期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 31, 期 9-10, 页码 928-933出版社
WILEY-BLACKWELL
DOI: 10.1002/marc.201000092
关键词
block copolymers; micelles; seeded growth; self-assembly; solvent-induced fragmentation
资金
- Natural Sciences and Engineering Research Council of Canada
- European Union
- Royal Society
Addition of a concentrated solution of PI(1000)-PFS(50) dissolved in THF to a solution of PI(1000)-PFS(50) seed micelles in decane led to the formation of uniform elongated fiberlike micelles with a narrow length distribution. When additional THF (>10 vol.-%) was added to the micelles, the micelle length decreased and the contour-length distribution broadened. This effect was shown to be inconsistent with a transition to an equilibrium, in which individual polymer molecules dissociated from and added to existing micelles. Rather, it appears that the polar solvent induced fragmentation of the fiberlike micelles.
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