Rheology control by modulating hydrophobic and inclusion associations in modified poly(acrylic acid) solutions

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dc.contributor.authorGuo, X.
dc.contributor.authorAbdala, A.
dc.contributor.authorMay, B.
dc.contributor.authorLincoln, S.
dc.contributor.authorKhan, S.
dc.contributor.authorPrud'homme, R.
dc.date.issued2006
dc.description.abstractThe rheology of modified poly(acrylic acid) (PAA) solutions can be tuned by controlling the inclusion interactions between α-cyclodextrins and alkyl hydrophobes. We demonstrate three modes of control: (1) using free cyclodextrins (CD) to displace hydrophobe-hydrophobe association in hydrophobically modified poly(acrylic acid) (HMPAA) polymers-which reduces fluid viscosity, (2) using competitive inclusion interactions where stronger SDS:CD binding can be used to 'unmask' CD:hydropobe inclusion interactions-which increases viscosity, and (3) employing HMPAA inclusion interactions with CD groups grafted to PAA chains (CDPAA)-which produces higher viscosities than purely hydrophobic association systems at the same concentration. The inclusion association between alkyl side-group in HMPAA and CD, either free or grafted onto PAA, obeys a 1-to-1 stoichiometry at low polymer concentrations (<1 wt%). In contrast to purely hydrophobically associating polymers, the CD:hydrophobe interaction is only binary, and, therefore, these associated networks should be ideal model systems to test theoretical predictions for associative fluids. © 2006 Elsevier Ltd. All rights reserved.
dc.description.statementofresponsibilityXuhong Guo, Ahmed A. Abdala, Bruce L. May, Stephen F. Lincoln, Saad A. Khan and Robert K. Prud'homme
dc.description.urihttp://www.elsevier.com/wps/find/journaldescription.cws_home/30466/description#description
dc.identifier.citationPolymer, 2006; 47(9):2976-2983
dc.identifier.doi10.1016/j.polymer.2006.03.006
dc.identifier.issn0032-3861
dc.identifier.issn1873-2291
dc.identifier.urihttp://hdl.handle.net/2440/23540
dc.language.isoen
dc.publisherElsevier
dc.rightsCopyright © 2006 Elsevier Ltd All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.polymer.2006.03.006
dc.subjectpoly(acrylic acid)
dc.subjectrheology
dc.subjectinclusion association
dc.titleRheology control by modulating hydrophobic and inclusion associations in modified poly(acrylic acid) solutions
dc.typeJournal article
pubs.publication-statusPublished

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