Water distribution in multilayers of weak polyelectrolytes

The water localization in thin polyelectrolyte multilayers assembled from poly(acrylic acid) and poly(allylamine hydrochloride) was investigated with neutron reflectivity in an atmosphere of controlled humidity and with bulk water. Water was found to be distributed asymmetrically within the multilay...

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Bibliographische Detailangaben
Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 22(2006), 11 vom: 23. Mai, Seite 5137-43
1. Verfasser: Tanchak, Oleh M (VerfasserIn)
Weitere Verfasser: Yager, Kevin G, Fritzsche, Helmut, Harroun, Thad, Katsaras, John, Barrett, Christopher J
Format: Aufsatz
Sprache:English
Veröffentlicht: 2006
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Acrylic Resins Electrolytes Polyamines Water 059QF0KO0R polyallylamine 30551-89-4 carbopol 940 4Q93RCW27E
Beschreibung
Zusammenfassung:The water localization in thin polyelectrolyte multilayers assembled from poly(acrylic acid) and poly(allylamine hydrochloride) was investigated with neutron reflectivity in an atmosphere of controlled humidity and with bulk water. Water was found to be distributed asymmetrically within the multilayer and to localize preferentially at the polymer surface. The diffusion of water into the multilayer did not completely penetrate to the substrate, but instead there appeared to be an exclusion zone near the Si substrate. These results help to explain previous observations of anomalous water transport kinetics in weak polyelectrolyte systems
Beschreibung:Date Completed 19.09.2007
Date Revised 28.11.2016
published: Print
Citation Status MEDLINE
ISSN:1520-5827