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Probing polymeric stabilization in nonaqueous media by direct measurements
YKI, Institute for Surface Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface Chemistry.ORCID iD: 0000-0001-7496-1101
2000 (English)In: Journal of The American Ceramic Society, ISSN 0002-7820, E-ISSN 1551-2916, Vol. 83, no 1, p. 217-219Article in journal (Refereed) Published
Abstract [en]

The steric repulsion induced by adsorbed layers of the commercial dispersant Hypermer KD3 has been probed by direct measurements in decalin. The forces are long range (commencing at 30-40 nm) and repulsive, and the distance dependence can be modeled with a simple scaling theory expression valid for polymer brushes. We obtain layer thicknesses of similar to 9-15 nm for the compressed layers, depending on KD3 concentration, whereas the undisturbed layers have a thickness of similar to 23-24 nm, independent of polymer concentration. Comparison of the measured interaction lengths with previous layer thickness estimates based on rheological studies shows that the polymer layers are compressed in dense suspensions.

Place, publisher, year, edition, pages
2000. Vol. 83, no 1, p. 217-219
Keywords [en]
rheological properties, suspensions, consolidation, interface, surfaces, solvent
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-19605ISI: 000085764000033OAI: oai:DiVA.org:kth-19605DiVA, id: diva2:338297
Note
QC 20100525 NR 20140804Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Blomberg, Eva

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