| 定量研究环糊精聚合物包合作用的新方法 |
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| 引用本文： | 于恒达,刘建佳,李莉,郭旭虹,王杰.定量研究环糊精聚合物包合作用的新方法[J].华东理工大学学报(自然科学版),2012,38(2):133-136. |
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| 作者姓名： | 于恒达 刘建佳 李莉 郭旭虹 王杰 |
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| 作者单位： | 华东理工大学化工学院,上海,200237 |
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| 基金项目： | 浦江人才资助项目，华东理工大学优秀青年教师基金资助项目 |
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| 摘 要： | 通过聚合物接枝改性的方法制备了β-环糊精改性聚丙烯酸(PAAβCDen)和丹磺酰基团改性聚丙烯酸(PAADSen),并用二维氢核磁、流变学、紫外-可见分光光度法等方法对接枝于聚合物上的环糊精主客体相互作用进行了定量研究。结果表明:接枝于聚丙烯酸链上的β-环糊精和丹磺酰基团之间能够形成主客体包合结构,从而使PAAβCDen和PAADSen之间产生交联,并且首次采用紫外-可见分光光度法测得接枝于不同聚合物链上环糊精基团和丹磺酰基团之间的结合常数为(27.5±3)L/mol,远小于自由状态下β-环糊精与丹酰胺之间的结合常数((103±5)L/mol)。
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| 关 键 词： | 环糊精聚合物 包合作用 新方法 |
Novel Method to Quantitatively Study Inclusive Association of Cyclodextrin Polymer |
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| YU Heng-da,LIU Jian-jia,LI Li,GUO Xu-hong,WANG Jie.Novel Method to Quantitatively Study Inclusive Association of Cyclodextrin Polymer[J].Journal of East China University of Science and Technology,2012,38(2):133-136. |
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| Authors: | YU Heng-da LIU Jian-jia LI Li GUO Xu-hong WANG Jie |
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| Institution: | (School of Chemical Engineering,East China University of Science and Technology, Shanghai 200237,China) |
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| Abstract: | Both β-cyclodextrin(PAAβCDen) and dansyl modified poly(acrylic acid)s(PAADSen) were synthesized respectively by polymer grafting reaction.The inclusive association between PAAβCDen and PAADSen was studied quantitatively by 2D 1H-NMR,rheology and UV-Vis spectroscopy.The results showed that the crosslinking between PAAβCDen and PAADSen was formed by host-guest interaction between β-cyclodextrin and dansyl substituents.The association constant between β-cyclodextrin and dansyl substituents in PAA was determined as(27.5±3) L/mol for the first time,which was much smaller than that of free β-cyclodextrin with dansyl amide((103±5) L/mol). |
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| Keywords: | cyclodextrin polymer inclusive interaction novel method |
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