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首页> 外文期刊>Journal of Applied Polymer Science >Radiation synthesis and characterization of poly(N-vinyl-2-pyrrolidone/acrylic acid) and poly(N-vinyl-2-pyrrolidone/acrylamide) hydrogels for some metal-ion separation
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Radiation synthesis and characterization of poly(N-vinyl-2-pyrrolidone/acrylic acid) and poly(N-vinyl-2-pyrrolidone/acrylamide) hydrogels for some metal-ion separation

机译：聚（N-乙烯基-2-吡咯烷酮/丙烯酸）和聚（N-乙烯基-2-吡咯烷酮/丙烯酰胺）水凝胶的辐射合成与表征

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摘要

Two different hydrogels, prepared from N-vinyl-2-pyrrolidone/acrylic acid (NVP/AAc) and N-vinyl-2-pyrrolidone/acrylamide (NVP/AAm), were studied for the separation and extraction of some heavy-metal ions from wastewater. The hydrogels were prepared by the gamma-radiation-induced copolymerization of the aforementioned binary monomer mixtures. Further modification was carried out for the NVP/AAc copolymer through an alkaline treatment to improve the swelling behavior by the conversion of the carboxylic acid groups into its sodium salts. The thermal stability and swelling properties were also investigated as functions of the N-vinyl-2-pyrrolidone content. The characterization and some selected properties of the prepared hydrogels were studied, and the possibility of their practical use in wastewater treatment for heavy metals such as Cu, Ni, Co, and Cr was investigated. The maximum uptake for a given metal was higher for a treated NVP/AAc hydrogel than for an untreated NVP/AAc hydrogel and was higher for an untreated NVP/AAc hydrogel than for an NVP/AAm hydrogel. (C) 2004 Wiley Periodicals, Inc. [References: 17]
机译：研究了由N-乙烯基-2-吡咯烷酮/丙烯酸（NVP / AAc）和N-乙烯基-2-吡咯烷酮/丙烯酰胺（NVP / AAm）制备的两种不同的水凝胶用于某些重金属离子的分离和提取来自废水。水凝胶通过上述二元单体混合物的γ辐射诱导的共聚反应制备。通过碱处理对NVP / AAc共聚物进行了进一步改性，以通过将羧酸基团转化为其钠盐来改善溶胀行为。还研究了热稳定性和溶胀性能作为N-乙烯基-2-吡咯烷酮含量的函数。研究了所制备水凝胶的特性和部分选定的性能，并研究了其在重金属如Cu，Ni，Co和Cr废水处理中的实际应用可能性。对于给定的金属，处理后的NVP / AAc水凝胶的最大吸收量高于未处理的NVP / AAc水凝胶，未处理的NVP / AAc水凝胶的最大吸收量大于NVP / AAm水凝胶。 （C）2004 Wiley Periodicals，Inc. [参考：17]

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