Synthesis and conductivity of aromatic benzobisthiazole copolymers with main-chain diphenylamino units
- Universal Technology Corporation, Dayton, OH (United States)
- Wright Lab., Wrigth-Patterson AFB, OH (United States); and others
A series of random rigid-rod benzobisthiazole copolymers containing various amounts of electron-rich diphenylamino groups were successfully synthesized. All the copolymers retained their solution anisotropy in polyphosphoric acid at the typical polymer concentrations (10-15%) from which high strength/high modulus PBZT and PBO fibers were spun. Upon doping with iodine vapor, the conductivity of the copolymers increased by at least 5-7 orders of magnitude (from <10{sup -10} S/cm to 2.0 x 10{sup -5} - 9.6 x 10{sup -4} S/cm). There is a monotonic increase in the electrical conductivity with an increase in the content of the diphenylamino active sites in the polymer backbones. The reverse is true for the thermal and thermo-oxidative stabilities of the copolymers. These results provide strong support to our hypothesis that PBX polymers can be made electrically conductive when easily oxidizable sites are present.
- OSTI ID:
- 215162
- Report Number(s):
- CONF-950801-; TRN: 96:000922-0685
- Resource Relation:
- Conference: 210. national meeting of the American Chemical Society (ACS), Chicago, IL (United States), 20-25 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of 210th ACS national meeting. Part 1 and 2; PB: 1866 p.
- Country of Publication:
- United States
- Language:
- English
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