Gas sensing properties of itaconate copolymer LB films

We have investigated the electrical characteristics of sensitive films for an in-plane to develop the gas sensor using Langmuir-Blodgett (LB) method. The itaconate copolymer (C(18)ITA-VE2) is used as sensitive materials. The conductivity of C(18)ITA-VE2 is distributed in the range of 10(-7)similar t o 10(-6)[S/cm], which corresponds to the range of the semiconductor. We hav e investigated the conductivity change of C(18)ITA-VE2 LB films after injec tion of organic gases. In the experimental results, the relation of sensiti ve materials and organic gases can be divided by three-region. Thus, we can fabricate the modelling of the gas response characteristics using the cond uctivity change of C(18)ITA-VE2 LB films.