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《China Synthetic Fiber Industry》 2006-01
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Grafting modification of polyacrylonitrile fiber for improving hygroscopicity

Wang Yazhen,Gao Yue ,Wang Qingshi ,Zhao Wangyin ,Du Shuping State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 200051 College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006 Dadong Office of Shenyang Branch,China Network Communications Group Co. ,Shenyang 110041  
The modification for improving the hygroscopicity of polyacrylonitrile fiber was conducted via two-step graft copolymerization. The effects of the varieties and amount of swellers, emulsifiers and initiators and the process conditions of activating pretreatment and graft copolymerization on the hygroscopicity of polyacrylonitrile fiber were discussed. The hygroscopicity of polyacrylonitrile fabrics can be up to 7.0% under the optimized conditions as followed:chlorobenzene sweller 7.0 g/L, nonylphenol ethoxylates(OP) emulsifier 2. 1 g/L, dibenzoyl peroxide( BPO) initiator 2. 5 g/L, hygroscopic amide monomer mass fraction 2. 0% , activating pretreatment temperature 75 ℃ and time 30 min, graft copolymerization temperature 85 ℃ and time 60 min, sodium carbonate treating solution 2. 0 g/L.
【CateGory Index】: TQ342.31
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