关键词: 聚丙烯腈, 纤维素, 薄膜, 吸水性

Abstract: PAN and cellulose were dissolved in a solvent of DMAc/LiCl, from which PAN/cellulose film was prepared by spin coating. The apparent viscosity of PAN/cellulose solution was measured by rotational viscometer, which was increased with increasing content of cellulose. The structure and properties of PAN/cellulose films were studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and electronic universal testing machine, as well as water absorption tester. It showed that PAN and cellulose were dissolved directly without derivatization in DMAc/LiCl solvent and maintained their own crystalline structures. When the cellulose content was 2 %, the tensile strength and elongation at break of PAN/cellulose film reached a maximum value. The property of water absorption for PAN/cellulose film was improved with increasing content of cellulose.

Key words: polyacrylonitrile, cellulose, film, water absorption