Carbon nanotubes/polyaniline nanocomposite coatings: Preparation, rheological behavior, and their application in paper surface treatment

Abstract

Conventional cellulosic paper, rendered electro-conductive, may hold considerable promise for diversified applications in such areas as electro-magnetic interference shielding and energy storage. Here, an electro-conductive cellulosic paper was prepared by surface application of multi-walled carbon nanotubes (MWCNTs)/polyaniline (PANI) nanocomposites onto a conventional base paper. MWCNTs/PANI nanocomposites were prepared by in situ polymerization of aniline with different contents of MWCNTs and used as electro-conductive filler for the fabrication of electro-conductive surface-coated paper. The achieved MWCNTs/PANI nanocomposites exhibited a core-shell structure, as evidenced by TEM. Effects of feeding ratios of MWCNTs on the rheological behavior of nanocomposite coatings, as well as the mechanical properties and electrical conductivity of surface-coated paper were studied. Results revealed that the rheological behavior of the nanocomposite coatings showed strong dependence on the MWCNTs content. Moreover, both the electro-conductivity and mechanical properties of surface-coated paper were improved as a function of surface application of MWCNTs/PANI nanocomposites, particularly, in presence of an optimum content of MWCNTs. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46329.

Development and characterization of novel emulsified nanocomposite coatings incorporating different loadings of nanoclay and beeswax for paper packaging

“…Our results corroborate those of Huang et al 56 who noticed an increase in the tensile index of PVA/cellulose nanofibers coated paper when cellulose nanofibers (CNFs) content was increased to 3.0 wt%, most likely due to the ability of the incorporated CNFs to interact through their hydroxyl groups with fibers on the surface of paper leading to the enhancement of bonding force between the cellulosic fibers, thus improving the tensile strength of the resulting nanocomposite papers. Similar behavior was previously noticed by Mao et al 57 who reported a percentage increase of 12.46% in the tensile index of nanocomposite multi-walled carbon nanotubes (MWCNTs)/polyaniline (PANI) nanocomposites coated paper as a result of increasing MWCNTs content as compared to the base paper. Such improvement in the mechanical strength of the resulting coated papers was mainly attributed to the excellent reinforcing effect of incorporating nanofillers along with the ability of MWCNTs and PANI to form a core–shell structure that may confer external force to the whole system, leading to the improvement of the mechanical properties of surface-coated paper.…”

One-pot ball-milling preparation of graphene/carbon black aqueous inks for highly conductive and flexible printed electronics

“…By contrast, at high frequencies, Gʹ and G˝are dependent on the frequency and both increase with increasing frequency, as the structure of the inks does not have enough time to relax [40]. Moreover, there is a gradual rise in tanδ with increasing GS content as a result of the increased viscosity of inks [41]. These results are contributed to the storage and screen printing of composite inks: the inks have higher elasticity in the static state and higher viscosity during printing.…”

Review of electrically conductive composites and films containing cellulosic fibers or nanocellulose

“…The combination of conductive polymer and carbon also has been found to improve the conductivity of cellulosic substrates. Mao et al (2018) studied the coating of carbon nanotubes/polyaniline nanocomposite layers on cellulosic paper and found that the conductivity of electro-surface-coated paper could reach 46.4 S/cm when the CNTs content was 10 wt %.…”