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首页> 外文期刊>Journal of Applied Polymer Science >Chemical Modification of Polypropylene Fibers Grafted Vinyl Imidazole/Acrylonitrile Copolymer Prepared By Gamma Radiation and Its Possible Use for the Removal of Some Heavy Metal Ions
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Chemical Modification of Polypropylene Fibers Grafted Vinyl Imidazole/Acrylonitrile Copolymer Prepared By Gamma Radiation and Its Possible Use for the Removal of Some Heavy Metal Ions

机译：γ辐射制备的聚丙烯纤维接枝乙烯基咪唑/丙烯腈共聚物的化学改性及其在某些重金属离子去除中的应用

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摘要

The chemical modification of polypropylene (PP) fibers by graft copolymerization with vinylimidazole (VIm) and acrylonitrile (AN) was carried out using gamma-radiation. Preparation conditions, such as irradiation dose, comonomer concentration and composition and type of solvent, affecting the degree of grafting were investigated. The suitable diluent for obtaining reasonable graft VIm/ AN copolymer yield was acetone. The higher grafted yield was achieved by increasing the amount of vinylimidazole in comonomer feed solution as well as irradiation dose. The derivatives of PP-g-P(Vlm/AN) grafted fibers of different functional groups were obtained by treating the grafted fibers with various organic reagents containing reactive amino groups, such as sulpha-drug compounds, aliphatic- and aromatic amines. Characterization of the obtained graft copolymers and their chemical treatments with different amines was also investigated. It was observed that the nitrile group in PP-g-P(Vlm/AN) polymer undergoes simple addition reaction via nucleophilic interaction mechanism to produce the corresponding PP-graft-P(vinylimidazole/acrylomidine) derivatives. The ability of the grafted fibers and their treated forms to absorb some metal ions as Cd, Hg, and Pb from their individual and mixture solutions was evaluated. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 11-18, 2009
机译：使用伽马辐射通过与乙烯基咪唑（VIm）和丙烯腈（AN）进行接枝共聚对聚丙烯（PP）纤维进行化学改性。研究了辐照剂量，共聚单体浓度，溶剂组成和类型等制备条件对接枝程度的影响。为了获得合理的接枝VIm / AN共聚物收率，合适的稀释剂是丙酮。通过增加共聚单体进料溶液中乙烯基咪唑的量以及辐照剂量，可以实现更高的接枝率。通过用各种含有反应性氨基的有机试剂（如磺胺类药物化合物，脂肪族和芳香族胺）处理接枝纤维，可以得到具有不同官能团的PP-g-P（Vlm / AN）接枝纤维的衍生物。还研究了所得接枝共聚物的表征及其用不同胺的化学处理。观察到PP-g-P（Vlm / AN）聚合物中的腈基通过亲核相互作用机理进行简单的加成反应，生成相应的PP-接枝-P（乙烯基咪唑/丙烯酰胺）衍生物。评估了接枝纤维及其处理形式从其单独溶液和混合物溶液中吸收某些金属离子（如Cd，Hg和Pb）的能力。 （C）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：11-18，2009

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