Influence of chemical pretreatments on plant fiber cell wall and their implications on the appearance of fiber dislocations

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorDurães, Alisson Farley Soares-
Autor(es): dc.creatorMoulin, Jordão Cabral-
Autor(es): dc.creatorDias, Matheus Cordazzo-
Autor(es): dc.creatorMendonça, Maressa Carvalho-
Autor(es): dc.creatorDamásio, Renato Augusto Pereira-
Autor(es): dc.creatorThygesen, Lisbeth Garbrecht-
Autor(es): dc.creatorTonoli, Gustavo Henrique Denzin-
Data de aceite: dc.date.accessioned2026-02-09T12:46:10Z-
Data de disponibilização: dc.date.available2026-02-09T12:46:10Z-
Data de envio: dc.date.issued2021-08-23-
Data de envio: dc.date.issued2021-08-23-
Data de envio: dc.date.issued2020-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/46930-
Fonte completa do material: dc.identifierhttps://doi.org/10.1515/hf-2019-0237-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1167911-
Descrição: dc.descriptionThe cell wall of plant fibers may contain irregular regions called dislocations. This study evaluated the effect of chemical pretreatment as a mechanochemical disloca-tion initiator in unbleached and bleached Eucalyptus sp. fibers. Accordingly, bleached and unbleached pulps of eucalyptus were subjected to chemical pretreatments with sodium hydroxide at concentrations of 5% for 2 h, 10% for 1 h and 10% for 2 h or with hydrogen peroxide. The extent of dislocations was evaluated by polarized light microscopy. Based on the observation, an index of dislocations (ID) expressing their ratio of cell wall as per two-dimensional (2D) imaging and their angle relative to the longitudinal direction of the fiber were estimated. Chemical pretreat-ments increased the ID for bleached and unbleached fib-ers as well as increased the changes in the curl of bleached and unbleached fibers for chemical pretreatments. Chemi-cal pretreatment extracted the hemicellulose of the fiber cell wall causing some fiber to curl, which in turn gener-ated new dislocations and modifications in the dislocation angles which may be useful for improving the deconstruc-tion process of the cellulose fibers.-
Idioma: dc.languageen-
Publicador: dc.publisherWalter de Gruyter GmbH-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceHolzforschung-
Palavras-chave: dc.subjectFiber fragmentation-
Palavras-chave: dc.subjectKinks-
Palavras-chave: dc.subjectLignocellulose-
Palavras-chave: dc.subjectSlip plane-
Palavras-chave: dc.subjectVegetable fibers-
Palavras-chave: dc.subjectFibras vegetais-
Palavras-chave: dc.subjectFibra - Fragmentação-
Palavras-chave: dc.subjectLignocelulose-
Palavras-chave: dc.subjectTratamentos químicos-
Título: dc.titleInfluence of chemical pretreatments on plant fiber cell wall and their implications on the appearance of fiber dislocations-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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