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Issue 6, 2005
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Formation of hybrid micelles between poly(ethylene glycol)-block-poly(4-vinylpyridinium) cations and sulfate anions in an aqueous milieu

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Abstract

The SO42−-induced micellization of poly(ethylene glycol)-block-poly(4-vinylpyridinium) (PEG-b-P(4-VPH+)) in aqueous solution is studied by dynamic and static light scattering, and transmission electron microscopy. The SO42− anions can act as cross-linkers of the P(4-VPH+) blocks through the electrostatic attraction between 4-VPH+ and SO42− to induce the micellization of PEG-b-P(4-VPH+). The resultant hybrid micelles are spherical and consist of an ion-complex core of P(4-VPH+)/SO42− and a water-soluble PEG corona and present a density gradient between the core and corona and the core has a higher density. The SO42− concentrations can affect the structure of the core–corona hybrid micelles. The low SO42− conentration leads to a loose core while the high SO42− concentration leads to a compact core.

Graphical abstract: Formation of hybrid micelles between poly(ethylene glycol)-block-poly(4-vinylpyridinium) cations and sulfate anions in an aqueous milieu

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Publication details

The article was received on 31 Aug 2005, accepted on 03 Oct 2005 and first published on 19 Oct 2005


Article type: Paper
DOI: 10.1039/B512610J
Citation: Soft Matter, 2005,1, 455-459
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    Formation of hybrid micelles between poly(ethylene glycol)-block-poly(4-vinylpyridinium) cations and sulfate anions in an aqueous milieu

    K. Wu, L. Shi, W. Zhang, Y. An, X. Zhu, X. Zhang and Z. Li, Soft Matter, 2005, 1, 455
    DOI: 10.1039/B512610J

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