Characteristics of organic gas sensitivity in copolymer LB films

The use of preformed copolymers and their cross-linking have been attempted in order to improve the intrinsic fragility of monolayers and Langmuir-Blodgett (LB) films and to make their technological applications possible. It has been shown that an imidization followed by a polyion-complexation can stabilize the LB films against heat and solvents. And, when the polymer structure was property designed, concurrent removal of the alkyl tails together with imide formation could he accomplished. In this paper, the interface can be transferred onto solid substrates such as porous fluorocarbon membranes filter and quartz crystal microbalance (QCM). The properties of the monolayers and the LB films investigated by π-A isotherms, FT-IR, DSC, deposition ratio, QCM and SEM will be discussed. In addition, it was attempted to investigate the reaction of polymer LB films in the organic gas surrounding by the use of QCM.