Journal
CHEMICAL SCIENCE
Volume 10, Issue 8, Pages 2280-2284Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc04705g
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Funding
- NSERC Canada
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Self-seeding is a process unique to polymer crystals, which consist of regions of different chain packing order and different crystallinity. Here we report the synergistic self-seeding behaviour of pairs of core-crystalline block copolymer (BCP) micelle fragments and show how this strategy can be employed to control the morphology of these BCP comicelles. Each micelle fragment has a critical dissolution temperature (T-c), and unimers of each BCP have a characteristic epitaxial growth rate. The T-c value affects the dissolution sequence of the fragments upon heating, while the unimer growth rate affects the growth sequence upon cooling. By carefully choosing micelle fragments having different T-c values as well as growth rates, we could prepare patchy comicelles and block comicelles with uniform and controllable length. This synergistic self-seeding strategy is a simple yet effective route to control both length and morphology of core-crystalline comicelles
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