Monolayer, Multilayers, and Wetting Film of Poly(phenylmethylsiloxane)

Steve Granick, Daniel J. Kuzmenka, Stephen J. Clarson, J. A. Semlyen

Research output: Contribution to journalArticlepeer-review


Surface pressure π has been measured as a function of surface concentration for poly(phenylmethylsiloxane) liquids, Mn = 1470, 2240, 10,560, and 19,500, spread at the water-air interface at 22.8°C. For the two fractions of least molecular weight, the surface pressure was independent of concentration at submonolayer coverages, reflecting phase equilibria between aggregated and gaseous molecules. For these fractions π rose abruptly at a concentration consistent with estimates of full monolayer coverage and the transition was smooth to multilayers and eventually to films of macroscopic thickness. However, the two fractions of highest molecular weight did not spread.

Original languageEnglish (US)
Pages (from-to)1878-1881
Number of pages4
Issue number4
StatePublished - Jul 1 1989

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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