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Synthesis and characterization of new polyamides bearing 2,2'-thiobis (1- naphthoxy) units in the main chain; microwave irradiation, nanostructures

Author(s): Esmael Rostami, Abbas Shockravi, Shahram Mehdipour Ataei, Marziyh Ghaedi, Masume Zangooei

A new-type of sulfide containing diacid (2,2'-thiobis (1-naphthoxy acetic acid)) (NA) was synthesized from 1-naphthol in three steps. The obtained diacid (NA) was used to prepare novel thermally stable poly (sulfide ether amide)s via polyphosphorylation reaction. The properties of these new polyamides were investigated. These polyamides showed inherent viscosities in the range of 0.47–0.59 dL g-1 inN,N-dimethylsulfoxide (DMSO) at 30 oC and at a concentration of 0.5 g dL-1.All the polyamideswere readily soluble in a variety of polar solvents and showed thermal resistance. The morphology of polymers shows nanoparticles and nanostructures.

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