Polyphosphazene

Polyphosphazene

Polyphosphazenes are so-called inorganic polymers with the repeating unit (-RR'P=N-), where R is usually an organic group. They are typically prepared by the thermal ring-opening polymerization of hexachlorophosphazene followed by esterification of the intermediate poly(dichlorophosphazene) and either amines or sodium salts of alcohols. Poly(dichlorophosphazene) is prepared from the ring opening polymerization of hexachlorocyclotriphosphazene.

They were popularized by the research group of Harry R. Allcock at Pennsylvania State University. [Mark, J. E.; Allcock, H. R.; West, R. “Inorganic Polymers” Prentice Hall, Englewood, NJ: 1992. ISBN 0-13-465881-7.]

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