β－环糊精聚合物对亚甲基蓝染料分子的吸附对比研究

摘要

为了更好研究环糊精与环氧氯丙烷交联聚合物水凝胶（ CD－EPI）的吸附性能，以β－CD－EPI以及羧甲基化的β－环糊精聚合物水凝胶（ CM－β－CD－EPI）为吸附剂，对比研究了不同吸附条件下二者对亚甲基蓝（ MB）染料分子的吸附性能，得出：对于带电的MB分子来说， CM－β－CD－PAM较β－CD－PAM具有更高的吸附速率；中性或者碱性环境较酸性环境更适合这两种吸附剂对MB的吸附；由于环糊精的空腔包结作用，高温不利于吸附剂对MB的吸附。%In order to investigate the adsorption performance of cyclodextrin-epichlorohydrin polymers ( CD-EPI) ,β-CD-EPI and its carboxymethyl derivative ( CM-β-CD-EPI) as adsorbents were used to adsorb methylene blue ( MB) in aqueous solution.The results showed that CM-β-CD-PAM had higher adsorption performance for MB than β-CD-PAM.Better adsorption of MB was obtained in neutral and basic media than in acidic media.Because of inclusion complexes between adsorbents and MB, a higher temperature was unfavorable for the adsorption of MB.