Abstract
The present work is aimed to fabricate a new set of composite materials containing conducting poly (azomethine-ether) reinforced with single-walled carbon nanotubes in the form of single-walled carbon nanotube/poly(azomethine-ether)(1-5) for excellent enhanced thermal as well as conducting behavior of poly(azomethine-ether). Single-walled carbon nanotubes of variable loading have been embedded into conducting poly(azomethine-ether) using in situ polymerization technique. Before attempting the polymerization, 1,3-thiazole established poly(azomethine-ether) and its conformable monomers have been prepared and their chemical structures have been correlated by spectral analyses. Furthermore, eta(inh) and M-w values for poly(azomethine-ether) were found 0.89 dL g(-1) and 39723.6, respectively. The fabricated single-walled carbon nanotube/poly(azomethine-ether)(1-5) composites were specified and characterized by wide-angle X-ray diffraction patterns, Fourier transform infrared spectroscopy, thermal behavior, scanning electron microscopy, and transmission electron microscopy characterization techniques. A perfect indicative response for this composite material was estimated by Fourier transform infrared spectra and X-ray diffraction as well. Both techniques displayed all intensive characteristic peaks regarding single-walled carbon nanotubes and poly(azomethine-ether) in the spectra or diffraction pattern for single-walled carbon nanotube/poly (azomethine-ether)(1-5). The role of single-walled carbon nanotubes on the performance of poly (azomethine-ether) was considerably examined. Single-walled carbon nanotube/poly(azomethineether)(1-5) showed relatively higher thermal stability. Single-walled carbon nanotube/poly(azomethine-ether)(1) displayed the lowest final composite degradation temperature value (552 degrees C), whereas single-walled carbon nanotube/poly(azomethine-ether)(5) displayed the highest value (621 degrees C). T10 and T25 values showed a gradual temperature increased while single-walled carbon nanotubes increased. Single-walled carbon nanotube/poly(azomethine-ether)(1) showed the lowest thermal stability and single-walled carbon nanotube/poly(azomethine-ether)(5) showed the highest thermal stability between all fabricated products. Furthermore, transmission electron microscopy images showed a prominent increase in single-walled carbon nanotubes diameters (40-60 nm). The conductivity values were significantly increased while single-walled carbon nanotubes content was increased and reached to the semiconductors. epsilon' values were also increased in both single-walled carbon nanotube/poly(azomethine-ether)(4,5) which have higher single-walled carbon nanotubes content.
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