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

doi:10.7517/j.issn.1674-0475.2012.06.420

Abstract

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

CLC Number:

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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