Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates

Caleb Chong Wei Ping, N. A. Ivanova, V. M. Starov, N. Hilal, D. Johnson

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 oxyethylene groups at concentrations close to the critical aggregation concentration and the critical wetting concentration were used in the spreading experiments. 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 critical wetting concentration 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 critical aggregation concentration for both trisiloxanes on all substrates the time lag of the spreading was detected.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalColloid Journal
Volume71
Issue number3
DOIs
Publication statusPublished - Jun 2009
Externally publishedYes

Fingerprint

Polymers
aqueous solutions
polymers
Substrates
wetting
Wetting
teflon (trademark)
Polytetrafluoroethylene
Polytetrafluoroethylenes
Surface-Active Agents
Paraffin
Surface active agents
Agglomeration
surfactants
Polystyrenes
Hydrophobicity
hydrophobicity
surface properties
Surface properties
polystyrene

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry
  • Surfaces and Interfaces

Cite this

Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates. / Ping, Caleb Chong Wei; Ivanova, N. A.; Starov, V. M.; Hilal, N.; Johnson, D.

In: Colloid Journal, Vol. 71, No. 3, 06.2009, p. 391-396.

Research output: Contribution to journalArticle

Ping, Caleb Chong Wei ; Ivanova, N. A. ; Starov, V. M. ; Hilal, N. ; Johnson, D. / Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates. In: Colloid Journal. 2009 ; Vol. 71, No. 3. pp. 391-396.
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