4,4′-[Oxybis(4,1-phenylenethio)]dianiline-based novel polyimides were synthesized from various dianhydrides. Most of the polymers were easily soluble in aprotic polar solvents and in tetrahydrofuran, and they exhibited remarkable film-forming ability. The obtained PIs showed high thermal stability and a large interval between glass transition temperature and the decomposition temperature values. Some of the polyimides exhibited relatively high refractive index of ∼1.9. The highest gas permeability was found for polyimide with hexafluoroisopropylidene units. This polymer also showed relatively good separation ability toward oxygen/nitrogen gas pair.
- Eugenia Grabiec
- Ewa Schab-Balcerzak
- Małgorzata Kurcok
