Abstract
Aromatic diamine and dibromide with sulfone group as the monomers, three kinds of sulfoned-poly(imino ketone)s (PIKSs) were synthesized via C-N cross-coupling reaction. Their structures were characterized by means of FT-IR and 1H NMR, and the results showed an agreement with the proposed structures. The condensed structures of PIKSs were tested by WXRD, and the WXRD measurement results showed that these polymers had amorphous constitution. Also their thermal properties were tested by DSC and TG, the results indicated they featured high Tg (Tg >200°C) and good thermal stability (T5%﹥440°C). In addition, the adoption of sulfone group increased PIK’s solubility in organic solvents, and PIKSs were soluble in most commonly used organic solvents.
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