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Sigma Aldrich Fine Chemicals Biosciences Polypyromellitic dianhydri1L
Supplier: Sigma Aldrich Fine Chemicals Biosciences 5757711L
Poly(pyromellitic dianhydride-co-4 4AE-oxydianiline) amic acid SOLUTIONon (PAA) converts to polyimide at 300oC. The fTIR spectra indicates a carbonyl stretch of carboxylic acids in PAA at 1650 cm-1. following the imidization process the peak at 1720cm-1 grows indicating the formation of imide group.
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