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Photo-Grafting Copolymerization of PP Nonwoven Fabric and Its Application for Acidic Dye Adsorption and Filtration

ISSN号：1000-1832
期刊名称：《东北师大学报：自然科学版》
时间：0
分类：O631.34[理学—高分子化学;理学—化学] TQ610.9[化学工程—精细化工]
作者机构：[1]College of Textile and Clothing Engineering,Soochow University, Suzhou 215021, China, [2]College of Chemistry, Chemical Engineering and Materials Science,Soochow University, Suzhou 215123, China, [3]Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215123, China, [4]National Engineering Laboratory for the Modern Silk (Suzhou), Suzhou 215123, China
相关基金：the Priority Academic Development Program for Textile Science and Textile Engineering of Jiangsu Higher Education Institutions,China; the Environmental Protection Department of Jiangsu Province,China（No.2012009）; Suzhou Municipal Government,China（No.SYG201202）

作者：石小丽[1,2], 刘颖[3], 宋欢[1], 万恒[2], 朱新生[1,4], 潘志娟[1,4]

中文摘要：

The monomer methacrylamido propyl trimethy ammonium chloride( MAPTAC) was copolymerized onto the fiber surface of polypropylene( PP) nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and adsorptive filtration performance of the resulted PP fabrics were investigated.The results showed that the grafting copolymerization preferred to happen in the inner layer of the fabrics. The water flux of the grafted fabrics decreases with the increase of grafting yield. The collapse of the grafted polymer chains causes the flux increase in acidic condition,or vice versa at alkaline version. The coiling of the polyelectrolyte chains upon the dye adsorption seems to violate the routine assumption of the rigid substrate, and this gets the adsorption energy constant negative. The static adsorption process follows the Lagergren’s pseudo-second order kinetic equation. The removals of circa( ca.) 100% of the total permeation volume3 500 mL simulated dye wastewater was reached during permeation.The dye adsorbed fabrics were regenerated by the mixed media of the cationic surfactant / ethanol /water. The grafted fabric assumes stable fabric integrity and stability during permeation,and presents excellent dye adsorption capacity,easy desorption, and repeatable utilization.

英文摘要：

The monomer methacrylamido propyl trimethy ammonium chloride（ MAPTAC） was copolymerized onto the fiber surface of polypropylene（ PP） nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and adsorptive filtration performance of the resulted PP fabrics were investigated.The results showed that the grafting copolymerization preferred to happen in the inner layer of the fabrics. The water flux of the grafted fabrics decreases with the increase of grafting yield. The collapse of the grafted polymer chains causes the flux increase in acidic condition,or vice versa at alkaline version. The coiling of the polyelectrolyte chains upon the dye adsorption seems to violate the routine assumption of the rigid substrate, and this gets the adsorption energy constant negative. The static adsorption process follows the Lagergren＇s pseudo-second order kinetic equation. The removals of circa（ ca.） 100% of the total permeation volume3 500 mL simulated dye wastewater was reached during permeation.The dye adsorbed fabrics were regenerated by the mixed media of the cationic surfactant / ethanol /water. The grafted fabric assumes stable fabric integrity and stability during permeation,and presents excellent dye adsorption capacity,easy desorption, and repeatable utilization.

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