Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers

Hemp core is a lignocellulosic residue in the production chain of hemp strands. Huge amounts of hemp core are gathered annually in Europe (43,000 tons) with no major application end. Such lignocellulosic wastes have potential as filling or reinforcing material to replace synthetic fibers and wood fi...

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Authors: Vilaseca Morera, Fabiola, Serra Parareda, Ferran, Espinosa, Eduardo, Rodríguez, Alejandro, Mutjé Pujol, Pere, Delgado Aguilar, Marc
Format: article
Status:Published version
Publication Date:2020
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/21290
Online Access:http://hdl.handle.net/10256/21290
Access Level:Open access
Keyword:Polipropilè
Polypropylene
Flexió (Mecànica)
Flexion (mécanique)
Esforç i tensió
Strains and stresses
Fibres naturals
Natural fibers
Cànem -- Proves
Hemp -- Testing
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spelling Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core FibersVilaseca Morera, FabiolaSerra Parareda, FerranEspinosa, EduardoRodríguez, AlejandroMutjé Pujol, PereDelgado Aguilar, MarcPolipropilèPolypropyleneFlexió (Mecànica)Flexion (mécanique)Esforç i tensióStrains and stressesFibres naturalsNatural fibersCànem -- ProvesHemp -- TestingHemp core is a lignocellulosic residue in the production chain of hemp strands. Huge amounts of hemp core are gathered annually in Europe (43,000 tons) with no major application end. Such lignocellulosic wastes have potential as filling or reinforcing material to replace synthetic fibers and wood fibers in polymer composites. In this study, hemp core biomass was treated under different NaOH concentrations and then defibrated by means of Sprout Waldron equipment to obtain single fibers. Polypropylene matrix was reinforced up to 50 wt.% and the resulting hemp core fibers and the flexural properties were investigated. The results show that the flexural strength of composites increased with the intensity of NaOH treatment. The effect of NaOH was attributed to the removal of extractives and lignin in the fiber cell wall leading to improved interfacial adhesion characteristics. Besides, a methodology was established for the estimation of the intrinsic flexural strength of hemp core fibers. The intrinsic flexural strength of hemp core fibers was calculated to be 940 MPa for fibers treated at 10 wt.% of NaOH. In addition, a relationship between the lignin content and the intrinsic strength of the fibers was establishedThis research was funded by Spain’s DGICyT, MICINN within the framework of the Projects CTQ2016-78729-R and supported by the Spanish Ministry of Science and Education through the National Program FPU (Grant Number FPU14/02278)MDPI (Multidisciplinary Digital Publishing Institute)2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/21290http://hdl.handle.net/10256/21290Biomolecules, 2020, vol. 10, núm. 6, p. 823Articles publicats (D-EQATA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.3390/biom10060823info:eu-repo/semantics/altIdentifier/eissn/2218-273XAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:10256/212902026-05-29T05:05:01Z
dc.title.none.fl_str_mv Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
title Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
spellingShingle Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
Vilaseca Morera, Fabiola
Polipropilè
Polypropylene
Flexió (Mecànica)
Flexion (mécanique)
Esforç i tensió
Strains and stresses
Fibres naturals
Natural fibers
Cànem -- Proves
Hemp -- Testing
title_short Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
title_full Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
title_fullStr Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
title_full_unstemmed Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
title_sort Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers
dc.creator.none.fl_str_mv Vilaseca Morera, Fabiola
Serra Parareda, Ferran
Espinosa, Eduardo
Rodríguez, Alejandro
Mutjé Pujol, Pere
Delgado Aguilar, Marc
author Vilaseca Morera, Fabiola
author_facet Vilaseca Morera, Fabiola
Serra Parareda, Ferran
Espinosa, Eduardo
Rodríguez, Alejandro
Mutjé Pujol, Pere
Delgado Aguilar, Marc
author_role author
author2 Serra Parareda, Ferran
Espinosa, Eduardo
Rodríguez, Alejandro
Mutjé Pujol, Pere
Delgado Aguilar, Marc
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Polipropilè
Polypropylene
Flexió (Mecànica)
Flexion (mécanique)
Esforç i tensió
Strains and stresses
Fibres naturals
Natural fibers
Cànem -- Proves
Hemp -- Testing
topic Polipropilè
Polypropylene
Flexió (Mecànica)
Flexion (mécanique)
Esforç i tensió
Strains and stresses
Fibres naturals
Natural fibers
Cànem -- Proves
Hemp -- Testing
description Hemp core is a lignocellulosic residue in the production chain of hemp strands. Huge amounts of hemp core are gathered annually in Europe (43,000 tons) with no major application end. Such lignocellulosic wastes have potential as filling or reinforcing material to replace synthetic fibers and wood fibers in polymer composites. In this study, hemp core biomass was treated under different NaOH concentrations and then defibrated by means of Sprout Waldron equipment to obtain single fibers. Polypropylene matrix was reinforced up to 50 wt.% and the resulting hemp core fibers and the flexural properties were investigated. The results show that the flexural strength of composites increased with the intensity of NaOH treatment. The effect of NaOH was attributed to the removal of extractives and lignin in the fiber cell wall leading to improved interfacial adhesion characteristics. Besides, a methodology was established for the estimation of the intrinsic flexural strength of hemp core fibers. The intrinsic flexural strength of hemp core fibers was calculated to be 940 MPa for fibers treated at 10 wt.% of NaOH. In addition, a relationship between the lignin content and the intrinsic strength of the fibers was established
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
peer-reviewed
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/21290
http://hdl.handle.net/10256/21290
url http://hdl.handle.net/10256/21290
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3390/biom10060823
info:eu-repo/semantics/altIdentifier/eissn/2218-273X
dc.rights.none.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI (Multidisciplinary Digital Publishing Institute)
publisher.none.fl_str_mv MDPI (Multidisciplinary Digital Publishing Institute)
dc.source.none.fl_str_mv Biomolecules, 2020, vol. 10, núm. 6, p. 823
Articles publicats (D-EQATA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869409274241744896
score 15.812429

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