Adsorption of Organosilicon Monomers
on the Surface of Aluminum and Iron

M. A. Petrunin, A. P. Nazarov, and Yu. N. Mikhailovskii

Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117071 Russia

Received October 14, 1995

Abstract—Quartz-crystal gravimetry and reflection IR spectroscopy were used to study adsorption of alkoxy-
silanes from the gas phase on aluminum and iron surfaces. It was found that irreversible adsorption involves
only one monolayer and that the presence of water on the metal surface is a prerequisite for chemisorption of
alkoxysilanes, a process which is accompanied by the displacement of water into the gas phase. The surface
area occupied by a molecule of an alkoxysilane was determined. The conditions for controlled formation of
alkoxysilane modifiers with the desired structure and adhesiveness with respect to metal surfaces by adsorption
from the gas phase were elucidated.

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