Article (Scientific journals)
Analogy in adsorption behavior of homopolyelectrolyte mixtures as compared to analogous diblock polyampholytes
Mahltig, Boris; Gohy, Jean-François; Jérôme, Robert et al.
2002In Journal of Polymer Science. Part B, Polymer Physics, 40 (4), p. 338-345
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Abstract :
[en] The adsorption behavior of aqueous mixtures of the homopolyelectrolytes poly(methacrylic acid) (PMAA) and poly[(dimethylamino)ethyl methacrylate] (PDMAEMA) was investigated in comparison with the adsorption of the ampholytic diblock copolymer PMAA-b-PDMAEMA on silicon substrates. Ellipsometry was used to determine the amount of adsorbed homopolyelectrolyte and diblock polyampholyte. Furthermore, the topography of the adsorbed polymers was investigated with atomic force microscopy (AFM) and compared with the structures observed in aqueous solutions by dynamic light scattering (DLS). For all types of investigated polyelectrolytic mixtures or the single polyampholyte, the adsorption was strongly influenced by the pH of the polymer solution. Although single homopolyelectrolytes showed only one maximum in adsorption according to their charge, the mixtures made from these homopolyelectrolytes showed two or three maxima. The third maximum near the isoelectric point of the mixture was assigned to a new species formed by aggregation of the two homopolyelectrolytes. Altogether, the adsorption behavior of the polyelectrolytic mixtures was in between the behavior of the pure homopolyelectrolytes and the analogous polyampholytes and therefore understandable from both of these polymer species.(C) 2002 John Wiley Sons, Inc.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Mahltig, Boris;  Institut für Polymerforschung, Dresden, 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)
Buchhamer, H. M.;  Institut für Polymerforschung, Dresden, Germany
Stamm, Manfred;  Institut für Polymerforschung, Dresden, Germany
Language :
English
Title :
Analogy in adsorption behavior of homopolyelectrolyte mixtures as compared to analogous diblock polyampholytes
Publication date :
15 February 2002
Journal title :
Journal of Polymer Science. Part B, Polymer Physics
ISSN :
0887-6266
eISSN :
1099-0488
Publisher :
John Wiley & Sons, Hoboken, United States - New Jersey
Volume :
40
Issue :
4
Pages :
338-345
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
SUPERNET program
Funders :
The DFG-Schwerpunkt “Polyelektrolyte” (grant IIC10-322 1009)
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
ESF - European Science Foundation [FR]
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