Montmorillonite-polycation multilayers incorporated in polyacrylamide

被引:2
|
作者
Starodubtsev, S. G. [1 ]
Lavrentyeva, E. K. [1 ]
Shtykova, E. V. [2 ]
Dembo, K. A. [2 ]
Volkov, V. V. [2 ]
机构
[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia
[2] Russian Acad Sci, Inst Crystallog, Moscow 117333, Russia
基金
俄罗斯基础研究基金会;
关键词
Clay; Poly(4-vinylpyridine); Organoclay; Polymer gel; Small-angle X-ray scattering; CHARGED POLY(ACRYLAMIDE) GELS; X-RAY-SCATTERING; CATIONIC POLYELECTROLYTES; ADSORPTION PROPERTIES; HYDROGEL COMPOSITES; SMECTIC ARRANGEMENT; IOTA-CARRAGEENAN; IN-SITU; BENTONITE; SURFACTANT;
D O I
10.1016/j.clay.2009.06.020
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
A two-stage synthesis has been developed for the first time to obtain montmorillonite-poly(1-methyl-4-vinylpyridinium) multilayers incorporated in polyacrylamide gels. Firstly, hexadecylpyridinium montmorillonite was entrapped in the polyacrylamide gel during polymerization. In the second stage the cationic surfactant was removed and replaced by alkylated poly(4-vinylpyridine). The products in each stage of preparation were characterized by small-angle X-ray scattering (SAXS). SAXS revealed highly ordered multilayers of polycation-montmorillonite particles in the gel. This structure could not be obtained by mixing the solution of the polycation salt with the aqueous dispersion of montmorillonite or with the dispersion entrapped in the gel. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:88 / 94
页数:7
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