Accessibility navigation


Micellar and surface properties of a poly(methyl methacrylate)-block-poly(N-isopropylacrylamide) copolymer in aqueous solution

Kelarakis, A., Tang, T., Havredaki, V., Viras, K. and Hamley, I. W. (2008) Micellar and surface properties of a poly(methyl methacrylate)-block-poly(N-isopropylacrylamide) copolymer in aqueous solution. Journal of Colloid and Interface Science, 320 (1). pp. 70-73. ISSN 0021-9797

Full text not archived in this repository.

To link to this article DOI: 10.1016/j.jcis.2007.12.030

Abstract/Summary

Critical micelle concentrations (cmc) of aqueous solutions of poly(methyl methacrylate)-block-poly(N-isopropylacrylamide) were determined at several temperatures by surface tensiometry. Below the lower critical solution temperature (LCST), the low Delta(mic) H-0 determined can be assigned to the PMMA block being tightly coiled in the dispersed molecular state, so that the unfavorable interactions of hydrophobic entities with water are minimized. Above the LCST the cmc value was found to increase; an anomalous behavior that can be directly related to the micelle-globule transition of the hydrophilic block. Interestingly, above the LCST the surface tension of relatively concentrated solutions was found to depend weakly on temperature not following the usual strong decrease with temperature expected for aqueous solutions. (C) 2007 Elsevier Inc. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11390
Uncontrolled Keywords:critical micelle concentration, surface properties, thermoresponsive, aggregation, RESPONSIVE BLOCK-COPOLYMER, DIBLOCK COPOLYMERS, ETHYLENE-OXIDE, POLY(ETHYLENE GLYCOL), RAFT POLYMERIZATION, DRUG SOLUBILIZATION, TRIBLOCK COPOLYMERS, PHASE-TRANSITION, STYRENE OXIDE, MICELLIZATION

Centaur Editors: Update this record

Page navigation