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Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films

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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.

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Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films

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Acknowledgments

This work supported by the National Natural Science Foundation of China (32001279), the Foundation and Applied Foundation Research Project of Guangdong Province (2019A1515110191), the Special Funds for Rural Rejuvenation Strategy of Guangdong Province (2020KJ265), the Fundamental Research Funds from the Guangzhou Livelihood Project (202002020080), the integration of key technologies in green production of olecranon peach (200830191605759), and the Guangdong key laboratory of Science and Technology of Lingnan Specialty Food (2021B1212040013).

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Correspondence to Naiyu Xiao, Chuanfu Liu or Gengsheng Xiao.

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Zhang, X., Guo, H., Xiao, N. et al. Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films. Cellulose 29, 4413–4426 (2022). https://doi.org/10.1007/s10570-022-04511-y

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  • DOI: https://doi.org/10.1007/s10570-022-04511-y

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