Unusual dynamical arrest in polymer grafted nanoparticles

被引：27

作者：

Kandar, A. K. ^{[1
]}

Srivastava, S. ^{[1
]}

Basu, J. K. ^{[1
]}

Mukhopadhyay, M. K. ^{[2
]}

Seifert, S. ^{[3
]}

Narayanan, S. ^{[3
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 130卷 / 12期

关键词：

liquid theory; nanoparticles; polymer blends; polymer solutions; STAR POLYMERS; COLLOIDAL PARTICLES;

D O I：

10.1063/1.3090484

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：

We present results of temperature dependent measurements of dynamics of polymer grafted nanoparticles with high grafting density with star polymerlike morphology. We observed for the low grafting density and hence low functionality sample, a dynamically arrested state with lowering of temperature, similar to what was conjectured earlier. However the high grafting density sample shows liquidlike relaxation at all measured temperatures. Possible origin of dynamical arrest in the two grafting density sample is discussed.

引用

页数：5

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