SANS study of three-layer micellar particles

被引：0

作者：

J. Pleštil

H. Pospíšil

A.I. Kuklin

R. Cubitt

机构：

[1] Institute of Macromolecular Chemistry,

[2] Heyrovsky Sq. 2,undefined

[3] 162 06 Prague,undefined

[4] Czech Republic,undefined

[5] Frank Laboratory of Neutron Physics,undefined

[6] JINR,undefined

[7] 141 980 Dubna,undefined

[8] Russia,undefined

[9] Institut Laue–Langevin,undefined

[10] 38042 Grenoble,undefined

[11] France,undefined

来源：

Applied Physics A | 2002年 / 74卷

关键词：

PACS: 61.12.Ex; 61.25.Hq;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Three-layer nanoparticles were prepared by polymerization of methyl methacrylate (MMA) in aqueous micellar solutions of poly(methyl methacrylate)–block-poly(methacrylic acid) (PMMA–b-PMA) and polystyrene–block-poly(methacrylic acid) (PS–b-PMA). The resulting polymer forms a layer on the core surface of the original micelles. SANS curves were fitted using an ellipsoidal (PMMA/PMMA/PMA) or spherical (PS/PMMA/PMA) model for the particle core. The particle size (for the presented series of the PMMA/PMMA/PMA particles, the core semiaxes ranged from 87 to 187 Å and the axis ratio was about 6) can be finely tuned by variation of monomer concentration. Time-resolved SANS experiments were carried out to describe the growth of the PS/PMMA/PMA particles during polymerization.

引用

页码：s405 / s407

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