Richardson, T. and Holder, S.J. and Lacey, D. (1993) COPOLYSILOXANES AS PYROELECTRIC LANGMUIR-BLODGETT-FILMS. Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals, 234 . pp. 685-690. ISSN 1058-725X.
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A series of aliphatic acid side-chain copolysiloxanes based on a poly(hydrogenmethyldimethylsiloxane) backbone have been synthesised and evaluated. The length of the aliphatic acid side-chain of each compound has been varied in order to examine the effect on the Langmuir film properties. The surface pressure - area isotherms have indicated that each copolysiloxane forms a stable monomolecular layer on a pure water subphase. Alternate layer structures, in which each siloxane copolymer is co-deposited with a monomeric eicosylamine, have been prepared in order to measure their static pyroelectric coefficients. The magnitude of the coefficient increases as the length of the aliphatic acid side-chain is reduced. The thickness dependence of the coefficient has also been characterised for one of the copolysiloxane derivatives and shows that the pyroelectric effect is greatest for a 25 layer sample (13 layers of copolysiloxane 8/12 layers of eicosylamine).
|Additional information:||3 GORDON BREACH SCI PUBL LTD MN007|
|Subjects:||Q Science > QD Chemistry|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Faculties > Science Technology and Medical Studies > School of Physical Sciences
|Depositing User:||Simon Holder|
|Date Deposited:||01 Oct 2010 14:47|
|Last Modified:||05 Dec 2011 12:54|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/11735 (The current URI for this page, for reference purposes)|
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