Influence of multiwalled carbon nanotubes on the structure and properties of poly(ethylene‐co‐vinyl acetate‐co‐carbon monoxide) nanocomposites

Abstract

In this work, composites of poly(ethylene-co-vinyl acetate-co-carbon monoxide) (EVACO)/surface-modified multiwalled carbon nanotubes (m-MWCNTs) were prepared using a solution casting technique. Acid treatment was employed for the surface modification of MWCNTs to improve the compatibility between polar EVACO and MWCNTs. The influences of m-MWCNTs on the crystalline, mechanical, thermal, and electrical properties of EVACO at very low filler loading were systematically evaluated. The presence of m-MWCNTs in the EVACO matrix influenced the crystallinity, and the respective changes were determined and quantified using dynamic scanning calorimetry and X-ray diffraction. The mechanical properties of the composites were improved remarkably by the addition of a minute quantity (0.05, 0.1, 0.15, 0.2, and 0.25 wt%) of m-MWCNTs. Additionally, m-MWCNTs in the EVACO matrix improved the thermal stability and electrical properties of EVACO. However, the filler loading is below the threshold loading of the fillers, and there was no drastic improvement in the electrical conductivity of the composite.

Use of synthetic wollastonite nanofibers in enhancing mechanical, thermal, and flammability properties of polyoxymethylene nanocomposites

“…[8,9] Thus, studies were conducted to investigate the effects of various nanofillers on the polymer properties, making attempts to overcome the drawbacks possessed by polymer itself. [10][11][12] Carbon-based nanofillers, silicate-based nanofillers, hydroxyapatite, and nanoparticulate oxides are some of the nanofillers used to improve the properties of POM. [1,13] For example, carbon nanotubes (CNT) improved the tensile strength and Young's modulus of POM nanocomposites and possessed a higher degree of crystallinity.…”

Experimental and numerical evaluation of the surface‐localized heating capacity of the photothermal nanocomposite‐incorporated knit fabrics

“…Fortunately, carbon nanomaterials are excellent fillers due to their unique properties so that many investigations have been carried out on the use of carbon nanomaterials as carbon/polymer composites. In addition to improving the mechanical [ 24 ] and thermal [ 25 ] properties of the carbon‐based polymer composite, it is also expected to provide additional functionality, especially photothermal conversion properties. Considerable investigations have been performed to find more efficient materials to improve the performance of the composite structure for solar energy‐saving systems.…”

Mechanical and thermal properties of synergistic modification of bismaleimide polymer composites with nano‐SiO2 and hyperbranched polyimide

“…Nano‐silicon oxide [ 21–23 ] (nano‐SiO 2 ) has special volume effect and large specific surface area. However, due to its large surface energy, it is prone to agglomerate, [ 24–26 ] so we used the ultrasonic stirring method to improve its dispersion in the resin matrix. Under appropriate addition, nanoparticles can be used as stress concentration points and generate more micro‐cracks [ 27 ] when the material is impacted.…”

“…Nano-silicon oxide [21][22][23] (nano-SiO 2 ) has special volume effect and large specific surface area. However, due to its large surface energy, it is prone to agglomerate, [24][25][26] so we used the ultrasonic stirring method to improve its dispersion in the resin matrix.…”