pH-Sensitive Adsorption Behavior of Polymer Particles at the Air-Water Interface

被引：21

作者：

Fujii, Syuji ^{[1
]}

Mouri, Emiko ^{[3
]}

Akiyama, Ko ^{[1
]}

Nakayama, Saori ^{[1
]}

Uda, Kyohei ^{[4
]}

Nakamura, Yoshinobu ^{[1
,2
]}

Matsuoka, Hideki ^{[4
]}

机构：

[1] Osaka Inst Technol, Fac Engn, Dept Appl Chem, Asahi Ku, 5-16-1 Omiya, Osaka 5358585, Japan

[2] Osaka Inst Technol, Nanomat Microdevices Res Ctr, Asahi Ku, 5-16-1 Omiya, Osaka 5358585, Japan

[3] Kyushu Inst Technol, Fac Engn, Dept Appl Chem, 1-1 Sensui, Kitakyushu, Fukuoka 8048550, Japan

[4] Kyoto Univ, Dept Polymer Chem, Nishikyo Ku, Kyoto 6158510, Japan

来源：

LANGMUIR | 2017年 / 33卷 / 06期

关键词：

STABILIZED POLYSTYRENE LATEX; X-RAY; NANOPARTICLE MONOLAYERS; SURFACE-TENSION; TEMPERATURE; FORCES; LAYER; BRUSH; NANOSTRUCTURE; REFLECTIVITY;

D O I：

10.1021/acs.langmuir.6b03895

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

pH-Sensitive adsorption of polymer particles bearing poly[2-(dimethylamino)ethyl methacrylate] hairs at the air water interface was investigated using a surface tensiometer, a Langmuir Blodgett trough, and an X-ray reflectometer. We clarified that the particles are adsorbed at the interface at basic pH; by contrast, at acidic pH, only a small number of particles are adsorbed, whereas the majority are dispersed in the water phase. X-ray reflectometry analysis revealed that a particle monolayer was formed at the air water interface, which was packed densely under increasing surface pressure, as determined by the electron density profile change. The contact angles of the particles at the air water interface were estimated to be 29 and 34 at pH 3 and 10, respectively, by direct-visualization of the air water interface position of the particles using a polycyanoacrylate trapping method.

引用

页码：1451 / 1459

页数：9

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