Evaluation thermal degradation kinetics of ionic liquid assisted polyetheretherketone‐multiwalled carbon nanotubes composites

Abstract

The incorporation of multiwalled carbon nanotubes (MWCNT) into polyetheretherketone (PEEK) composites has emerged as a promising strategy for enhancing the thermomechanical characteristics of PEEK composite materials. This study investigates the thermal behavior and kinetics prediction of PEEK/MWCNT composites comprising different ionic liquids (ILs), namely 1‐butyl‐3‐methylimidazolium hydrogen sulfate ([BMIM]HSO4), 1‐butyl‐3‐methylimidazolium acetate ([BMIM]Ac), 1‐ethyl‐3‐methylimidazolium acetate ([EMIM]Ac) and 1‐ethyl‐3‐methylimidazolium hydrogen sulfate ([EMIM]HSO4). Three non‐isothermal methods Coats‐Redfern, Broido, and Horowitz‐Metzger, were employed to model the thermal decomposition profiles of fabricated composites to calculate the activation energy. The highest decomposition temperature (580°C) was obtained for [BMIM]HSO4‐based PEEK/MWCNT composites. Moreover, a 3%–8% increase in the activation energy was obtained compared to PEEK/MWCNT manufactured without ILs. The Coats‐Redfern model was superior to Broido and Horowitz‐Metzger models in modeling the thermal degradation of developed composites, as evidenced from the higher value of the coefficient of determination (R2 ≥ 0.9899). By determining the Root Mean Square Error (RMSE) and R2 for the thermal degradation kinetics data, the artificial neural network (ANN) model was employed. The ANN model accurately predicted the mass loss curves, exhibiting R2 ≥ 0.9815 for the designed model. These findings can assist in establishing an IL‐assisted benign approach for PEEK/MWCNT/IL composites with superior thermal characteristics.

Thermomechanical evaluation of zinc oxide/hydroxyapatite/high‐density polyethylene hybrid composites

“…8 Different types of inorganic fillers are used to enhance the mechanical stability and thermal properties of polymers. There are few studies on the subject, and inorganic fillers, such as carbon nanotubes (CNTs), 11,12 graphene oxide (GO), 13 zirconia (ZrO 2 ), 14 hydroxyapatite (HA), 15 aluminium oxide (Al 2 O 3 ), 16 and titanium oxide (TiO 2 ) 17 have been used to enhance the thermomechanical properties of polymeric composites. For instance, Alsayed et al 8 fabricated a composite of high-density polyethylene (HDPE) with zinc ferrite (ZnFe 2 O 4 ) nanoparticles via a compression molding technique.…”

Biocompatible and Biodegradable Surfactants from Orange Peel for Oil Spill Remediation

“…In this regard, researchers have focused on developing environmentally friendly extraction techniques. ILs are gaining higher interest due to their outstanding properties and are a fantastic substitute for conventional organic solvents [25,26]. ILs can even be recycled to be utilized multiple times, making it a feasible and efficient system compared to other organic solvents.…”

Fabrication and characterization of 3D printable nanocomposite filament based on cellulose nanocrystals and polylactic acid using ionic liquids

“…The utilization of ionic liquids in the production of nanocellulose has been proposed as a potential solution to these challenges. ILs are unique in that they have low volatility and high thermal stability making them ideal for use in the production of nanocellulose 7,9–12 . They also can dissolve a wide range of cellulosic materials which allows for the efficient production of nanocellulose with tunable properties such as particle size, degree of substitution, and crystal structure 13,14 .…”

“…ILs are unique in that they have low volatility and high thermal stability making them ideal for use in the production of nanocellulose. 7,[9][10][11][12] They also can dissolve a wide range of cellulosic materials which allows for the efficient production of nanocellulose with tunable properties such as particle size, degree of substitution, and crystal structure. 13,14 This can be beneficial for the development of nanocellulosic materials with specific properties for various usages.…”