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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of copolymeric hydrogels using gamma radiation and their utilization in the removal of some dyes in wastwater
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Synthesis of copolymeric hydrogels using gamma radiation and their utilization in the removal of some dyes in wastwater

机译：利用伽马辐射合成共聚物水凝胶及其在废水中去除某些染料的用途

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摘要

Copolymer hydrogels were prepared by gamma-radiation copolymerization of maleic acid (MA) and 2-hydroxyethylacrylate (HEA) or acrylamide (AAm). The effect of AAm/MA and HEA/MA composition and irradiation dose on the gel fraction yield in the prepared hydrogels was determined. It was found that as the content of MA increased, the gel fraction yield decreased. The increase of irradiation dose resulted in increasing the crosslinked network structure and consequently the gel percent. The parameters of equilibrium swelling, maximum swelling, initial swelling rate, diffusion exponent, and diffusion coefficient of the hydrogels were calculated and evaluated, and it was found that water diffusion to the hydrogels generally was a non-Fickian diffusion type. Characterization of the prepared hydrogels was studied and accordingly the possibility of its practical use in the treatment of waste dyes from aqueous solution was studied. The effect of treatment time, the pH of the feed solution, initial feed concentration, and temperature on the dye uptake was also investigated. The maximum uptake of the investigated dyes was higher for HEA/MA hydrogel than that for AAm/MA hydrogel. (c) 2006 Wiley Periodicals, Inc.
机译：共聚物水凝胶是通过马来酸（MA）与丙烯酸2-羟乙基酯（HEA）或丙烯酰胺（AAm）的γ-辐射共聚制备的。确定了AAm / MA和HEA / MA的组成以及辐照剂量对制备的水凝胶中凝胶分数收率的影响。发现随着MA含量的增加，凝胶级分产率降低。辐照剂量的增加导致交联网络结构的增加，从而导致凝胶百分比的增加。计算并评估了水凝胶的平衡溶胀，最大溶胀，初始溶胀速率，扩散指数和扩散系数的参数，发现水向水凝胶的扩散通常是非菲克式扩散类型。研究了制备的水凝胶的表征，因此研究了其在水溶液中处理废染料中的实际应用的可能性。还研究了处理时间，进料溶液的pH，初始进料浓度和温度对染料吸收的影响。 HEA / MA水凝胶的最大吸收量高于Aam / MA水凝胶。 （c）2006年Wiley Periodicals，Inc.

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