Comparative study of polyimides containing different flexible linkages
2012
Two series of polyimides were synthesized based on different aromatic dianhydrides containing various flexible linkages and two aromatic diamines containing ether and nitrile groups. The structure of the polymers was confirmed by FTIR and 1H NMR spectroscopy. The correlation between some physical properties, such as solubility, thermal stability and glass transition temperature, and conformational rigidity parameters, such as Kuhn segment, characteristic ratio and rigidity parameter p, was studied.
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