Surfactant-enhanced spreading

T. Stoebe, Zuxuan Lin, Randal M. Hill, Michael Ward, H. Ted Davis

Research output: Contribution to journalArticle

Abstract

The spreading of aqueous mixtures of a number of surfactants, including "superspreading" trisiloxane surfactants, has been investigated as a function of surfactant concentration, substrate surface energy, temperature, humidity, and substrate roughness. The substrate surface energy, characterized in terms of the contact angle of water, was controlled by the deposition of mixed organosulfur monolayers with different terminal chemical functionalities. The data demonstrate a strong spreading rate dependence on both surfactant concentration and surface energy. Furthermore, they indicate that nonturbid trisiloxane surfactant solutions, which were previously believed not to promote rapid spreading, display superspreading characteristics, albeit on substrates which were less hydrophobic than those initially investigated. Moreover, both turbid dispersions and nonturbid solutions of nonionic surfactants lacking trisiloxane groups have also been found to promote greatly enhanced spreading on less hydrophobic surfaces. Cationic and anionic surfactants were not observed to exhibit enhanced spreading characteristics. These results indicate that surfactant-enhanced spreading denoted earlier as "superspreading", is not limited to turbid aqueous dispersions of trisiloxane surfactants, and this phenomenon may be more general and occur in a much more diverse class of compounds than previously thought.

Original languageEnglish (US)
Pages (from-to)337-344
Number of pages8
JournalLangmuir
Volume12
Issue number2
StatePublished - Jan 24 1996

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Surface-Active Agents
Surface active agents
surfactants
Interfacial energy
Substrates
surface energy
Dispersions
Anionic surfactants
Cationic surfactants
Nonionic surfactants
Contact angle
Monolayers
Atmospheric humidity
Surface roughness
humidity
roughness
Water
water

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Stoebe, T., Lin, Z., Hill, R. M., Ward, M., & Davis, H. T. (1996). Surfactant-enhanced spreading. Langmuir, 12(2), 337-344.

Surfactant-enhanced spreading. / Stoebe, T.; Lin, Zuxuan; Hill, Randal M.; Ward, Michael; Davis, H. Ted.

In: Langmuir, Vol. 12, No. 2, 24.01.1996, p. 337-344.

Research output: Contribution to journalArticle

Stoebe, T, Lin, Z, Hill, RM, Ward, M & Davis, HT 1996, 'Surfactant-enhanced spreading', Langmuir, vol. 12, no. 2, pp. 337-344.
Stoebe T, Lin Z, Hill RM, Ward M, Davis HT. Surfactant-enhanced spreading. Langmuir. 1996 Jan 24;12(2):337-344.
Stoebe, T. ; Lin, Zuxuan ; Hill, Randal M. ; Ward, Michael ; Davis, H. Ted. / Surfactant-enhanced spreading. In: Langmuir. 1996 ; Vol. 12, No. 2. pp. 337-344.
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