Work

Composites with recovered polystyrene reinforced with pine or poplar residues following lignin extraction

Year: 2025

Type: article

Abstract: Sustainable composites were produced by recycling polystyrene (PS) and pine and poplar fiber residues remaining after lignin extraction. Polystyrene was dissolved in acetone and reinforced with wood fiber residues at 10%, 20% and 30%. The mixture was dried at 100 °C for 2 hr, granulated, and pressed at 190 °C under 5 MPa for 20 minutes. Characterizations of samples were performed according to physical (ASTM D1037 for water resistance and ASTM 7032-21 for density measurement), mechanical (ASTM D638 for tensile, ASTM D790 for flexural), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) analyses. The addition of fiber residue increased (up to 6.7%) the density but decreased the water absorption (WA) (up to 22%) and thickness swelling (TSW) (up to 12%). Fiber residue increased tensile strength (TS) by 46 to 167% and flexural strength (FS) by 45 to 82%. However, it decreased tensile modulus (TM) by 0 to 58% and flexural modulus (FM) by 3 to 12% (excluding pine). However, pine fiber residue increased FM by 2 to 19%. SEM analyses revealed homogeneous distribution of fiber residues.

Source: BioResources

DOI: 10.15376/biores.20.4.9184-9207

Author: Orhan Kelleci

Institution: Bolu Abant İzzet Baysal University

Language: English

Topic: Natural Fiber Reinforced Composites

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $1,452