Jump to main content
Jump to site search

Issue 3, 2010
Previous Article Next Article

pH-responsive liquid marbles stabilized with poly(2-vinylpyridine) particles

Author affiliations

Abstract

Submicron-sized sterically-stabilized lightly cross-linked poly(2-vinylpyridine) latexes were synthesized by non-aqueous dispersion polymerization using a hydrophobic polydimethylsiloxane macromonomer and used to prepare millimetre-sized ‘liquid marbles’. These ‘liquid marbles’ exhibited long-term stability when transferred onto the surface of liquid water provided that the solution pH was pH 4.9 or above. In contrast, the use of more acidic solutions (pH < 2.9) led to immediate ‘liquid marble’ disintegration and spontaneous dispersal of the poly(2-vinylpyridine) particles in their protonated microgel form. Moreover, the liquid marbles on the surface of water immediately disintegrated on addition of acid. Thus the critical minimum pH required for long-term ‘liquid marble’ stability correlates closely with the known pKa value of 4.7 for poly(2-vinylpyridine) chains.

Graphical abstract: pH-responsive liquid marbles stabilized with poly(2-vinylpyridine) particles

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Jul 2009, accepted on 28 Oct 2009 and first published on 08 Dec 2009


Article type: Paper
DOI: 10.1039/B914997J
Citation: Soft Matter, 2010,6, 635-640
  •   Request permissions

    pH-responsive liquid marbles stabilized with poly(2-vinylpyridine) particles

    S. Fujii, S. Kameyama, S. P. Armes, D. Dupin, M. Suzaki and Y. Nakamura, Soft Matter, 2010, 6, 635
    DOI: 10.1039/B914997J

Search articles by author

Spotlight

Advertisements