Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 26, Issue 17, Pages 1371-1376Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200500387
Keywords
ABC terpolymers; multifunctional material; physical gel; responsive macromolecules; three-compartment micelles
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A highly asymmetric P2VP(58)-PAA(924)-PBMA(48) double hydophilic block terpolymer exhibits a rich phase behavior as a function of pH. In acidic media (pH 1) three compartment micelles with a positively charged outer corona are formed. At high pH, the above structure is transformed into a three-dimensional transient network constituted of hydrophobic domains interconnected with negatively charged bridging chains (PAA chains). At even higher pH (14) the network is disrupted and finally exhibits a closed loop sol-gel-sol behavior.
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