Thermally Stable and Optically Active Poly(amide-imide)s Derived from 4,4’–(Hexafluoroisopropylidene)-N,N’-bis-(phthaloyl-L-methionine) Diacid Chloride and Various Aromatic Diamines: Synthesis and Characterization |
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Authors: | Shadpour Mallakpour Elaheh Kowsari |
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Affiliation: | (1) Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, I.R. Iran |
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Abstract: | Summary Thermally stable and optically active poly(amide-imide)s (PAIs) have been synthesized and their properties such as optical activity, solubility, thermal stability were studied. Polymers were synthesized by solution polymerization of 4,4’–(hexafluoroisopropylidene)-N,N’-bis-(phthaloyl-L-methionine) diacid chloride and various aromatic diamines by three different methods. The compounds obtained were characterized by elemental C, H and N analysis, solubility, FTIR, 1H NMR and 19F NMR spectroscopy. Thermogravimetric curves were also recorded. All data agree with the proposed structures. |
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