PreprintArticleVersion 1This version is not peer-reviewed
Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage
Version 1
: Received: 11 July 2024 / Approved: 11 July 2024 / Online: 11 July 2024 (11:37:09 CEST)
How to cite:
Andezai, A.; Iroh, J. O. Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage. Preprints2024, 2024070964. https://doi.org/10.20944/preprints202407.0964.v1
Andezai, A.; Iroh, J. O. Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage. Preprints 2024, 2024070964. https://doi.org/10.20944/preprints202407.0964.v1
Andezai, A.; Iroh, J. O. Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage. Preprints2024, 2024070964. https://doi.org/10.20944/preprints202407.0964.v1
APA Style
Andezai, A., & Iroh, J. O. (2024). Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage. Preprints. https://doi.org/10.20944/preprints202407.0964.v1
Chicago/Turabian Style
Andezai, A. and Jude O. Iroh. 2024 "Influence of the processing conditions on the rheology and heat of decomposition of solution processed hybrid nanocomposites and implication to sustainable energy storage" Preprints. https://doi.org/10.20944/preprints202407.0964.v1
Abstract
This study investigates the properties of solution processed hybrid pol-yimide, PI nanocomposites containing a variety of nanofillers, including polyaniline copolymer modified clay, PNEA, nanographene sheets, NGS, and carbon nanotube sheet, CNT-PVDF, respectively. Through a series of experiments, the flow behavior of poly(amic acid), PAA solution and PAA suspension containing polyaniline copolymer modified clay, PNEA was determined as a function of the shear rate, processing temperature and polymerization time. It is shown that the neat PAA solution exhibited a complex rheological behavior ranging from shear thickening to New-tonian behavior with increasing shear rate and testing temperature. The presence of modified clay in PAA solution significantly reduced the viscosity of PAA. Differential Scanning Calorimetry (DSC) analysis show that polyimide-nanographene sheets, PI NGS nanocomposites processed at high spindle speed (100 rpm) had lower total heat of decomposition which is indicative of improved fire retardancy. The effect of processing temperature on the specific capacitance of polyimide-CNT-PVDF composites containing electrodeposited polypyrrole fillers was determined by using cyclic voltammetry, CV. It was shown that the hybrid composite working electrode material processed at 90˚C produced a remarkably higher overall stored charge when compared to the composite electrode material processed at 250˚C. Consequently, the specific capacitance ob-tained at a scan rate of 5 mV/s for the hybrid nanocomposite processed at 90°C was about 858 F/g after 1 cycle, which is about 6.3 times higher than the specific capacitance of 136 F/g produced by the hybrid nanocomposite processed at 250°C. These findings show that the properties of the hybrid nanocomposites are remarkably influenced by the processing conditions and highlights the need for process optimization.
Keywords
polyimide nanocomposites; Nanographene sheets; Carbon nanotube sheets; Intrinsic viscosity; Shear thickening; Total heat of decomposition; Cyclic voltammetry; Specific capacitance; Processing temperature
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
