Multifunctional Nanocomposites between Different Carbon Nanostructures and Styrene Acrylic Latex

Abstract

This work describes the preparation, characterization and properties study of multifunctional nanocomposites between poly(styrene-co-butyl acrylate) latex and different carbon nanostructures: iron-filled carbon nanotubes (CNT), graphene or graphene oxide. Different approaches were employed to prepare stable aqueous dispersions of these nanostructures, according to the specificity of each nanomaterial. The nanocomposites were characterized by Raman and Fourier transform infrared (FTIR) spectroscopy, as well as by scanning probe microscopy (SPM) at different modes, providing information regarding the nature of the interaction between the carbon nanostructures and the polymeric matrix. The synergistic effect between the components results in improved mechanical, electrical, thermal and chemical properties of the nanocomposites, when compared to the neat polymer. In addition, the iron species into CNT cavities provide an interesting and unusual magnetic property of the nanocomposites. Results show that the properties of the nanocomposites can be modulated aiming desired application by simply selecting the amount and/or the kind of carbon nanostructure. This work provides information on the features of the three systems used, showing the range of properties that can be covered by using the three nano-fillers.

Ternary system based on polyaniline, graphene, and acrylic matrix applied to thermoelectric systems

“…It was not possible to obtain measurements of the pure acrylic resin (ACR), since the used equipment does not have a configuration for measuring materials with very low electrical conductivity. Therefore, the conductivity of the pure acrylic polymer was extracted from the literature, being nonconductive, with resistivity values in the range of 10 12 Ω.cm 53,54 …”

“…Therefore, the conductivity of the pure acrylic polymer was extracted from the literature, being nonconductive, with resistivity values in the range of 10 12 Ω.cm. 53,54 The ACR samples with PANI and GRs (GA and GB) showed an increase in electrical conductivity of many orders of magnitude, compared to the pure ACR (from 10 À12 to 10 À1 S.cm À1 ). This improvement in the electrical property of the composites suggests a good dispersion of the fillers in the ACR.…”

Chemical degradation of reinforced epoxy‐cement composites under CO2‐rich environments

“…After 10 min of cooling, the mixture was stirred again for 10 min with the Ultra‐Turrax. Air bubbles were removed from the mixture using an ultrasonic bath for 60 min .…”

Chemical safety using functionalized carbon nanomaterials: neutralization and detection of organophosphorus compounds

“…195 The association of polymers with nanostructures, such as graphene and CNTs, has proved to promote the enhancement of mechanical properties (tensile, strength, modulus, etc. ), 196,197 electrical 198 and thermal conductivities, 199 as well as the sensing capability of these materials. 200 Guoyue Shi et al 201 developed an electrochemical sensor, based on a MWCNTs and poly(acrylamide) nanocomposite, named as MWCNTs-PAAM, for the detection of methyl parathion.…”

“…195 The association of polymers with nanostructures, such as graphene and CNTs, has proved to promote the enhancement of mechanical properties (tensile, strength, modulus, etc. ), 196,197 electrical 198 and thermal conductivities, 199 as well as the sensing capability of these materials. 200…”