Neutron spin echo studies on dynamics of polymeric micelles

被引：3

作者：

Kanaya, T ^{[1
]}

Watanabe, H

Matsushita, Y

Takeda, T

Seto, H

Nagao, M

Fujii, Y

Kaji, K

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto Fu, Uji 6110011, Japan

[2] Univ Tokyo, Inst Solid State Phys, Tokyo 1068666, Japan

[3] Hiroshima Univ, Fac Integrated Arts & Sci, Higashihiroshima 7398521, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 8-9期

关键词：

polymers; neutron scattering; diffusion; transport properties;

D O I：

10.1016/S0022-3697(99)00115-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Neutron spin echo measurements were performed on polymeric micelles consisting of deuterated polystyrene (d-PS)-polyisoprene (PI) diblock copolymers in dilute and concentrated solutions. The scattering length density of the core of the micelles matched to the solvent so that dynamics of polymer chains in the corona were measured. The observed intermediate scattering functions in the dilute solution were analyzed by the theory for tethered chains proposed by de Gennes. In the concentrated solutions, motional slowing down was observed, which may be caused not only by increase of the viscosity but also by decrease of the osmotic compressibility. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1367 / 1369

页数：3

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