Adsorption of poly(4-vinyl pyridine) unimers into polystyrene-block-poly(acrylic acid) micelles in ethanol due to hydrogen bonding

被引：47

作者：

Zhang, WQ ^{[1
]}

Shi, LQ ^{[1
]}

An, YL ^{[1
]}

Wu, K ^{[1
]}

Gao, LC ^{[1
]}

Liu, Z ^{[1
]}

Ma, RJ ^{[1
]}

Meng, QB ^{[1
]}

Zhao, CJ ^{[1
]}

He, BL ^{[1
]}

机构：

[1] Nankai Univ, N&T Joint Acad, Inst Polymer Chem, State Key Lab Funct Polymer Mat Adsorpt & Separat, Tianjin 300071, Peoples R China

来源：

MACROMOLECULES | 2004年 / 37卷 / 08期

关键词：

D O I：

10.1021/ma0499775

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The adsorption of poly(4-vinyl pyridine) (P4VP) unimers into spherical core-shell micelles self-assembled by polystyrene-block-poly(acrylic acid) (PS200-b-PAA(78)) in ethanol is studied by a combination of static light scattering (SLS) and dynamic light scattering (DLS). P4VP unimers with a coil size of ca. 7.9 nm can be first absorbed into the PS-b-PAA spherical core-shell micelles with a hydrodynamic diameter of 79.9 nm and then penetrate into the shell of the micelles to form hydrogen-bonded micelle-unimers complexes in ethanol. During the adsorption, the hydrodynamic diameter and gyration radius of the micelle-unimers complexes decrease first and then stay almost unchanged when P4VP solution in ethanol is added into the PS-b-PAA micelle solution. It is also found that the structure of the micelle-unimers complexes remains spherical but becomes smaller and denser than that of the PS-b-PAA micelles after absorption of P4VP unimers.

引用

页码：2924 / 2929

页数：6

共 49 条

[1] DETERMINATION OF THE MICELLE ARCHITECTURE OF POLYSTYRENE POLY(4-VINYLPYRIDINE) BLOCK-COPOLYMERS IN DILUTE-SOLUTION [J].