期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 40, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201800331
关键词
morphology; nanostructures; polymerization-induced self-assembly; reversible addition-fragmentation chain transfer
资金
- National Science Center, Poland [UMO-2014/14/A/ST5/ 00204]
- NSF [DMR 1501324]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1501324] Funding Source: National Science Foundation
The evolution of particle morphology occurring during polymerization-induced self-assembly (PISA) of a block copolymer poly(oligo(ethylene glycol) methacrylate)-b-poly(benzyl methacrylate) (POEGMA-b-PBzMA) is studied. A well-controlled reversible addition-fragmentation chain transfer (RAFT) polymerization yields nano-objects with various morphologies: spheres, aggregates, worm-like structures, and vesicles. A comparison of the morphology of the nano-objects formed from two different chain-length stabilizers established that the unreacted monomer played an important role during the morphology transitions, which is contrary to previous observations. In addition, morphology evolution to higher-order structures could be attained simply by extending the reaction time, after reaching full monomer conversion.
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