Optimizing cellulose microfibrillation with NaOH pretreatments for unbleached Eucalyptus pulp

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMartins, Caio Cesar Nemer-
Autor(es): dc.creatorDias, Matheus Cordazzo-
Autor(es): dc.creatorMendonça, Maressa Carvalho-
Autor(es): dc.creatorDurães, Alisson Farley Soares-
Autor(es): dc.creatorSilva, Luiz Eduardo-
Autor(es): dc.creatorFélix, Jefferson Resende-
Autor(es): dc.creatorDamásio, Renato Augusto Pereira-
Autor(es): dc.creatorTonoli, Gustavo Henrique Denzin-
Data de aceite: dc.date.accessioned2026-02-09T11:46:43Z-
Data de disponibilização: dc.date.available2026-02-09T11:46:43Z-
Data de envio: dc.date.issued2022-08-04-
Data de envio: dc.date.issued2022-08-04-
Data de envio: dc.date.issued2020-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/50834-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s10570-021-04221-x-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1147255-
Descrição: dc.descriptionMicrofibrillated cellulose (MFC) is a form of biopolymer that stands out because of its versatile use. However, the process of obtaining MFC requires adjustments to provide the increase of microfibrillation in industrial scale. Thus, this study aimed to apply pretreatments with NaOH in unbleached Eucalyptus sp. fibers to optimize the microfibrilation process, in order to evaluate the effect of drying and not drying the fibers after pretreatments for reduction of energy consumption. Treatments of MFC with NaOH at 5% with 2 h of reaction and by 10 wt% were evaluated for the resulting morphology, chemical composition, and energy consumption. The length and width of the pulp fibers pretreated with NaOH decreased significantly, mainly with hasher pretreatments. Pretreating fibers with 5 wt% NaOH for 2 h increased the water retention value (WRV), in addition to presenting the lowest energy consumption for fibrillation, promoting energy savings of up to 48%. Pulps that were non-dried after the NaOH pretreatments resulted in easier microfibrillation and lower energy consumption when compared to dried pulp, which shows the negative impact of drying on the fibers to obtain MFC.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceCellulose-
Palavras-chave: dc.subjectEnergy consumption-
Palavras-chave: dc.subjectFibers drying-
Palavras-chave: dc.subjectHornification-
Palavras-chave: dc.subjectMicrofibrillated cellulose-
Título: dc.titleOptimizing cellulose microfibrillation with NaOH pretreatments for unbleached Eucalyptus pulp-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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