V. V. Arslanov, L. S. Sheinina, and R. A. Bulgakova
Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117915 Russia
Received December 19, 1996
Abstract—The kinetics of chemical transformations in monolayers of an epoxy oligomer on the surface of aqueous
solutions of phosphotungstic acid was studied. Two-dimensional polymerization of the oligomer resulted in a cross-
linked polymer, as was demonstrated using the surface balance technique, FTIR spectroscopy, and gel-sol analysis.
The weight fraction of the polymer in the monolayer was 85% after 24 h. It was established that the polymerization
process had a topochemical character, resulting in an increase in the monolayer limiting area by a factor of 4.5 and
the monolayer collapse pressure by a factor of 16. In the course of polymerization, a mixed nanostructured monolayer
was formed from an epoxy polymer and heteropolyanions, which were immobilized inside the cross-linked domains
of the two-dimensional matrix and retained the Keggin structure. When the polymerization was carried out on the
surface of a subphase with a neutralized heteropolyacid, the epoxy oligomer was not polymerized and no heteropoly
anions were incorporated into the oligomer monolayer.
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