FTIR study of the structures of vapor deposited PMDA–ODA film in presence of copper phthalocyanine

Chemical and Physical Properties of Polyimides: Biomedical and Engineering Applications

“…The quality of the film is identical with the one of PI obtained only after a thermal treatment for 1h at 300 0 C. The method carried out allowed for PI production to be optimized by the involving of MW treatment of vacuum deposited films [10,24].…”

“…Our studies have focused primarily on vapour deposition of precursors and solid state imidization reaction [7,10,11,12]. Vapour deposition processes of organic layers play an important role in polytronics.…”

“…These processes are to great extent accelerated and controlled in the thermal treatment of the condensed solid phase which represents PAA, with regard to their transformation to PI by means of reaction of polycyclodehydration in solid state to linear PI [7,10,11]. The FTIR spectra of individual films of PMDA, ODA and PAA are shown in figure 2.…”

“…In figure 3 are compared the spectra of PAA and solid imidization film of PAA to PI obtained after thermal treatment. [7,9,10].…”

“…It was found that higher imidization degree achieved for 15 min. after application of MW and thermal treatment at 250 °C compared with only thermal treatment [24,25,10]. Therefore, the mechanism of the reaction according Scheme 1 and 6 requirements not only affect energy and same temperature achievement in the layer, but also requires strict established parameters: the type of treatment, power and time of action to achieve a high imidization degree.…”