Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films
- Resource Type
- Original Paper
- Authors
- Zhang, Xueqin; Guo, Haoqi; Xiao, Naiyu; Ma, Xinye; Liu, Chuanfu; Zhong, Le; Xiao, Gengsheng
- Source
- Cellulose. 29(8):4413-4426
- Subject
- Chitosan
Hydroxyethyl cellulose
Cross-linking
Nanocomposite films
Functional properties
- Language
- English
- ISSN
- 0969-0239
1572-882X
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 abstract: Preparation and properties of epichlorohydrin-cross-linked chitosan/hydroxyethyl cellulose based CuO nanocomposite films