Heterocyclic polyamides containing hexafluoroisopropylidene groups
- New heterocyclic polyamides have been synthesized by solution polycondensation of aromatic diamines containing phenyl- quinoxaline units with diacid chlorides having both imide and hexafluoroisopropylidene (6F) groups. These polymers are soluble in polar aprotic solvents, such as N-methylpyrrolidone (NMP) or N,N-dimethylformamide (DMF), and can be cast into flexible thin films from solutions. They show high thermooxidative stability with decomposition temperatures above 400°C and glass transition temperatures in the range of 225 - 300°C. The polymer films exhibit good chemical resistance towards deluted acids and good electrical insulating properties with dielectric constants in the range of 3.2 - 3.7.
Author details: | Maria Bruma, Corneliu Hamciuc, Elena Hamciuc, Frank W. Mercer, Nataliya Belomoina, Burkhard SchulzORCiDGND |
---|---|
Publication type: | Article |
Language: | English |
Year of first publication: | 1997 |
Publication year: | 1997 |
Release date: | 2017/03/24 |
Source: | Macromolecular symposia. - 122 (1997), S. 303 - 311 |
Organizational units: | Zentrale und wissenschaftliche Einrichtungen / Interdisziplinäres Zentrum für Dünne Organische und Biochemische Schichten |