Novel organosoluble cardo poly(amide-imide)s derived from 2,2-bis[4-(4-trimellitimidophenoxy) phenyl]norbornane: synthesis and characterization

摘要

Aromatic polyimides possess many desirable characteristics such as high thermal stability and excellent physical properties. However, they are generally insoluble and infusible after conversion from their poly(amic acid) precursors. Replacement of polyimides by copolyimides such as poly(amide-imide)s may be useful to tackle the intractability of polyimides. Poly(amide-imide)s are also expected to have the advantages of polyamides and polyimides, such as excellent mechanical and thermal properties as well as solvent resistance. Commercial available poly(amide-imide) is produced by Amoco Chemicals Corporation which was prepared from trimellitic anhydride (TMA) and various diamines. The incorporation of cardo and bulky norbornyl group into polyamide backbones is expected to increase the solubility, thermal and mechanical properties of the polymers. The characterization of new polymers such as crystallinity, thermal, physical and mechanical properties are also investigated.