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Issue 4, 2015
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Dual hydrophilic and salt responsive schizophrenic block copolymers – synthesis and study of self-assembly behavior

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Abstract

A new class of dual hydrophilic diblock copolymers (BCPs) possessing poly(ethylene glycol) (PEG) and zwitterionic polysulfabetaine (PSB) was synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization. These BCPs formed schizophrenic micelles undergoing core–shell transitions upon changing the medium from deionized water to an electrolyte solution. “Conventional” micelles, i.e. PSB at the core and PEG at the periphery, were formed in deionized water. The micelles “inverted” to form PSB at the shell and PEG at the core in electrolyte solutions. The reversal of core–shell structures was thoroughly studied by 1H-NMR spectroscopic analysis, dynamic light scattering (DLS) and transmission electron microscopic (TEM) techniques. Antifouling evaluation in the sea indicated that BCPs displayed antifouling behaviour to some extent. The dual hydrophilic BCPs reported here are potentially useful as stimuli responsive materials.

Graphical abstract: Dual hydrophilic and salt responsive schizophrenic block copolymers – synthesis and study of self-assembly behavior

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Supplementary files

Article information


Submitted
13 Aug 2014
Accepted
25 Sep 2014
First published
25 Sep 2014

Polym. Chem., 2015,6, 599-606
Article type
Paper
Author version available

Dual hydrophilic and salt responsive schizophrenic block copolymers – synthesis and study of self-assembly behavior

V. A. Vasantha, S. Jana, S. S. Lee, C. Lim, S. L. Teo, A. Parthiban and J. G. Vancso, Polym. Chem., 2015, 6, 599
DOI: 10.1039/C4PY01113A

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