Investigation of Voids in Polyacrylonitrile Fibers by USAXS and SAXS  

作　　者：TANG Haitong MENG Fanling LIU Yan JIN Shi WANG Xiaodong GAO Zhongmin CHE Xiaolei 

机构地区：[1]Key Laboratory of Automobile Materials,Ministry of Education,College of Materials Science and Engineering,Jilin University,Changchun 130012,P.R.China [2]School of Material Science and Engineering,Jilin Jianzhu University,Changchun 130018,P.R.China [3]First Hospital of Jilin University,Changchun 130021,P.R.China [4]State Key Laboratory of Inorganic Synthesis&Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,P.R.China [5]College of Physics,Jilin University,Changchun 130012,P.R.China

出　　处：《Chemical Research in Chinese Universities》2019年第6期1070-1075,共6页高等学校化学研究（英文版）

摘　　要：The void structure of polyacrylonitrile(PAN)fibers was investigated using ultra-small angle X-ray scat-tering(USAXS)and small angle X-ray scattering(SAXS).A quantitative method was developed to analyze connected USAXS/SAXS data and thus determine the void parameters of PAN fibers.The results showed that voids affected the mechanical performance of PAN fibers and were present throughout the entire wet-spinning process.When the abso-lute quantity and size of voids decreased,the tensile strength and modulus of PAN fibers increased.The void para-meters were optimized by controlling the production process,and thus the tensile strength and modulus of PAN fibers were increased.The method for analyzing the void structure developed in this study is useful for analyzing voids over with larger size range,as well as the effect of the void structure on the mechanical performance of fibers.

关 键 词：Polyacrylonitrile(PAN)fiber Void structure Ultra-small ANGLE X-RAY SCATTERING Small ANGLE X-RAY SCATTERING Mechanical performance 

分 类 号：TQ3[化学工程]