Competitive adsorption of polymers on metal nanoparticles

被引：12

作者：

David, Kasi

Dan, Nily

Tannenbaum, Rina

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Drexel Univ, Dept Chem & Biol Engn, Philadelphia, PA 19104 USA

[3] Technion Israel Inst Technol, Dept Chem Engn, IL-32000 Haifa, Israel

来源：

SURFACE SCIENCE | 2007年 / 601卷 / 08期

关键词：

polymer adsorption; competitive adsorption; metal nanoparticles; thermal properties; diblock co-polymers;

D O I：

10.1016/j.susc.2007.01.054

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 investigate the effect of system properties and adsorption sequence on competitive adsorption of poly(methyl methacrylate) (PMMA) and polystyrene (PS) on narrowly polydispersed cobalt (Co) nanoparticles (D similar to 27 nm). The adsorbed layer composition is studied using thermo-gravimetric analysis (TGA). We find that adsorbed layers of PS are completely displaced by PMMA when the solvent is a common good solvent. An adsorbed layer of only PMMA is also obtained through competitive adsorption from a common good solvent. However, in a selective solvent that is poor for PS, sequential adsorption leads to the formation of mixed layers. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1781 / 1788

页数：8

共 48 条

[1]

Allara D. L., 1980, POLYM SCI TECHNOL B, V12B, P751

[2] IRREVERSIBLE ADSORPTION OF A POLYMER MELT ON A COLLOIDAL PARTICLE [J].