Surface modification of polyacrylonitrile (PAN) fibers by grafting of natural polymer-soybean protein (SP) |
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Authors: | Zhao Jia Yangong Yang |
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Affiliation: | (1) College of Materials Science and Engineering, Shandong University of Technology, Zibo, 255049, P.R. China |
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Abstract: | Summary A novel method of modifying polyacrylonitrile (PAN) fibers by grafting of soybean protein (SP) onto it was studied. The reactant
of PAN-g-SP fiber was prepared based on chlorination of the hydrolyzed PAN fiber. The effects of chlorination and grafting
conditions on the grafting efficiency were investigated. The grafting efficiency first increases with the increase of the
addition of thionyl chloride (SOCl2), chlorination time and temperature and then levels off. In grafting reaction, grafting efficiency increases at first and
then declines significantly with increasing addition of sodium hydroxide (NaOH), grafting temperature and time. The grafted
polymer was characterized by FT-IR spectroscopy, X-ray diffraction and SEM images. The results indicated that SP was grafted
onto the PAN fiber. PAN-g-SP also exhibits good hygroscopicty and proper mechanical properties. |
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