Journal
EUROPEAN POLYMER JOURNAL
Volume 43, Issue 3, Pages 824-834Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2006.12.016
Keywords
amphiphilic polymer; hydrophobic polyelectrolyte; micellar polymerization; water-soluble thickeners
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A series of hydrophobically modified polyacrylamides and their hydrolyzed derivatives containing both long hydrophobic groups C18 (< 1.2 mol%), and carboxylic groups (20 mol%) have been prepared by micellar polymerization at high monomer concentration (19 wt%) and post-hydrolysis. H-1 and C-13 NMR elucidation of polymer microstructures displayed a good agreement with feed ratio. Post-hydrolysis process seems to be a more effective route to control the hydrolysis degree. Physico-chemical parameters determination by automatic continuous mixing (ACM) techniques in dilute solution shows the effect of the blocky distribution on the reinforcement of intramolecular hydrophobic association. Rheological measurements show potential thickening properties according to sticky reptation model. (c) 2007 Elsevier Ltd. All rights reserved.
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