Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

The use of wood residues in polymeric matrices is notable for promoting significant mechanical reinforcement of the matrix. Such composites are widely used in the development of new composite materials with tunable mechanical properties for a variety of applications. In this work, polymeric composit...

Full description

Saved in:
Bibliographic Details
Published in:Polymers & polymer composites 2021-10, Vol.29 (8), p.1135-1142
Main Authors: Mendes, Caroliny P, Fleming, Robson, Goncalves, Além-Mar B, da Silva, Michael J, Prataviera, Rogério, Cena, Cicero
Format: Article
Language:English
Subjects:
Cellulose
Composite materials
Deformation
Epoxy resins
Fourier transforms
Infrared analysis
Infrared spectroscopy
Lignin
Mechanical properties
Morphology
Particle size
Particulate composites
Polymer matrix composites
Raw materials
Residues
Sawdust
Scanning electron microscopy
Spectrum analysis
Tensile strength
Thermogravimetric analysis
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The use of wood residues in polymeric matrices is notable for promoting significant mechanical reinforcement of the matrix. Such composites are widely used in the development of new composite materials with tunable mechanical properties for a variety of applications. In this work, polymeric composites with epoxy resin as the polymeric matrix and Pinus elliottii wood residue as the reinforcement were obtained. The composites were obtained by adding wood residue (sawdust) with particle sizes of 0.30, 0.60, and 1.19 millimeters into an epoxy matrix to determine the best mechanical properties of the composite as a function of the particle size. The polymer/sawdust composites were characterized by scanning electron microscopy (SEM), Infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and stress–strain tests. SEM images revealed a smooth and homogeneous surface free of defects and holes. However, lateral profile images showed the presence of fine sawdust particles agglomerated and a considerable number of bubbles and cavities that could interfere in the mechanical properties of the composites. The FTIR characterization of the composite identified the main bands related to epoxy and lignin/cellulose chains. The results of the mechanical properties suggested that epoxy composites with sawdust can increase its tensile strength according to the sawdust particle size introduced into the matrix.
ISSN:0967-3911
1478-2391
DOI:10.1177/0967391120956504