Manuscript_Coll Journal_corrected.pdf (830.72 kB)
Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates
journal contribution
posted on 2009-06-29, 16:30 authored by Caleb Chong Wei Ping, Natalia A. Ivanova, Victor Starov, Nidal Hilal, Daniel JohnsonThe 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.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
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.Publisher
© Pleiades Publishing (distributed by Springer Science+Business Media LLC.)Version
- AM (Accepted Manuscript)
Publication date
2009Notes
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/10595ISSN
1061-933X;1608-3067Language
- en