Temperature-dependent adsorption of cellulose ethers on silica and hydrophobized silica immersed in aqueous polymer solution

被引：8

作者：

Bodvik, Rasmus ^{[1
,2
]}

Thormann, Esben ^{[1
,2
]}

Karlson, Leif ^{[3
]}

Claesson, Per M. ^{[1
,2
]}

机构：

[1] Royal Inst Technol, Dept Chem Surface & Corros Sci, SE-10044 Stockholm, Sweden

[2] Inst Surface Chem, SE-11486 Stockholm, Sweden

[3] Akzo Nobel Funct Chem AB, SE-44485 Stenungsund, Sweden

来源：

RSC ADVANCES | 2011年 / 1卷 / 02期

基金：

瑞典研究理事会;

关键词：

QUARTZ-CRYSTAL MICROBALANCE; AIR-WATER-INTERFACE; HYDROXYPROPYL METHYLCELLULOSE; SURFACE-PROPERTIES; OPTICAL-PROPERTIES; THERMAL GELATION; SOLID INTERFACES; IONIC-STRENGTH; ELLIPSOMETRY; ETHYL(HYDROXYETHYL)CELLULOSE;

D O I：

10.1039/c1ra00235j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The influence of temperature on adsorption and the adsorbed layer properties of methylcellulose (MC) and hydroxypropylmethylcellulose (HPMC) were investigated on silica and hydrophobized silica surfaces immersed in aqueous polymer solution. To achieve a concise understanding a quartz crystal microbalance with dissipation, ellipsometry, and atomic force microscopy imaging were employed. These techniques provide complimentary information on the structure, mass and viscoelastic properties of the polymer layers. Adsorption was first allowed at 25 degrees C. Next, the temperature was increased step-wise up to 50 degrees C and then decreased again. This procedure highlights the temperature dependence of the adsorbed material, as well as the hysteresis in the adsorption due to temperature cycling. A change in temperature not only affects the adsorbed amount, but also the properties of the layer as illustrated by measurements of its water content, thickness and viscoelasticity.

引用

页码：305 / 314

页数：10

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