Effect of UV Irradiation on PAN Precursor Fibers and Stabilization Process

作     者：袁慧五 YUAN Huiwu1,WANG Yuansheng1,2,YU Hongwei1,WEI Zheng1,GE Bao2,MEI Yongjia2 (1.Department of Chemistry and Material,Naval University of Engineering,Wuhan 430033,China;2.State Key Laboratory of Polymer Material Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065,China)

作者机构：Department of Chemistry and MaterialNaval University of Engineering 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2011年第26卷第3期

页      面：449-454页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Funded by the National Natural Science Foundation of China (No. 51073098) the State Key Laboratory of Polymer Material Engineering(Sichuan University) (Nos.KF200901 and 2030925123008) 

主　　题：PAN precursor fibers UV irradiation cyclization crystallite size morphology 

摘      要：A low-cost rout for modification the polyacrylontrile（PAN） precursor fibers was *** approach involved pretreatment PAN precursor fibers with UV irradiation for various periods of time before the fibers were *** effect of UV irradiation on the chemical structure,orientation factor,density,crystallite size and morphology of the fibers in the process of stabilization was characterized by use of fourier transform infrared spectroscopy（FTIR）,float-sink procedure,X-ray diffraction（XRD）,scanning electron microscope（SEM）,*** results showed that UV irradiation could increase the density of the fibers in stabilization *** analysis indicated that the cyclization of nitrile groups was initiated at room temperature by UV *** transformation of C≡N groups to C=N ones was accelerated in the process of *** orientation factor of irradiated fibers was also *** crystallite size was decreased at first and increased later,and the better irradiation time of UV was 3 min according to the XRD *** analysis indicated that irradiation could decrease the internal and surface defects of the stabilized fibers treated at 300 ℃.