Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Efforts have been devoted to synthesize and characterize processable polymers with desired properties. Herein, four different series of aromatic aliphatic terpolyamides were prepared via solution phase polycondensation 4,4′-oxydianiline hexamethylenediamine (HMDA) various diacids chlorides (isophthalyol dichloride, terepthalyol 1, 1′-ferrocene dicarboxylic acid chloride trans-azobenzene-4, 4′-dicarbonyl chloride). The structural, morphological physico-chemical nature as was explored by Fourier-transform infrared spectroscopy, scanning electron microscopy, thermal analysis (TGA DSC), wide-angle x-ray diffraction. Moreover, an diamine incorporated in varying concentration a flexible methylene spacer the effect its on properties polyamides also studied. Changes such solubility, inherent viscosity, surface morphology flame retarding behaviour investigated. Marked difference solubility observed change ratio segments chain. Inherent viscosities ranged from 1.8052–1.6274 dl/g indicating reasonably moderate molecular weights. Interestingly, ferrocene based more thermally stable (Tg 260 °C, Ti 310 Th 525 Tf 720 for PF0), found exhibit best behavior (limiting oxygen index value PF0is LOI 33.15%).