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

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

doi:10.1021/ma00194a061

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

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

Research output: Contribution to journal › Article › peer-review

Abstract

Surface pressure π has been measured as a function of surface concentration for poly(phenylmethylsiloxane) liquids, M_n = 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 language	English (US)
Pages (from-to)	1878-1881
Number of pages	4
Journal	Macromolecules
Volume	22
Issue number	4
DOIs	https://doi.org/10.1021/ma00194a061
State	Published - Jul 1 1989
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00194a061

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abstract = "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.",

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AU - Clarson, Stephen J.

AU - Semlyen, J. A.

PY - 1989/7/1

Y1 - 1989/7/1

N2 - 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.

AB - 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.

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

Abstract

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