Synthesis and characterization of novel aromatic-aliphatic poly(amide-imide-imide)s (PAII)

Abstract

Novel poly(amide‐imide‐imide)s (PAII) were prepared by polycondensation of a new monomer synthesized from trimellitic anhydride and glutamic acid, followed by reflux condensing with thionyl chloride and several diamines. Polymers and monomers were characterized by 1H NMR and FT‐IR spectroscopy, elemental analysis and mass spectrometry. Inherent viscosities of the resulting polymers were in the range of 17–26 mL g–1 (Mw 13 400–29 160, polydispersity (Mw/Mn) ca. 1.3–1.7), representing rather low molecular weights. The glass transition temperatures of the polymers were in the range of 210–285°C depending on the structure of diamines, and the thermal stability of the polymers was up to 400°C, comparable with that of polyimides and poly(amide imide)s. All the polymers synthesized are well soluble in aprotic polar solvents such as dimethylformamide, dimethyl sulfoxide, N‐methyl‐2‐pyrrolidone and dimethylacetamide. Particularly, polymers containing oxydianiline and 4,4′‐diaminodiphenyl sulfone were quite soluble in m‐cresol, pyridine, nitrobenzene and tetrahydrofuran.

New optically active polyesterimides and polyamidoimides. Part II. Syntheses of optically active polymers

“…Jak wynika z danych zawartych w tabelach 3 i 4, lepkooeae w³aoeciwa 0,5-proc. roztworów zsyntetyzowanych PAMI (z wyj¹tkiem PAMI-22) nie przekracza³a 0,15, co wskazuje na ich ma³y ciê¿ar cz¹steczkowy (zgodnie z niektórymi publikacjami, lepkooeae w³aoeciwa mo¿e stano-wiae kryterium wstêpnego oszacowania ciê¿aru cz¹steczkowego poliimidów oraz kopoliimidów [15,16] DKI-30 1,17 0,0042 0,64 0,0088 DAD 0,69 0,0042 0,0626 * ) DAB -4,4'-diaminobibenzyl (cz. 97 %, prod.…”