Abstract
The film-forming properties of two polysiloxanes with ionisable carboxylic acid side chains are investigated on subphases containing salts of the trivalent metal Al 3+. It is shown that, upon carefully adjusting the pH in the range 3.8–4.1, Langmuir-Blodgett deposition of stable films is possible. Atomic force microscopy images of the films suggest that they are composed of circular aggregates some 30–100 nm in diameter. However, the films are quite smooth, exhibiting a typical rms roughness of 1.35 nm. Fourier transfrom infra-red spectroscopy and X-ray photoelectron spectroscopy confirm the presence of aluminium in the films, the latter showing that approximately 20% of the head groups were associated with aluminium.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
