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Title: Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates
Authors: Ping, Caleb Chong Wei
Ivanova, Natalia A.
Starov, Victor
Hilal, Nidal
Johnson, Daniel
Issue Date: 2009
Publisher: © Pleiades Publishing (distributed by Springer Science+Business Media LLC.)
Citation: PING, C.C.W. ... et al, 2009. Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates. Colloid Journal, 71 (3) pp. 391–396.
Abstract: The kinetics of spreading of aqueous trisiloxane solutions over different solid hydrophobic substrates has been investigated experimentally. Two pure trisiloxane surfactants with 6 and 8 polyoxyethylene groups at concentrations closed to the critical aggregation concentration (CAC) and the critical wetting concentration (CWC) were used in the spreading experiments. The following three hydrophobic substrates (Teflon AF, Parafilm, and Polystyrene) having different surface properties were used. It was found that the spreading behaviour depends on the hydrophobic/roughness properties of substrates. The rapid spreading and complete wetting were observed for both trisiloxane surfactant solutions at the CWC on a substrate with a moderate hydrophobicity. For both highly hydrophobic Teflon AF and Parafilm substrates only partial wetting was found. The experiments have shown that the spreading behaviour over all substrates proceeds at two stages. At the CAC for both trisiloxanes on all substrates the time lag of the spreading was detected.
Description: This is a pre-publication version of the paper accepted for publication in the Colloid Journal [© Pleiades Publishing 2009]. The definitive version is available from: www.maik.ru or http://www.springer.com/chemistry/polymer/journal/10595
Version: Accepted for publication
DOI: 10.1134/S1061933X09030156
URI: https://dspace.lboro.ac.uk/2134/4912
ISSN: 1061-933X
Appears in Collections:Published Articles (Chemical Engineering)

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