Influence of blending protocol on the mechanical, rheological, and electromagnetic properties of <scp>PC</scp>/<scp>ABS</scp>/<scp>ABS‐<i>g</i>‐MAH</scp> blend‐based <scp>MWCNT</scp> nanocomposites

Anjos, Erick Gabriel Ribeiro dos; Braga, Natália Ferreira; Ribeiro, Bruno; Escanio, Camila Alves; Cardoso, Andreza de Moura; Marini, Juliano; Antonelli, Eduardo; Passador, Fábio Roberto

doi:10.1002/app.51946

Cited by 10 publications

(14 citation statements)

References 43 publications

(160 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They observed an improvement in the dielectric properties of the composites in terms of the loss factor with increasing temperature and filler concentration, as well as a beneficial effect on the improvement of the tensile strength and a decrease in the impact strength. The presented results were also confirmed by other researchers [ 22 , 23 , 24 , 25 ]. Graphene nanoplates can also be successfully introduced into PC/ABS to improve the thermal conductivity of composites [ 26 , 27 ].…”

Section: Introductionsupporting

confidence: 92%

Polymer Composites Based on Polycarbonate/Acrylonitrile-Butadiene-Styrene Used in Rapid Prototyping Technology

2023

View full text Add to dashboard Cite

As part of this work, polymer composites based on polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) were obtained and used in 3D printing technology, particularly Melted Extrusion Modeling (MEM) technology. The influence of selected fillers on the properties of the obtained composites was investigated. For this purpose, modified fillers such as silica modified with alumina, bentonite modified with a quaternary ammonium salt, and hybrid lignin/silicon dioxide filler were introduced into the PC/ABS matrix. In the first part of this work, polymer blends and their composites containing 1.5–3 wt. of the filler were used to obtain the filament using the proprietary technological line. Moldings for testing the performance properties were obtained using additive manufacturing techniques and injection molding. In the subsequent part of this work, rheological properties (mass flow rate (MFR) and viscosity curves) and mechanical properties (Rockwell hardness and static tensile strength with Young’s modulus) were examined. The structures of the obtained composites were also determined by scanning electron microscopy (SEM/EDS). The obtained results confirmed the results obtained from a wide-angle X-ray scattering analysis (WAXS). In turn, the physicochemical properties were characterized on the basis of the results of tests using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Based on the obtained results, it was found that the introduced modified additives had a significant impact on the processing and functional properties of the tested composites.

show abstract

Section: Introductionsupporting

confidence: 92%

Polymer Composites Based on Polycarbonate/Acrylonitrile-Butadiene-Styrene Used in Rapid Prototyping Technology

2023

View full text Add to dashboard Cite

show abstract

“…The nanofillers were dispersed individually and together (in the hybrids) first in the PC, then diluted with ABS and ABS‐ g ‐MAH in a second extrusion step. This blending protocol was adopted based on our previous work 18 . The nanocomposites were prepared using a co‐rotational twin‐screw extruder with D = 16 mm and L / D = 40 mm (AX Plásticos, model AX16:40DR).…”

Section: Methodsmentioning

confidence: 99%

“…In recent works of our research group, the thermal, electrical, mechanical, and EMI SE properties of PC/ABS/ABS‐ g ‐MAH/GNP 15 and PC/ABS/ABS‐ g ‐MAH/MWCNT 18 nanocomposites were studied. Based on the results of these works, we aimed to prepare PC/ABS/ABS‐ g ‐MAH blends‐based GNP/MWCNT hybrid nanocomposites using traditional industrial processes (extrusion and injection molding) focused on promoting the electrical and EMI SE properties of this blend.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of adding graphene nanoplates and carbon nanotubes in polycarbonate/acrylonitrile‐styrene‐butadiene copolymer blend

Anjos

Marini

Gomes

et al. 2022

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Hybrid nanocomposites of graphene nanoplates (GNP) and multi‐wall carbons nanotubes (MWCNT) might balance the best properties of these nanofillers and proportion synergistic effects to some specific properties as the electromagnetic shielding efficiency (EMI SE). These nanocomposites are being studied in many polymer matrixes, and a promising one should be the blend of polycarbonate (PC) and acrylonitrile‐styrene‐butadiene copolymer (ABS) that are applied mainly in the electronics industry. In this work, the hybrid nanocomposites of GNP/MWCNT in a PC/ABS/ABS‐g‐MAH polymer blend matrix were prepared by melt mixing, using extrusion and injection molding. The rheological, electromagnetic, thermal, and mechanical properties were analyzed to clarify the effect of using individually and both fillers. The morphologies of the hybrid nanocomposites revealed that the fillers were close to each other at the polymer matrix, interacting and forming some hybrid agglomerates. The effect of these hybrids agglomerates was confirmed as a deviation to solid‐like behavior (G′ > G″) in the rheological analyses, and the electrical percolation threshold was only achieved for the hybrid nanocomposites with higher content of nanofillers, 5 wt% of GNP and 1 wt% of MWCNT with electrical resistivity of 106 Ω cm. The same composition had a synergetic effect on the EMI SE properties (11 dB at 8.4 GHz), with a higher attenuation by absorption component, also in the dynamical mechanical, thermal behavior, increasing the Storage modulus and the statical mechanical properties increasing the shore D hardness, the elastic modulus, and ultimate tensile strength. The hybrid nanocomposites of GNP/MWCNT were promising materials for electronic housing with EMI SE properties.

show abstract

“…This blending protocol was adopted based on our previous work, seeking an adequate dispersion of the fillers at the PC phase of the matrix. 44 Polycarbonate and ABS were dried in a vacuum oven for 4 h at 90°C before processing. The extrusion processes were performed in a co-rotational twin-screw extruder with D = 16 mm and L/D = 40 mm (AX Plásticos, model AX16:40DR).…”

Section: Nanocomposites Processingmentioning

confidence: 99%

“…30 For EMI SE, many works pointed out that adding around 1.5-3.0 wt% of MWCNT into polymer/GNP nanocomposites might lead to commercial levels of EMI SE. 18,[32][33][34] In our previous work, the properties of MWCNT, 44 GNP, 9 and hybrid of GNP/ MWCNT 45 systems as nanofillers for PC/ABS blend melt mixed nanocomposites were studied. These works were conducted using the same GRM product.…”

Section: Introductionmentioning

confidence: 99%

Role of adding carbon nanotubes in the electric and electromagnetic shielding behaviors of three different types of graphene in hybrid nanocomposites

Anjos

Moura

Antonelli

et al. 2022

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

Graphene-related materials (GRM) are promising materials to improve mechanical, electrical, and optical polymer properties. Adding multi-wall carbon nanotubes (MWCNT) on GRM nanocomposites promotes synergistic effects on its electrical properties and electromagnetic interference shielding effectiveness (EMI SE). This study focused on evaluating the addition of MWCNT on three different polycarbonate (PC)/acrylonitrile butadiene styrene (ABS)/GRM nanocomposites. These hybrid nanocomposites were prepared by melt mixing using extrusion and injection-mold processes. The morphologies of the nanocomposites were evaluated by field emission gun scanning electron microscopy (FEG-SEM), and their proprieties were characterized by X-ray diffraction (XRD), oscillatory rheological, dielectric spectroscopy, and EMI SE analyses. The electrical behavior of all hybrid nanocomposites was anisotropic due to the injection-molded preparation process. The lateral size, thickness, and production method of the GRM were indicated to be critical factors for the electrical and EMI SE behaviors of these composites. The nanocomposites with GRM2, which had the smallest lateral size and thickness (graphene nanoplatelets), promoted total attenuation levels around 20 dB with 1.5 wt% of MWCNT, matching the EMI SE required for some commercial applications.

show abstract

Influence of blending protocol on the mechanical, rheological, and electromagnetic properties of PC/ABS/ABS‐g‐MAH blend‐based MWCNT nanocomposites

Cited by 10 publications

References 43 publications

Polymer Composites Based on Polycarbonate/Acrylonitrile-Butadiene-Styrene Used in Rapid Prototyping Technology

Polymer Composites Based on Polycarbonate/Acrylonitrile-Butadiene-Styrene Used in Rapid Prototyping Technology

Synergistic effect of adding graphene nanoplates and carbon nanotubes in polycarbonate/acrylonitrile‐styrene‐butadiene copolymer blend

Role of adding carbon nanotubes in the electric and electromagnetic shielding behaviors of three different types of graphene in hybrid nanocomposites

Contact Info

Product

Resources

About