Publication Details (including relevant citation information):
Shockravi, A., Abouzari-Lotf, E., Javadi, A., Taheri, S. 41 (3) 174-180
Abstract: A novel sulfoxide containing bis(ether amine) monomer, 2,2'-sulfoxide- bis[4-methyl(2-trifluoromethyl)4-aminophenoxy) phenyl ether] (M2), was synthesized from the halogen displacement of 2-chloro-5-nitrobenzotrifluoride with dibenzosulfoxide (DH) in the presence of potassium carbonate, followed by catalytic reduction of bis(ether nitro) intermediate with Zinc/Ammonium chloride. A series of organic-soluble poly(ether amide)s (PA1-7) bearing sulfoxide and electronwithdrawing trifiuoromethyl group were synthesized from bis(ether amine) with various aromatic diacids (1-7) via a direct polycondensation with triphenyl phosphite and pyridine. The resulting polymers had inherent viscosities ranging from 0.35 to 0.90 dLg-1 at a concentration of 0.5 g/dL in N,N-dimethylacetamide (DMAc) solvent at 25 °C. All the polymers showed outstanding solubility and could be easily dissolved in amide-type polar aprotic solvents (e.g., N-methyl-2-pyrrolidone (NMP), DMAc, and N.N-dimethylformamide) and even dissolved in less polar solvents (e.g., pyridine, and tetrahydrofuran). Also these polymers could be cast into flexible and tough films from DMAc solutions. The glass-transition temperatures of these poly(sulfoxide ether amide)s were recorded between 160-220 °C. 10% weight loss temperatures were recorded in the range of 400-505 °C in nitrogen and 380-480 °C in air atmosphere. ©2009 The Society of Polymer Science, Japan.