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| Preparation and Adsorption Behaviors for Cd2+ of Surface-modified Polypropylene Cotton with Acrylic Acid |
| LI Aixue ZHAO Changli** LIU Changfeng ZHU Xiaowei |
| (School of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142) |
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Cite this article:
LI Aixue ZHAO Changli** LIU Changfeng ZHU Xiaowei. Preparation and Adsorption Behaviors for Cd2+ of Surface-modified Polypropylene Cotton with Acrylic Acid. Chinese Journal of Materials Research, 2013, 27(1): 103-107.
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Abstract ABSTRACT Surface-modified polypropylene (PP) cotton with acrylic acid (AA) was prepared by cross-linked grafting copolymerization of AA onto PP filter cotton, using AA as a functional monomer and N, N'-Methylenebisacrylamide (MBA) as a cross-linked agent in the present of UV light, and the cross-linked grafting ratio of PP cotton can reach 220%. The optimum process conditions is: benzophenone (BP) content 0.50 g/100 g AA, MBA content 5.0 g/100 g AA, the mass ratio of AA to PP 5 : 1, and the irradiation time 25 min. The structure of surface-modified PP cotton with AA was characterized with FT-IR. The adsorption behaviors for Cd2+ were investigated. The experimental results show that surface-modified PP cotton with AA has a good adsorption capacity and the adsorption ratio reached above 95% when Cd2+ concentration was less than 50 mg·L-1. The adsorption equilibrium data of Cd2+ do not obey Langmuir model and Freundlich model in the investigated concentration range.
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