Properties of monolayers of polydiethylethylhydrosiloxane at interfaces

TLDR: In this paper, a change in the pH of the substrate leads to correlated changes in the pressure in a monolayer of PDEHS and the wettability by water of such layers, transferred to glass by the Langmuir method.

Abstract: 1. Polydiethylethylhydrosiloxane (PDEHS) in monolayers on a water/air interface in the presence of acids and alkalis is hydrolyzed with the formation of more surface-active products. In the case of hydrolysis, the≡Si-H groups of the oligomer are affected first. 2. The high sensitivity of PDEHS to the presence of H+ and OH− ions in the substrate permits us to assume that on the surface of glass, which is not, as a rule, neutral, appreciable hydrolysis of PDEHS molecules may occur. 3. A change in the pH of the substrate leads to correlated changes in the pressure in a monolayer of PDEHS and the wettability by water of such layers, transferred to glass by the Langmuir method.