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Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties

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Abstract

The star amphiphilic block copolymer of star-[poly(N-isopropylacrylamide)-block-polystyrene] [s-PNIPAM-b-PS] is synthesized via RAFT polymerization by combining polymerization-induced self-assembly (PISA) and crosslinking within the linear block copolymer nanoparticles. This strategy affords convenient synthesis of star s-PNIPAM-b-PS with a high molecular weight and a narrow molecular weight distribution. This star s-PNIPAM-b-PS exists as dispersed nanospheres in both common solvents and block-selective solvents, and the size of star s-PNIPAM-b-PS nanospheres is not seriously affected by the polymer concentration, which is different from that of the linear poly(N-isopropylacrylamide)-block-polystyrene [PNIPAM-b-PS] block copolymer counterpart. The solution properties, thermoresponse and interfacial properties of star s-PNIPAM-b-PS are investigated, which were found to be significantly different from those of linear PNIPAM-b-PS.

Graphical abstract: Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties

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Article information


Submitted
03 Nov 2019
Accepted
01 Mar 2020
First published
03 Mar 2020

Polym. Chem., 2020, Advance Article
Article type
Paper

Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties

S. Qian, R. Liu, G. Han, K. Shi and W. Zhang, Polym. Chem., 2020, Advance Article , DOI: 10.1039/C9PY01656B

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