Effect of phosphorylation on the production of cellulose nanofibrils from Eucalyptus sp

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorMulin, Lucas Braga-
Autor(es): dc.creatorMartins, Caio Cesar Nemer-
Autor(es): dc.creatorDias, Matheus Cordazzo-
Autor(es): dc.creatorSantos, Allan de Amorim dos-
Autor(es): dc.creatorMascarenhas, Adriano Reis Prazeres-
Autor(es): dc.creatorProfeti, Demetrius-
Autor(es): dc.creatorOliveira, Michel Picanço-
Autor(es): dc.creatorTonoli, Gustavo Henrique Denzin-
Autor(es): dc.creatorMoulin, Jordão Cabral-
Data de aceite: dc.date.accessioned2026-02-09T12:53:15Z-
Data de disponibilização: dc.date.available2026-02-09T12:53:15Z-
Data de envio: dc.date.issued2023-11-08-
Data de envio: dc.date.issued2023-11-08-
Data de envio: dc.date.issued2023-03-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/58514-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0926669022016569#:~:text=Phosphorylation%20leave%20a%20less%20energy,transparent%2C%20smooth%2C%20and%20hydrophobic.-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1170241-
Descrição: dc.descriptionOne of the bottlenecks in the industrial production of cellulose nanofibrils (CNFs) is its high energy cost. Several pretreatments have been researched in an attempt to reduce costs. A promising strategy is phosphorylation, which has the advantages of being low cost and non-toxic. This study aimed to produce CNFs with lower energy consumption and better characteristics, such as improved barrier properties and thermal resistance, by phosphorylation using different reagent concentrations and heat treatment times. For this, bleached Eucalyptus fibers were heat-treated at 150 °C using fiber/diammonium phosphate/urea molar mass ratios of 1:1:1 and 1:2:2 for 5, 20, and 40 min. Subsequently, the material was subjected to mechanical fibrillation to produce CNFs. Fiber quality was analyzed using thermogravimetry, Fourier-transform infrared spectroscopy, and X-ray diffraction. CNF samples were characterized using scanning electron microscopy, turbidimetry, contact angle analysis, wettability analysis, surface energy measurement, confocal microscopy, roughness analysis, mechanical tests, and transparency analysis. Energy consumption was measured during fibrillation. Phosphorylation was efficient in reducing energy consumption and resulted in the production of higher-quality CNFs as compared with no pretreatment. The best pretreatment conditions were molar mass ratio of 1:1:1 and time of reaction of 20 min-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceIndustrial Crops and Products-
Palavras-chave: dc.subjectEnergy consumption-
Palavras-chave: dc.subjectFiber phosphorylation-
Palavras-chave: dc.subjectNanotechnology-
Palavras-chave: dc.subjectChemical pre-treatment-
Título: dc.titleEffect of phosphorylation on the production of cellulose nanofibrils from Eucalyptus sp-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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