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Valorization of Arbutus unedo L. Bark Through Chemical Composition Analysis, Liquefaction, and Bio-Based Foam Production

2024-12-04Journal article Open access
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dc.contributor.authorCruz-Lopes, Luísa
dc.contributor.authorDulyanska, Yuliya
dc.contributor.authorLopes, Rogério
dc.contributor.authorDomingos, idalina
dc.contributor.authorFerreira, José
dc.contributor.authorEsteves, Bruno
dc.date.accessioned2025-01-07T11:43:30Z
dc.date.available2025-01-07T11:43:30Z
dc.date.issued2024-12-04
dc.date.updated2024-12-21T21:28:35Z
dc.description.abstractArbutus unedo (strawberry tree) is a small Mediterranean tree capable of vigorous regrowth after disturbances like fire. Traditionally used for biomass fuel, its bark and branches hold potential for higher-value products through ecovalorization into liquid mixtures that could replace petroleum-based materials. This study aimed to explore the chemical composition of various components of Arbutus unedo and to produce a liquefied material from its internal (IB) and external bark (EB). Chemical compositions of internal and external bark were determined using TAPPI standards including ash, extractive content, lignin, and cellulose. Metal cations were analyzed by ICP. Liquefaction of bark was optimized in a PARR reactor, evaluating factors such as particle size, temperature, and time, and the best polyols were monitored by FTIR-ATR. Polyurethane foams were made with internal and external bark materials liquefied by polymerization with isocyanate, a catalyst, and water as a blowing agent. Results showed that EB has a higher extractive and lignin content, while IB contains more cellulose. Liquefaction yields were higher for IB (74%) than EB (68%), with IB yielding polyols that produced stronger and more resilient foams with higher compressive strength and modulus of elasticity. Mechanical properties of the foams were influenced by the NCO/OH ratio and catalyst levels. Overall, the internal bark demonstrated superior performance for foam production, highlighting its potential as an eco-friendly alternative to petroleum-derived materials.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/agronomy14122893pt_PT
dc.identifier.slugcv-prod-4244625
dc.identifier.urihttp://hdl.handle.net/10400.19/8709
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectArbutus unedopt_PT
dc.subjectliquefactionpt_PT
dc.subjectpolyurethane foampt_PT
dc.subjectchemical compositionpt_PT
dc.subjectecovalorizationpt_PT
dc.titleValorization of Arbutus unedo L. Bark Through Chemical Composition Analysis, Liquefaction, and Bio-Based Foam Productionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue12pt_PT
oaire.citation.startPage2893pt_PT
oaire.citation.titleAgronomypt_PT
oaire.citation.volume14pt_PT
person.familyNameGonçalves Oliveira Valente da Cruz-Lopes
person.familyNameDomingos
person.familyNameFerreira
person.familyNameEsteves
person.givenNameLuísa Paula
person.givenNameidalina
person.givenNameJosé
person.givenNameBruno
person.identifier2119255
person.identifier.ciencia-id7916-0833-5B38
person.identifier.ciencia-id7116-E1DE-88E7
person.identifier.ciencia-idB81E-BE45-E128
person.identifier.ciencia-id521B-63A7-B248
person.identifier.orcid0000-0001-6502-7202
person.identifier.orcid0000-0002-4308-1563
person.identifier.orcid0000-0001-7596-8065
person.identifier.orcid0000-0001-6660-3128
person.identifier.ridC-2173-2012
person.identifier.scopus-author-id24281086400
person.identifier.scopus-author-id18133647300
person.identifier.scopus-author-id57202554441
rcaap.cv.cienciaid521B-63A7-B248 | Bruno Miguel Morais Lemos Esteves
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationfa1274f5-f7f8-4afd-8ed8-5f988d6c7226
relation.isAuthorOfPublication50134ab7-55eb-4e8a-a5ea-5cc54b1468e3
relation.isAuthorOfPublication7d09c228-3415-4272-9299-89c6951565d7
relation.isAuthorOfPublicationa3351493-41e8-4758-acae-39e3382d0b04
relation.isAuthorOfPublication.latestForDiscoverya3351493-41e8-4758-acae-39e3382d0b04

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