Cargando…

The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers

The paper presents a comparative analysis of two extrusion methods of biocomposites with a poly(3-hydroxybutyrate-co-3-hydroxyvalerate acid) (PHBV) matrix filled with flax and hemp fibers in terms of biopolymer production, its processing in the further injection process, and an evaluation of the mec...

Descripción completa

Detalles Bibliográficos
Autores principales: Janowski, Grzegorz, Frącz, Wiesław, Bąk, Łukasz, Trzepieciński, Tomasz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785153/
https://www.ncbi.nlm.nih.gov/pubmed/36559736
http://dx.doi.org/10.3390/polym14245370
_version_ 1784857979564064768
author Janowski, Grzegorz
Frącz, Wiesław
Bąk, Łukasz
Trzepieciński, Tomasz
author_facet Janowski, Grzegorz
Frącz, Wiesław
Bąk, Łukasz
Trzepieciński, Tomasz
author_sort Janowski, Grzegorz
collection PubMed
description The paper presents a comparative analysis of two extrusion methods of biocomposites with a poly(3-hydroxybutyrate-co-3-hydroxyvalerate acid) (PHBV) matrix filled with flax and hemp fibers in terms of biopolymer production, its processing in the further injection process, and an evaluation of the mechanical and functional properties of the products. Biocomposites containing 15% by weight of the filler were produced using single- and twin-screw extruders. The biocomposites were then processed by injection molding and then, among other things, the pressures in the mold cavity during processing were analyzed. The produced samples were tested by means of the following tests: uniaxial tensile strength, hardness, and impact tensile strength. The biocomposite’s microstructure was also analyzed using scanning electron microscopy (SEM), as were the shrinkage and water absorption of the manufactured products. In addition, thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) tests were performed. It was found that the extrusion method changed significantly the geometry of the filler fibers and the processing capabilities of the manufactured materials. Significant differences in the mechanical and functional properties of the obtained biocomposite products were also found. On their basis, the advantages and disadvantages of both extrusion methods were discussed. Most of the obtained properties of injection products indicate the choice of single-screw extrusion. The products were characterized by slightly better mechanical properties and lower processing shrinkage. In turn, composites obtained by the screw method were characterized by lower water absorption and lower viscosity of the composite during injection molding.
format Online
Article
Text
id pubmed-9785153
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-97851532022-12-24 The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers Janowski, Grzegorz Frącz, Wiesław Bąk, Łukasz Trzepieciński, Tomasz Polymers (Basel) Article The paper presents a comparative analysis of two extrusion methods of biocomposites with a poly(3-hydroxybutyrate-co-3-hydroxyvalerate acid) (PHBV) matrix filled with flax and hemp fibers in terms of biopolymer production, its processing in the further injection process, and an evaluation of the mechanical and functional properties of the products. Biocomposites containing 15% by weight of the filler were produced using single- and twin-screw extruders. The biocomposites were then processed by injection molding and then, among other things, the pressures in the mold cavity during processing were analyzed. The produced samples were tested by means of the following tests: uniaxial tensile strength, hardness, and impact tensile strength. The biocomposite’s microstructure was also analyzed using scanning electron microscopy (SEM), as were the shrinkage and water absorption of the manufactured products. In addition, thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) tests were performed. It was found that the extrusion method changed significantly the geometry of the filler fibers and the processing capabilities of the manufactured materials. Significant differences in the mechanical and functional properties of the obtained biocomposite products were also found. On their basis, the advantages and disadvantages of both extrusion methods were discussed. Most of the obtained properties of injection products indicate the choice of single-screw extrusion. The products were characterized by slightly better mechanical properties and lower processing shrinkage. In turn, composites obtained by the screw method were characterized by lower water absorption and lower viscosity of the composite during injection molding. MDPI 2022-12-08 /pmc/articles/PMC9785153/ /pubmed/36559736 http://dx.doi.org/10.3390/polym14245370 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Janowski, Grzegorz
Frącz, Wiesław
Bąk, Łukasz
Trzepieciński, Tomasz
The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title_full The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title_fullStr The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title_full_unstemmed The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title_short The Effect of the Extrusion Method on Processing and Selected Properties of Poly(3-hydroxybutyric-co-3-hydroxyvaleric Acid)-Based Biocomposites with Flax and Hemp Fibers
title_sort effect of the extrusion method on processing and selected properties of poly(3-hydroxybutyric-co-3-hydroxyvaleric acid)-based biocomposites with flax and hemp fibers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785153/
https://www.ncbi.nlm.nih.gov/pubmed/36559736
http://dx.doi.org/10.3390/polym14245370
work_keys_str_mv AT janowskigrzegorz theeffectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT fraczwiesław theeffectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT bakłukasz theeffectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT trzepiecinskitomasz theeffectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT janowskigrzegorz effectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT fraczwiesław effectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT bakłukasz effectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers
AT trzepiecinskitomasz effectoftheextrusionmethodonprocessingandselectedpropertiesofpoly3hydroxybutyricco3hydroxyvalericacidbasedbiocompositeswithflaxandhempfibers