ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Several completely conjugated, all-carbon-hydrogen acetylene-terminated monomers, bis(ethynylstyryl)benzenes, were synthesized using the Wittig reaction with ethynyl-benzaldehyde and xylyldiphosphonium salts. These prepolymers were thermally polymerized in the melt phase into thermally stable materials that can be further processed into conductive polymers having high stability to aggressive environments. Conductivity can range from that of an insulator to 10+2 s/cm. The room temperature conductivity is unchanged by extended exposure to boiling water or 500°C in an inert atmosphere. With proper design of the monomers' structures, they will melt sufficiently below the polymerization temperature to provide an adequate time in the liquid state for ease of processing. Once cured into the solid form, the materials are intractable and exhibit high stability to aggressive environments.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1992.070440303
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