[en] The adsorption of the diblock polyampholyte poly (methacrylic acid)-block-poly((di-methylamino)ethyl methacrylate) from aqueous solution on silicon substrates was investigated as a function of polymer concentration and pH. Dynamic light scattering and electrokinetic measurements were used to characterize the polyampholyte in solution. The amount of polymer adsorbed was determined by ellipsometry and lateral structures of the polymer layer were investigated by scanning force microscopy. The amount of polymer adsorbed was found to be strongly influenced by the pH of the polymer solution, while the size of the polyampholyte micelles adsorbed on the surface was hardly affected by pH during adsorption. From investigations by scanning force microscopy well-seperated micelles were seen in the dried monolayers adsorbed directly from solution. The structures at the surface are correlated to structures in solution, and the adsorbed amount depends on the relative charge of the micelles and the surface.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Mahltig, Boris; Max-Planck-Institut für Polymerforschung, Mainz, Germany
Gohy, Jean-François; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Bellmann, C.; Institut für Polymerforschung, Dresden, Germany
Stamm, Manfred; Institut für Polymerforschung, Dresden, Germany
Language :
English
Title :
Adsorption of block polyampholyte micelles in monolayers at the silicon water interface
DFG - Deutsche Forschungsgemeinschaft BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Commentary :
The authors acknowledge Colloid & Polymer Science (Springer) for allowing them to archive this paper..The original publication is available at www.springerlink.com/content/x2vh6y2ltrnmvgnk/?p=6ecc69aa72154204aa653014a33908c4π=