- Synthesis and characterization of new copoly(amide-imide)s based on N,N'-(4,4'-diphenylsulfone)bistrimellitimide with different diacids and diamines
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In this paper six new copoly(amide-imide)s (7a-f) were synthesized through the direct polycondensation reaction of N,N'-(4,4'-diphenylsulfone) bistrimellitim.ide (1) with 4,4'-diamino diphenylsulfone (2), 4,4'-diamino diphenylether (3), in the presence of adipic acid (4), fumaric acid (5) or terephthalic acid (6) as the second diacid in a medium, consisting of N-methy1-2-pyrrolidone, triphenyl phosphite, calcium chloride and pyridine. The resulted polymers were fully characterized by means of FTIR spectroscopy, elemental analyses, inherent viscosity, solubility tests and UV-vis spectroscopy. Thermal stabilities of resulted polymers (7a-c) containing three different second diacids were compared by using TGA and DTG thermograms.
- Faghihi, Khalil,Shabanian, Meisam,Faraz, Maryam
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experimental part
p. 289 - 294
(2011/11/29)
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- AROMATIC POLYESTERS CONTAINING HETEROCYCLIC UNITS
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New aromatic polyesters have been synthesized by solution polycondensation of dihydroxyphenylquinoxalines with diacid chlorides containing preformed imide cycles. The thermal stability of these compounds is discussed and compared with related phenylquinox
- Sava, Ion,Hamciuc, E.,Hamciuc, C.,Bruma, Maria,Simonescu, Cristofor I.,et al.
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p. 1145 - 1152
(2007/10/03)
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