Microstructure and Thermal Behavior of Poly(o-anisidine)/Poly(ethylene terephthalate) Composite

Abstract

ABSTRACT:Poly(o-anisidine)-Poly(ethylene terephthalate) composite film was prepared by chemical oxidative polymerization method. The composite film shows a conductivity of about 15.6 K À1 cm À1 with 3.5 wt. % of POA. Fourier Transform infra-red (FT-IR) and UV-vis spectral analyses reveal the existence of hydrogen bonding interactions between the groups in PET and POA. X-Ray diffraction analysis informs that the amorphous characteristic of PET is affected by the presence of POA in the composite. UV-vis spectral results demonstrate that there exists cross-linking in the composite film when the POA in the composite undergoes doping and dedoping. AFM micrographs confirm the formation of genuine composite between POA and PET.

Deposition Behavior of Polyaniline on Carbon Nanofibers by Oxidative Chemical Vapor Deposition

“…Because oCVD naturally confines the polymerization process to be at the surface where PANI is being deposited, it is reasonable to believe that PANI would have a dominating impact on the observed oCVD reaction kinetics. Furthermore, the literature has suggested that the autocatalytic mechanism could be because of a rapid electron transfer specifically from cation radicals of PANI oligomers to the monomer . Because our FTIR and SEM results support a large amount of oligomer below 90 °C, and our FTIR and XPS results both evidence a more oxidized pernigraniline-like state below 90 °C, it seems reasonable to conclude that the autocatalysis is aided by highly oxidized, short-chain oligomers in this temperature range that leads to the observed oCVD kinetic behavior.…”

Conductive poly (o-anisidine)/poly (ethylene terephthalate) nonwoven composite: Investigation of synthesis parameters and electromagnetic shielding effectiveness

“…In the second step, while the composite exhibited a weight loss of 5.9% between 124 and 276 C, a weight loss of 13.7% was observed between 113 and 330 C in the POA, which can be attributed to the loss of the dopant from the POA chains [34]. In the last step, major weight losses occurred in the composite as a result of the structural decompositions of the POA and PET chains [35]. These weight losses (57.2%) were lower than that of PET nonwoven (78.1%) sample between 390 and 500 C. On the other hand, it was observed that the degradation temperature of PET (398 C) slightly decreased to 391 C after the incorporation of POA to its structure.…”