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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >(Sodium alginate/acrylamide) semi-interpenetrating polymer networks and their usability on removal of lead, cadmium, nickel ions
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(Sodium alginate/acrylamide) semi-interpenetrating polymer networks and their usability on removal of lead, cadmium, nickel ions

机译：（藻酸钠/丙烯酰胺）半互穿聚合物网络及其在去除铅，镉，镍离子中的可用性

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摘要

In this study, (sodium alginate (NaAlg)/acrylamide (AAm)) interpenetrating polymer networks (IPN) have been prepared at three different compositions, where the sodium alginate composition varies 1, 2, and 3% (w/v) in 50% (w/v) acrylamide solutions. These solutions have been irradiated with a 60 Co-gamma source at different doses. The percent conversion was determined gravimetrically and 100% gelation was achieved at the 10.0 kGy dose. The swelling results at pH 7.0 and 9.0 indicated that (NaAlg/AAm)3IPN hydrogel, containing 3% NaAlg showed maximum % swelling in water, with swelling increasing in the order of Ni2+ > Cd2+ > Pb2+ . Diffusion in aqueous solutions of metal ions within (NaAlg/AAm)IPN hydrogels was found to be Fickian character. Diffusion coefficients of (NaAlg/AAm)IPN hydrogels in water and aqueous solutions of metal ions were calculated. The maximum weight loss temperature and half life temperature for NaAlg, PAAm, (NaAlg/AAm)IPN and (NaAlg/AAm)IPN-metal ion systems were found from thermal analysis studies. In the adsorption experiments, the efficiency of (NaAlg/AAm)IPN hydrogels to adsorb nickel, cadmium and lead ions from water was studied. (NaAlg/AAm)IPN hydrogels showed different adsorption for different aqueous solution of metal ion at pH 7.0. Adsorption isotherms were constructed for the (NaAlg/AAm)IPN-metal ion systems. S type adsorption in the Giles classification system was found.
机译：在这项研究中，已经制备了三种不同组成的（藻酸钠（NaAlg）/丙烯酰胺（AAm））互穿聚合物网络（IPN），其中藻酸钠的组成在50中变化为1、2和3％（w / v） ％（w / v）的丙烯酰胺溶液。这些溶液已经用不同剂量的60Co-γ射线源照射过。用重量分析法确定百分转化率，在10.0kGy剂量下达到100％胶凝。 pH 7.0和9.0时的溶胀结果表明，含有3％NaAlg的（NaAlg / AAm）3IPN水凝胶在水中显示出最大溶胀％，且溶胀按Ni2 +> Cd2 +> Pb2 +的顺序增加。发现金属离子在（NaAlg / AAm）IPN水凝胶中的扩散是Fickian特性。计算了（NaAlg / AAm）IPN水凝胶在水和金属离子水溶液中的扩散系数。通过热分析研究发现了NaAlg，PAAm，（NaAlg / AAm）IPN和（NaAlg / AAm）IPN金属离子系统的最大失重温度和半衰期温度。在吸附实验中，研究了（NaAlg / AAm）IPN水凝胶从水中吸附镍，镉和铅离子的效率。 （NaAlg / AAm）IPN水凝胶对pH 7.0的不同金属离子水溶液显示出不同的吸附。构建了（NaAlg / AAm）IPN-金属离子系统的吸附等温线。在Giles分类系统中发现了S型吸附。

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