Affiliation:
1. Postgraduate Program in Materials Science and Engineering, Technology Center Federal University of Piauí Teresina Brazil
2. Graduation in Materials Engineering, Technology Center Federal University of Piauí Teresina Brazil
3. Postgraduate Program in Materials Science and Engineering, Science and Technology Center Federal University of Campina Grande Campina Grande Brazil
Abstract
AbstractAdditive manufacturing, which has become popular in recent years, is the process of joining materials through the deposition of layers to form parts based on data from a 3D model and fused deposition modeling. The search for biodegradable materials for the production of filaments for 3D printing is increasing and opening up possibilities for the development of new sustainable products, including the use of lignocellulosic waste in the formulation. Therefore, the present work aims to develop polymeric filaments based on polybutylene adipate terephthalate and low content (2.5 and 5 wt%) of peanut and soybean shells and evaluate their potential for 3D printing. The charges were characterized in terms of chemical composition. Tensile and dimensional variation tests were performed on samples manufactured from two different filling orientations: −45/45° and 0/90°. The printability of the filament was based on the manufacture of prototypes of agricultural tubes that were also characterized by thermogravimetry and their morphology through scanning electron and optical microscopy. Both natural residues significantly (p < 0.05) affected the sample dimensions and mechanical properties. However, the filling orientation difference was insignificant (p > 0.05). The filaments produced showed good processability, thermal and dimensional stability. The samples produced showed a satisfactory surface finish without exposing load agglomerates. These results demonstrate the feasibility of using lignocellulosic fillers, such as peanut and soybean shells, in additive manufacturing and indicate the possibility of producing parts with varied geometries.Highlights
Use of lignocellulosic residues in biodegradable filaments.
The filament produced with fillers of peanut and soybean shells showed good processability.
Filament fracture depends on the raster angle.
It was possible to produce tubes with good surface quality and mechanical properties.
Funder
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Fundação de Amparo à Pesquisa do Estado do Piauí
Subject
Materials Chemistry,Polymers and Plastics,General Chemistry,Ceramics and Composites