The Effect of Ultrasonic Etching on the Structure of Stabilized PAN Fibers
The effect of ultrasonic etching on the crystalline structure,fibrillar structure,skin-core structure of stabilized PAN fibers was studied by XRD and SEM.It has been found various degree of decrease occurs in the crystallite size and crystallinity of fibers heated at different temperatures after ultrasonic etching.Fibrillar structure of fibers heated at 195℃~245℃ appear after ultrasonic etching in 90wt% DMSO solution for 6h.When the stabilization temperature is over 245℃,no separated fibrils or macrofibrils are found.When stabilized fibers were etched in pure DMSO,skin-core morphology was observed for the fibers heated at 235℃~265℃.The method of ultrasonic etching using pure DMSO confirms the structural difference between the skin and the core,also makes the difference visual.
ultrasonic etching stabilized PAN fiber crystalline structure fibrillar structure skin-core structure
Xiuying HU Chengguo Wang Qifen Wang Wenbo Lu Meiiie YU
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Educati Carbon Fiber Engineering Research Center, Faculty of Materials Science, Shandong University, Jinan 2 Institute of Shandong Nonmetallic Materials, Jinan 250031, China
国际会议
厦门
英文
592-597
2012-01-04(万方平台首次上网日期,不代表论文的发表时间)