Effect of Different Doses of Electron Beam Irradiation on the Structure of PAN Precursor Fibers and Resultant Stabilized Fibers
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第3期
论文作者：余红伟 WANG Yuansheng WEI Zheng 夏革清
文章页码：574 - 579
摘 要：Different doses of electron beam was imposed on the polyacrylonitrile（PAN） precursor fibers before the fibers were stabilized. The effect of electron beam irradiation on the chemical structure, crystallite size of PAN precursor fibers and density, oxygen content, transverse section morphology of the stabilized fibers in the stabilization process were characterized by the use of fourier transform infrared spectroscopy（FTIR）, float-sink procedure, elemental analysis and scanning electron microscope（SEM）, respectively. The results showed that the extent of cyclization was increased and the crystallite size was decreased. We found that electron beam irradiation could accelerate the cyclization reaction and stabilization reaction in the stabilization process through density test and elemental analysis. We also found that the effect of 200 kGy electron beam irradiated fibers with the stabilization time of 75 min was better than that of the original stabilized fibers with 90 min. These results demonstrate that electron beam irradiation can shorten the stabilization time.
余红伟1，WANG Yuansheng1,3，WEI Zheng1，夏革清4
1. Department of Chemistry and Material, Naval University of Engineering3. State Key Laboratory of Polymer Material Engineering(Sichuan University)4. Department of Obestetrics & Gynecology in Union Hospital of Huazhong University of Science and Technology
摘 要：Different doses of electron beam was imposed on the polyacrylonitrile（PAN） precursor fibers before the fibers were stabilized. The effect of electron beam irradiation on the chemical structure, crystallite size of PAN precursor fibers and density, oxygen content, transverse section morphology of the stabilized fibers in the stabilization process were characterized by the use of fourier transform infrared spectroscopy（FTIR）, float-sink procedure, elemental analysis and scanning electron microscope（SEM）, respectively. The results showed that the extent of cyclization was increased and the crystallite size was decreased. We found that electron beam irradiation could accelerate the cyclization reaction and stabilization reaction in the stabilization process through density test and elemental analysis. We also found that the effect of 200 kGy electron beam irradiated fibers with the stabilization time of 75 min was better than that of the original stabilized fibers with 90 min. These results demonstrate that electron beam irradiation can shorten the stabilization time.
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