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Strengthening of Polyacrylonitrile Sheets Using Polyamide Epichlorohydrin Resin
  
DOI：10.11980/j.issn.0254-508X.2018.04.005
Key Words:polyacrylonitrile fiber sheets  polyamide epichlorohydrin resin  self-crosslinking  strengthening mechanism
Fund Project:陕西省2015科技统筹创新工程计划项目（2015KTCQ01-44）; 陕西省造纸技术及特种纸品重点实验室项目（No.12JS024）; 陕西省教育厅重点科学研究计划（重点实验室）（No.17JS016）。
Author NameAffiliation
ZHANG Su-feng* Department of Resources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science and Technology，Xi′an， Shaanxi Province， 710021 
ZHAO Dong-yan Department of Resources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science and Technology，Xi′an， Shaanxi Province， 710021 
HOU Chen Department of Resources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science and Technology，Xi′an， Shaanxi Province， 710021 
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Abstract:Taking advantage of the strengthening mechanism of polyamide epichlorohydrin （PAE）， PAE resin reinforced polyacrylonitrile （PAN） fiber sheets were successfully prepared， PAE resin was deposited on PAN fibers to form a “self-crosslinking” networks to enhance the binding of PAN fibers. By adding low amount （0.6 %） of PAE as cross-linkers， the tensile index， tear index， and elongation of the sheet were increased by 21.0%， 25.8%， 34.4%， respectively. Analyses of attenuated totalinternal reflectance fourier transform infrared （ATR-FTIR）， X-ray photoelectron spectroscopy （XPS） and scanning electron microscope （SEM） confirmed the formation of tertiary amine group in PAE-PAN sheets by the self-crosslinking of PAE polymer. This work suggested a promising PAN fiber sheet enhancement strategy by adding PAE resin as self-crosslinking material．
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