摘要
以N,N-二甲基乙酰胺/无水氯化锂(DMAc/LiCl)为溶剂配置聚丙烯腈(PAN)和棉纤维素溶液,采用旋涂法制备不同比例的PAN/棉纤维素薄膜。通过旋转黏度计对PAN/棉纤维素共混溶液的表观黏度进行研究,采用X射线衍射仪、傅里叶红外光谱仪、电子万能试验机以及吸水性能测试对PAN/棉纤维素薄膜的结构和性能进行了研究。结果表明,共混溶液的表观黏度随着纤维素含量的增加逐渐增大;DMAc/LiCl溶剂对PAN和棉纤维素的溶解为直接溶解,没有发生衍生化反应;PAN和棉纤维素均保持各自结晶结构不变;当棉纤维素含量为2.0%(质量分数,下同)时,复合薄膜的拉伸强度和断裂伸长率达到最大值;棉纤维素含量越高,复合薄膜的吸水性越好。
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 lose. film was improved with increasing content of cellulose
出处
《中国塑料》
CAS
CSCD
北大核心
2016年第5期41-45,共5页
China Plastics
基金
河南工程学院功能纺织高分子材料科技创新团队(CXTD2013004)
河南工程学院博士基金项目(D2014017)
关键词
聚丙烯腈
棉纤维素
薄膜
吸水性
polyacrylonitrile
cellulose
film
water absorption
