Fabrication of pmma/arachidic acid lb films

Abstract

Fabrication of the polymethyl methacrylate (PMMA) molecules onto solid substrates in order to form Langmuir-Blodgett (LB) thin films have been studied in this paper. As a first step to determine the optimum conditions for the deposition isotherm graphs of PMMA molecules have been recorded which showed that PMMA molecules can easily be organised on the water surface. Mean value of the area per molecule of the selected PMMA molecules have been calculated between 2000 and 3500 nm(2). Alternate layer (AL) type LB thin films of PMMA molecules have been fabricated using arachidic acid as a promoter. Mixed monolayers of PMMA and arachidic acid could also form stable monolayers and thin films up to 2 layers.