ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Copolymerization of para-phenylenediamine sulfate (PPD-S), hydrazine sulfate (Hy-S), and terephthalic acid (TA) in SO3 yielded solutions of poly[p-(disulfonatophenylene)terephthalamide]-co-poly(p-phenylene-1,3,4-oxadiazole) (SPT-co-POx). Reaction of PPD-S, TA, and 4,4′-sulfonyldibenzoic acid (SDBA) in SO3 gave sulfonated copolyamide (SPT-co-SPSDB) solutions. Solutions of both SPT-co-POx (mole % ratios of 70:30 to 90:10) and SPT-co-SPSDB (75:25 to 90:10) were anisotropic, illustrating liquid crystalline behavior for polymeric structures containing significant amounts of noncoaxial backbone components.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1979.170171112
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