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Self‐assembly of amphiphilic ABA random triblock copolymers in water

Kozawa, Susan K., Matsumoto, Kazuma, Suzuki, Ayaka, Sawamoto, Mitsuo, Terashima, Takaya
Journal of polymer science 2019 v.57 no.3 pp. 313-321
composite polymers, hydrophilicity, hydrophobicity, micelles, polyethylene glycol, polymerization, solubility
Self‐assembly of amphiphilic ABA random triblock copolymers in water serves as a novel approach to create unique structure micelles connected with flexible linkages. The ABA triblock copolymers consist of amphiphilic random copolymers bearing hydrophilic poly(ethylene glycol) and hydrophobic dodecyl pendants as the A segments and a hydrophilic poly(ethylene oxide) (PEO) as the middle B segment. The A block is varied in dodecyl methacrylate content of 20%–50% and degree of polymerization (DP) of 100‐200. By controlling the composition and DP of the A block, various architectures can be tailor‐made as micelles in water: PEO‐linked double core unimer micelles, PEO‐looped unimer or dimer micelles, and multichain micelles. Those PEO‐linked or looped micelles further exhibit thermoresponsive solubility in water. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 313–321