NMR and FTIR investigation of the soluti
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Rong Rong Cheng; Stephanie L. Wunder
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Article
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1996
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John Wiley and Sons
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English
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Meta-and para-diethyl-ppoxydiphenylene pyromellitamide (DOP), the model compounds of the meta and para PMDA/ODA polyamic ethyl ester, were synthesized and characterized by NMR and FTIR spectroscopy. Investigation of the imidization in 4-DMSO solution using NMR and FTIR techniques has shown that both