  Here we report the monolayer characteristics of a biodegradable polymer
chitosan using Langmuir-Blodgett film technique. Usually chitosan has not form
stable monolayer film. However they form stable monolayer film when mixed with
fatty acid. Our result may be useful for the biological application of chitosan
mainly in drug delivery. Since, the stability during the time of drug delivery
is one of the important criteria for the choice of biomaterials suitable for
forming the carrier film matrix and the barrier films.
