PETR SYSEL1, ROMAN HOLAKOVSKÝ2, ŠTĚPÁN HOVORKA3, JAROSLAV Ž ÁDNÝ4, PAVEL IZÁK4
Journal of Polymer Materials, Vol.39, No.3-4, pp. 325-335, 2022, DOI:10.32381/JPM.2022.39.3-4.10
Abstract Linear polyimides based on both of the 2,2´-diamino-1,1´-binaphthalene enantiomers and their
racemic mixture were synthesized and characterized. A two-step synthetic route, consisting of
the preparation of the polyimide precursor followed by its thermal imidization at temperatures
not exceeding 200°C, was employed. The products were analyzed by FTIR and 1
H NMR
spectroscopy. All of the tested materials were nearly fully imidized after 25 h. The final polyimides
possess high glass transition temperatures, are thermo-oxidatively stable and are soluble in
common organic solvents as 1-methyl-2-pyrrolidone, tetrahydrofuran and chloroform; additionally,
those prepared from the enantiomers show optical activity. The values of specific… More >
Login
Register
