Novel thermally stable poly(thiourea-amide-imide)s bearing C=S moieties and pyridine units in the backbone: Synthesis and properties

作者：Kausar Ayesha; Zulfiqar Sonia; Ahmad Zahoor; Sarwar Muhammad Ilyas^*

来源：Polymer Degradation and Stability, 2010, 95(12): 2611-2618.

DOI：10.1016/j.polymdegradstab.2010.07.021

• Poly(thiourea-amide-imide)s
• Condensation
• Phenyl thiourea
• Pyridine moieties
• Organosolubility

Novel thermally stable and organosoluble poly(thiourea-amide-imide)s (PTAls) were synthesized through the condensation of various diamines with a new kind of aromatic diacid chloride monomer containing pyridine units, 2-(3-(2-(3-(chlorocarbonyl)pyridin-2-yl)-1,3-dioxoisoindoline-5-carbonyl) thioureido) nicotinoyl chloride, CPDITNC. Spectroscopic and elemental analyses were carried out for the structure elucidation of synthesized monomers. Accordingly, the ensuing PTAls were characterized by FTIR, (1)H and (13)C NMR techniques along with crystallinity, organosolubility, inherent viscosity and GPC measurements. Consequently, polymers bearing phenyl thiourea and pyridine moieties in the backbone exhibited good organosolubility in a variety of highly polar solvents such as DMAc, DMF, DMSO and NMP. PTAls encompassed eta(inh) of 1.24-1.46 dL/g and two of the polymers showed crystalline behavior. Moreover, GPC measurements of polymers revealed M(w) around 33,000-50,000. Thermal stability of these polymers was ascertained via 10% weight loss temperatures in the range of 548-562 degrees C (inert atmosphere). Ultimately, these polymers own high glass-transition temperatures about 264-270 degrees C.

• 出版日期2010-12