Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/113411
Title: Rotational molding of polylactide (PLA) composites filled with copper slag as a waste filler from metallurgical industry
Authors: Barczewski, Mateusz
Hejna, Aleksander
Aniśko, Joanna
Andrzejewski, Jacek
Piasecki, Adam
Mysiukiewicz, Olga
Bąk, Małgorzata
Gapiński, Bartosz
Ortega Medina, Zaida Cristina 
UNESCO Clasification: 331209 Resistencia de materiales
331502 Cobre
Keywords: Copper Slag
Pla
Polylactide
Rotational Molding
Waste Filler
Issue Date: 2022
Journal: Polymer Testing 
Abstract: The research work carried out so far indicates the ever wider possibilities and demand for shaping composite products in the rotational molding technology. This trend was the main reason to use waste-based filler from the metallurgical process as a filler for manufacturing polylactide (PLA)-based remolded composites. Copper slag (CS) was introduced in the single-step processing method to PLA matrix at 5, 10, 20, and 35 wt%. The rotomolded composites with different filler content were subjected to in-depth structural analysis discussed in relationship with mechanical and thermomechanical properties changes. Evaluation of the composite structures by scanning electron microscopy (SEM) and 3D computed tomography (3D CT) analyses showed that incorporating up to 10 wt% of the filler did not cause adverse changes in the filler dispersion in the product volume, which was homogeneous. Lack of unfavorable structural changes in composites with concentrations of up to 20 wt% was related to the rheological properties of the composition. Except for series with the highest filler content (35 wt%), the produced composites were characterized by increased stiffness and hardness than rotomolded parts made from pure PLA. Despite the deterioration of the tensile strength of composite materials using higher filler concentrations, the mechanical performance of 5 and 10 wt% showed an acceptable level while increasing the stiffness by about 15% compared to neat PLA. Moreover, it was shown that the interfacial adhesion between PLA and CS, despite the lack of surface modification of the filler waste, was advantageous.
URI: http://hdl.handle.net/10553/113411
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2021.107449
Source: Polymer Testing[ISSN 0142-9418],v. 106, (Febrero 2022)
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