Study of the kinetics of mushroom-to-brush transition of charged polymer chains

被引：53

作者：

Liu, Guangming ^{[1
]}

Yan, Lifeng ^{[1
]}

Chen, Xi ^{[1
]}

Zhang, Guangzhao ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

POLYMER | 2006年 / 47卷 / 09期

关键词：

polymer brush; kinetics of grafting; quartz crystal microbalance;

D O I：

10.1016/j.polymer.2006.02.091

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The grafting of thiol-terminated poly[(2-dimethylamino)ethyl methacrylate] (HS-PDMEM) chains to a gold surface front a solution was investigated with quartz crystal microbalance with dissipation (QCM-D) in real time. The frequency and energy dissipation responses revealed a three-regime-kineties of the grafting. The chains are quickly grafted in regime I forming a random Mushroom. In regime II, the grafted chains have a rearrangement and form an ordered mushroom structure. The grafting is accelerated in regime III. As the grafting density increases. the chains form brushes. From regime II to III. the mushroorn-to-brush transition Occurs. The results were further supported by atomic force microscopy (AFM) iniagines. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：3157 / 3163

页数：7

共 62 条

[1] Adsorption kinetics of a hydrophobic-hydrophilic diblock polyelectrolyte at the solid-aqueous solution interface:: A slow birth and fast growth process [J].