Adsorption behavior and cross-linking of EHEC and HM-EHEC at hydrophilic and hydrophobic modified surfaces monitored by SPR and QCM-D

被引：37

作者：

Hedin, Jesper ^{[1
]}

Lofroth, Jan-Erik ^{[1
]}

Nyden, Magnus ^{[1
]}

机构：

[1] Chalmers, Dept Biol & Chem Engn, SE-41296 Gothenburg, Sweden

来源：

LANGMUIR | 2007年 / 23卷 / 11期

关键词：

D O I：

10.1021/la063406j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption behavior of ethyl(hydroxyethyl) cellulose EHEC and hydrophobically modified EHEC (HM-EHEC) at hydrophilic and hydrophobic surfaces has been studied using surface plasmon resonance (SPR) and quartz crystal microbalance with dissipation monitoring (QCM-D) methods. The adsorbed amounts measured with the different methods were different due to large amounts of water in the films. The slow adsorption process made it reasonable to assume a continuous polymer reconfiguration process at the surface. This was mostly seen for HM-EHEC at the hydrophobic surface, where a more flexible structure was adopted during the adsorption process. A cross-linking agent was seen to truly interpolymer cross-link EHEC at the hydrophilic surface and HM-EHEC at the hydrophobic surface. For EHEC at a hydrophobic surface and for HM-EHEC at a hydrophilic surface, the polymers adsorbed in an individually phase-separated manner, making an interpolymer cross-linking reaction unsuccessful.

引用

页码：6148 / 6155

页数：8