared through cross-linking reaction between CS and hydroxyethyl cellulose (HEC) using epichlorohydrin (ECH) as the cross-linker and simultaneously in-situ loading with CuO nanoparticles. FT-IR and loading efficiency results indicated the occurrence of inter- and intra-molecular cross-linking reaction between CS and HEC. XRD and EDS analyses showed that the CuO nanoparticles were evenly deposited onto CS film matrixes. SEM characterization showed that the films were of compact, dense and uniform cross morphologies, as well as obvious voids. The films also exhibited desired swelling ratio and water vapor permeability. The enhanced tensile strength was obtained with a maximum value of 77.02?±?3.26 MPa, while the stretch-ability slightly decreased. The thermal stability of the films decreased after cross-linking with HEC. The antibacterial ability of the films was generally improved with the increase of HEC and ECH contents. Graphical abstractPreparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films  |
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