Synthesis and characterization of polypyrrole-coated sulfur-rich latex particles: New synthetic mimics for sulfur-based micrometeorites

Fujii, Syuji and Burchell, Mark J. and Armes, Steven P. and Jeans, Richard and Devonshire, Robin and Warren, Samantha and McArthur, Sally L. and Postberg, Frank and Srama, Ralf (2006) Synthesis and characterization of polypyrrole-coated sulfur-rich latex particles: New synthetic mimics for sulfur-based micrometeorites. Chemistry of Materials, 18 (11). pp. 2758-2765. ISSN 0897-4756. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1021/cm0601741

Abstract

Polypyrrole (PPy) has been deposited from aqueous solution onto submicrometer-sized sulfur-rich poly[bis(4-vinylthiophenyl)sulfide] (PMPV) latex particles. The PMPV seed particles and resulting composite particles were extensively characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, FT-IR spectroscopy, helium pycnometry, Raman spectroscopy, and electrical conductivity measurements. Four-point probe measurements on pressed pellets indicate conductivities of around 6 x 10(-5) S cm(-1) for a polypyrrole loading of approximately 11.5%. This suggests a somewhat patchy, nonuniform polypyrrole overlayer, which is consistent with our Raman spectroscopy studies. Despite their relatively low conductivities, these polypyrrole-coated PMPV latexes can be accelerated up to hypervelocities (> 20 km s(-1)) using a high voltage (2 MV) van de Graaf instrument. In view of their high sulfur contents (ca. 28%), these new electrically conductive latexes are expected to be interesting synthetic mimics for understanding the behavior of sulfur-based micrometeorites, whose existence has been postulated by planetary scientists investigating signs of volcanic activity on one of Jupiter's moons (Io).

Item Type: Article
Subjects: Q Science
Q Science > QB Astronomy
Q Science > QD Chemistry
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Mark Burchell
Date Deposited: 02 Sep 2008 13:00
Last Modified: 11 Apr 2014 14:56
Resource URI: http://kar.kent.ac.uk/id/eprint/5048 (The current URI for this page, for reference purposes)
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