Selective Adsorption of Dyes and Surfactants with Cyclodextrin Containing Polymers

含环糊精聚合物选择性吸附染料和表面活性剂

基本信息

批准号：
10680123
负责人：
IHARA Yasuji
金额：
$ 1.92万
依托单位：
Yamaguchi Prefectural University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

(1)The adsorption isotherms of acid dyes onto polymers containing cyclodextrin (CD) were measured in aqueous solution. The adsorption affinities of dyes with water-soluble polymer increased with increases in the length of alkly chain units. The adsorption affinities of dyes with water-insoluble polymer increased with increases in the ratio of hydrophobic components. The relationship between adsorption affinities and OSQR properties were also discussed in order to determine preferred adsorption behaviors of different CD polymers and acid dyes.(2)The adsorption isotherms of nonionic surfactants onto polymer adsorbent containing CDs were measured in aqueous solution. The adsorption affinities for nonionic surfactants decrease with increases in the length of oxyethylene units in the adsorbates. The adsorption affinities for sodium dodecylbenzene sulfonate (NaDBS) in nonionic surfactants decreased with increases in the ratio of nonionic surfactant to NaDBS.(3)The inclusion complex formation of methyl orange and its homologs with CDs in aqueous solution was investigated by spectrophotometric measurements at different temperatures. It was found that α-and β-CDs formed 1 : 1 complexes, but γ-CD formed a 1 : 2 complex with dye molecules. The increases of the alkyl chain length in the dye molecules increased the binding constant. The entropy and enthalpy changes were calculated for the complex formation and contribution of entropy to the process was discussed.(4)The inclusion complex formation of alkyl slufonate and its related compounds with CDs and double CDs in aqueous solution was investigated by fluorescence spectrum measurements at different temperatures. The increases of the alkyl chain length in the double CDs decreased the binding constant. The fitness of the alkyl sulfonate to the cavity of CD was suggested to affect the binding constant.

（1）在水溶液中测量了酸染料上含有环糊精（CD）的聚合物上的吸附等温线。染料与水溶性聚合物的吸附亲和力随碱链单元的长度增加而增加。染料与水不溶的聚合物的吸附亲和力随疏水成分比的增加而增加。还讨论了吸附亲和力与OSQR特性之间的关系，以确定不同CD聚合物和酸染料的首选吸附行为。非离子表面活性剂的吸附亲和力随着吸附物中氧乙烯单元长度的增加而降低。非离子表面活性剂中十二烷基苯磺酸钠（NADBS）的吸附亲和力随着非离子表面活性剂与NADB的比率的增加而降低。（3）通过分析测量在不同的测量中，研究了甲基橙甲基橙及其与CDS溶液中的同种溶液中的甲基化复合物。发现α和β-CD形成1：1复合物，但是γ-CD与染料分子形成了1：2的复合物。染料分子中烷基链长度的增加增加了结合常数。讨论了针对熵对该过程的复杂形成和贡献计算的熵和焓变。（4）（4）通过在不同温度下，通过荧光光谱测量荧光测量，研究了烷基氯酸酯及其与CDS的相关化合物的包含复合物形成。双CD中烷基链长度的增加降低了结合常数。建议烷基磺酸盐对CD腔的适应性影响结合常数。