Issue 14, 2020

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

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

Supplementary files

Article information

Article type
Paper
Submitted
03 nov. 2019
Accepted
01 mars 2020
First published
03 mars 2020

Polym. Chem., 2020,11, 2532-2541

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, 11, 2532 DOI: 10.1039/C9PY01656B

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