da Silva, Adriano Ferreira, Donato, Mariane Cristina, da Silva, Mauricio oliveira, de Sousa, Severino Denicio Goncalves, Simao, Thelma Renata Parada, Kietzer, Katia Simone, Liberti, Edson Aparecido, and Frank, Patrick William
International Journal of Morphology. Jan-Feb, 2023, Vol. 41 Issue 1, p73, 6 p.
Polymers [Polymers (Basel)] 2023 Mar 21; Vol. 15 (6). Date of Electronic Publication: 2023 Mar 21.
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.
Robertson EP, Walsh DP, Martin J, Work TM, Kellogg CA, Evans JS, Barker V, Hawthorn A, Aeby G, Paul VJ, Walker BK, Kiryu Y, Woodley CM, Meyer JL, Rosales SM, Studivan M, Moore JF, Brandt ME, and Bruckner A
Journal of environmental management [J Environ Manage] 2023 Mar 21; Vol. 337, pp. 117668. Date of Electronic Publication: 2023 Mar 21.