全亲水丙烯酰胺/丙烯酸类梳型聚合物的合成及双重响应性聚集行为

doi:10.7517/j.issn.1674-0475.2012.06.420

影像科学与光化学 ›› 2012, Vol. 30 ›› Issue (6): 420-428.DOI: 10.7517/j.issn.1674-0475.2012.06.420

全亲水丙烯酰胺/丙烯酸类梳型聚合物的合成及双重响应性聚集行为

岳国亮^1,2, 张玉玺¹, 吴飞鹏¹

1. 中国科学院理化技术研究所, 北京100190;
2. 中国科学院研究生院, 北京100049

收稿日期:2012-04-19 修回日期:2012-05-18 出版日期:2012-11-15 发布日期:2012-11-15
通讯作者: 吴飞鹏

Synthesis and Dual-Responsive Assembling Behavior of Double Hydrophilic Acrylamide/Acrylic Acid Comb-Like Polymers

YUE Guo-liang^1,2, ZHANG Yu-xi¹, WU Fei-peng¹

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received:2012-04-19 Revised:2012-05-18 Online:2012-11-15 Published:2012-11-15

摘要/Abstract

摘要： 以引发剂量的壳聚糖 (CS)为母体骨架,通过与丙烯酰胺 (AM)和丙烯酸 (AA)连续的自由基聚合反应,制备了一种全亲水丙烯酰胺/丙烯酸类梳型聚合物 (CS-PAM/PAA).聚合物中丙烯酰胺和丙烯酸的组成比例可通过控制反应时间调节,并可通过核磁共振碳谱定量计算.该聚合物具有全亲水嵌段共聚物的特性,在水溶液中具有良好的pH响应性和离子响应性.聚合物溶于水并在酸性条件下自组装形成囊泡结构的聚集体,多价金属离子(如Tb³⁺离子)也可以引起聚合物的响应聚集.

关键词: 丙烯酰胺/丙烯酸, 全亲水嵌段共聚物, 梳型, pH响应, 金属离子响应

Abstract: Double hydrophilic acrylamide/acryl acid comb-like polymers (CS-PAM/PAA) were successfully developed via successive radical polymerization of acrylamide (AM) and acrylic acid (AA) in which triggered amount chitosan (CS) was employed as backbone. The composition of AM and AA in polymers could be regulated by controlling the reaction time, while the ratio was elucidated roughly by ¹³CNMR in a quantitative way. The polymers showed the typical properties of double hydrophilic block copolymers. Both good pH sensitivity and ion responsiveness were displayed by the polymers aqueous solutions. CS-PAM/PAA could molecularly dissolve in water and self-assemble into vesicular aggregates in the acid condition. In addition, the responsive assembling behavior of polymers could also be induced by multivalent metal ions (e.g. Tb³⁺).

Key words: acrylamide/acryl acid, double hydrophilic block copolymers, comb-like, pH-sensitive, metal ion responsive

中图分类号:

岳国亮, 张玉玺, 吴飞鹏. 全亲水丙烯酰胺/丙烯酸类梳型聚合物的合成及双重响应性聚集行为[J]. 影像科学与光化学, 2012, 30(6): 420-428.

YUE Guo-liang, ZHANG Yu-xi, WU Fei-peng. Synthesis and Dual-Responsive Assembling Behavior of Double Hydrophilic Acrylamide/Acrylic Acid Comb-Like Polymers[J]. Imaging Science and Photochemistry, 2012, 30(6): 420-428.

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全亲水丙烯酰胺/丙烯酸类梳型聚合物的合成及双重响应性聚集行为

Synthesis and Dual-Responsive Assembling Behavior of Double Hydrophilic Acrylamide/Acrylic Acid Comb-Like Polymers

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