Stimuli-responsive poly(ethylene oxide)-b-poly(2-vinylpyridine)-b-poly(ethylene oxide) triblock copolymers and complexation with poly(acrylic acid) at low pH

被引：11
|
作者：
Karanikolas, A. [1 ]
Tsolakis, P. [2 ]
Bokias, G. [2 ]
Tsitsilianis, C. [1 ]
机构：
[1] Univ Patras, Dept Chem Engn, GR-26504 Patras, Greece
[2] Univ Patras, Dept Chem, GR-26504 Patras, Greece
来源：
EUROPEAN PHYSICAL JOURNAL E | 2008年 / 27卷 / 03期
关键词：
83; 80; Uv Block copolymers; 82; 70; Uv Surfactants; micellar solutions; vesicles; lamellae; amphiphilic systems; (hydrophilic and hydrophobic interactions); Rs Polymer solutions;
D O I：
10.1140/epje/i2008-10386-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The self-organization of the double hydrophilic triblock copolymer poly(ethylene oxide)-b-poly(2-vinylpyridine)-b-poly(ethylene oxide), PEO-b-P2VP-b-PEO, was investigated in dilute aqueous solution under several experimental conditions using turbidimetry, as well as static and dynamic light scattering. As a result of the temperature-sensitive properties of the end PEO blocks and the p H-responsive properties of the middle P2VP block, the formation of large star-like micellar nanostructures is observed at high p H, while at low p H, but in the presence of salt and at high temperature, flower-like micelles are formed. Moreover, the viscosimetric and dynamic light scattering studies at low p H revealed that micelle-like nanostructures are formed upon mixing the triblock copolymer with poly(acrylic acid), PAA, due to hydrogen bonding interpolymer complexation.
引用
收藏
页码：335 / 343
页数：9
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