Tribology Online (Aug 2014)

The Adsorbed Film Structure of End-Functionalized Poly (perfluoro-n-propylene oxide)

  • Robert Waltman

DOI
https://doi.org/10.2474/trol.9.113
Journal volume & issue
Vol. 9, no. 3
pp. 113 – 120

Abstract

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The D-4OH adsorbed film structure is investigated as a function of film thickness and of molecular weight via surface energy measurements, terraced flow profiles, and ellipsometric imaging for film dewetting. The D-4OH monolayer thickness on a carbon surface exhibited a power law dependence on molecular weight, where the exponent was determined to be 0.70. With decreasing film thickness, the in-plane component of the radius of gyration, normalized to the bulk radius of gyration, increased to ~ 1.5, consistent with an ellipsoidal conformation on the carbon surface. Confinement effects increased with increasing molecular weight.

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