Processable, high molecular weight polyaniline and fibers made t

Details Processable, high molecular weight polyaniline and fibers made t Processable, high molecular weight polyaniline and fibers made t

1992-09-23

1993-11-02

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

252500, 428364, 524606, 528422, 528480, C08J 6702, C08G 7300

Patent

active

052584720

ABSTRACT:
Substantially amorphous, high molecular weight polyaniline which is processable into shaped articles such as fibers is disclosed. Polyaniline base made by standard procedures is subjected to extraction to remove impurities and lower molecular weight fractions. The resulting high molecular weight base, which is partially crystalline and insoluble in NMP and concentrated H.sub.2 SO.sub.4, is converted to an amorphous material soluble in NMP and concentrated H.sub.2 SO.sub.4, by a two step process involving conversion to a salt, and reconversion to a base. Fibers prepared from the high molecular weight material exhibit conductivities in the range of about 50 to 100 S/cm.

REFERENCES:
MacDiarmid et al. "Conducting Polymers", Luis Alcacer (ed.), Reidel Publ. Holland, 1987 p. 105.
M. Angelopoulos et al., "Synth. Met", 21, pp. 21-30 (1987).
M. Angelopoulos et al., "Mol. Cryst. Liq. Cryst.", 160, pp. 151-163 (1988).
S. Wang, F. Wang, X. Ge "Synth. Met.", 16 (1986) 99.
Travers et al. "Mol. Cryst. Liq. Cryst.," 121 (1985) pp. 195-199.

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