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Impregnation of Ru(cod)(tmhd)2 into PDMS Film in Supercritical Carbon Dioxide

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Abstract:

Metallopolymer nanocomposites has attracted much attention recently. The impregnation of organometallic compound from the supercritical solution into the polymer matrix has several advantages. The impregnation process isotherm of bis(2,2,6,6-tetramethyl-3,5-heptanedionato) (1,5-cyclooctadiene) ruthenium (II) (Ru(cod)(tmhd)2) into polydimethylsiloxane (PDMS) film in supercritical carbon dioxide (scCO2) was investigated. The experiments for determining the isotherm were carried out at 40 °C and 10.34 MPa. It was found that the impregnation isotherm is linear up to the saturation concentration of the precursor in scCO2 fluid phase. The slope of the linear curve defined equilibrium partition coefficient K provides a measure of the partitioning of Ru(cod)(tmhd)2 between the PDMS film and scCO2 fluid phase and it is constant under the same conditions. It showed that K is mainly govered by the density of scCO2 and does not change much with temperature at a constant density of scCO2.

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Materials Processing Technology, ICAMMP2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

2260-2264

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.2260

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Online since:

December 2011

Authors:

Ming Lan Ge, Fu Chen Ding, Can Erkey

Keywords:

Isotherm, PDMS Film, Ru(cod)(tmhd)2, Supercritical Impregnation

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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