Cargando…

The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites

This study explores the reprocessing behavior of polypropylene-sugarcane bagasse biocomposites using neat and chemically treated bagasse fibers (20 wt.%). Biocomposites were reprocessed 5 times using the extrusion process followed by injection molding. The mechanical properties indicate that microfi...

Descripción completa

Detalles Bibliográficos
Autores principales: Correa-Aguirre, Juan P., Luna-Vera, Fernando, Caicedo, Carolina, Vera-Mondragón, Bairo, Hidalgo-Salazar, Miguel A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407174/
https://www.ncbi.nlm.nih.gov/pubmed/32605116
http://dx.doi.org/10.3390/polym12071440
_version_ 1783567565194264576
author Correa-Aguirre, Juan P.
Luna-Vera, Fernando
Caicedo, Carolina
Vera-Mondragón, Bairo
Hidalgo-Salazar, Miguel A.
author_facet Correa-Aguirre, Juan P.
Luna-Vera, Fernando
Caicedo, Carolina
Vera-Mondragón, Bairo
Hidalgo-Salazar, Miguel A.
author_sort Correa-Aguirre, Juan P.
collection PubMed
description This study explores the reprocessing behavior of polypropylene-sugarcane bagasse biocomposites using neat and chemically treated bagasse fibers (20 wt.%). Biocomposites were reprocessed 5 times using the extrusion process followed by injection molding. The mechanical properties indicate that microfibers bagasse fibers addition and chemical treatments generate improvements in the mechanical properties, reaching the highest performance in the third cycle where the flexural modulus and flexural strength increase 57 and 12% in comparison with neat PP. differential scanning calorimetry (DSC) and TGA characterization show that bagasse fibers addition increases the crystallization temperature and thermal stability of the biocomposites 7 and 39 °C respectively, without disturbing the melting process of the PP phase for all extrusion cycles. The rheological test shows that viscosity values of PP and biocomposites decrease progressively with extrusion cycles; however, Cole–Cole plots, dynamic mechanical analysis (DMA), width at half maximum of tan delta peaks and SEM micrographs show that chemical treatments and reprocessing could improve fiber dispersion and fiber–matrix interaction. Based on these results, it can be concluded that recycling potential of polypropylene-sugarcane bagasse biocomposites is huge due to their mechanical, thermal and rheological performance resulting in advantages in terms of sustainability and life cycle impact of these materials.
format Online
Article
Text
id pubmed-7407174
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-74071742020-08-11 The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites Correa-Aguirre, Juan P. Luna-Vera, Fernando Caicedo, Carolina Vera-Mondragón, Bairo Hidalgo-Salazar, Miguel A. Polymers (Basel) Article This study explores the reprocessing behavior of polypropylene-sugarcane bagasse biocomposites using neat and chemically treated bagasse fibers (20 wt.%). Biocomposites were reprocessed 5 times using the extrusion process followed by injection molding. The mechanical properties indicate that microfibers bagasse fibers addition and chemical treatments generate improvements in the mechanical properties, reaching the highest performance in the third cycle where the flexural modulus and flexural strength increase 57 and 12% in comparison with neat PP. differential scanning calorimetry (DSC) and TGA characterization show that bagasse fibers addition increases the crystallization temperature and thermal stability of the biocomposites 7 and 39 °C respectively, without disturbing the melting process of the PP phase for all extrusion cycles. The rheological test shows that viscosity values of PP and biocomposites decrease progressively with extrusion cycles; however, Cole–Cole plots, dynamic mechanical analysis (DMA), width at half maximum of tan delta peaks and SEM micrographs show that chemical treatments and reprocessing could improve fiber dispersion and fiber–matrix interaction. Based on these results, it can be concluded that recycling potential of polypropylene-sugarcane bagasse biocomposites is huge due to their mechanical, thermal and rheological performance resulting in advantages in terms of sustainability and life cycle impact of these materials. MDPI 2020-06-27 /pmc/articles/PMC7407174/ /pubmed/32605116 http://dx.doi.org/10.3390/polym12071440 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Correa-Aguirre, Juan P.
Luna-Vera, Fernando
Caicedo, Carolina
Vera-Mondragón, Bairo
Hidalgo-Salazar, Miguel A.
The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title_full The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title_fullStr The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title_full_unstemmed The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title_short The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
title_sort effects of reprocessing and fiber treatments on the properties of polypropylene-sugarcane bagasse biocomposites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407174/
https://www.ncbi.nlm.nih.gov/pubmed/32605116
http://dx.doi.org/10.3390/polym12071440
work_keys_str_mv AT correaaguirrejuanp theeffectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT lunaverafernando theeffectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT caicedocarolina theeffectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT veramondragonbairo theeffectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT hidalgosalazarmiguela theeffectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT correaaguirrejuanp effectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT lunaverafernando effectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT caicedocarolina effectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT veramondragonbairo effectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites
AT hidalgosalazarmiguela effectsofreprocessingandfibertreatmentsonthepropertiesofpolypropylenesugarcanebagassebiocomposites