Journal
MACROMOLECULES
Volume 53, Issue 8, Pages 3157-3165Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.0c00371
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Funding
- National Natural Science Foundation of China [21574022, 21774022]
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The polymerization-induced self-assembly (PISA) has been developed with great success and rapidly promoted the application of the self-assembly technique in practice. The living anionic polymerization (LAP) is represented as a paragon in polymer chemistry because of its versatility in the synthesis of well-defined model polymers with many advantages. However, the combination of the LAP mechanism with the PISA process is still rarely succeeded and remains a challenge. In this contribution, the LAP PISA was realized by using diblock copolymer polyisoprene-b-polystyrene (PI-b-PS) as a research model. The comprehensive variation of the factors, such as the molecular weights (MVVs) of PI and PS segments, targeted MW ratio M-n,M-PS/M-n,M-PI, weight solid content, and kinds of comonomers, provided an efficient way to modulate the morphologies. The generated nano-objects included the spherical, wormlike, vesicular micelles, as well as their mixtures. Uniquely, based on the in-situ, site-specific cross-linking of the living species in the final polymerization stage of the LAP PISA process, the generated nano-objects can selectively and efficiently be stabilized by a divinylbenzene agent.
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