Ultrasound-Assisted Process to Increase the Hydrophobicity of Cellulose from Oat Hulls by Surface Modification with Vegetable Oils

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Autor(es): dc.contributorUniversity Institution Colegio Mayor de Antioquia (COLMAYOR)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Londrina (UEL)-
Autor(es): dc.creatorGil-Giraldo, Gina A.-
Autor(es): dc.creatorMantovan, Janaina-
Autor(es): dc.creatorMarim, Beatriz M.-
Autor(es): dc.creatorKishima, João O. F.-
Autor(es): dc.creatorBeluci, Natália C. L.-
Autor(es): dc.creatorMali, Suzana-
Data de aceite: dc.date.accessioned2025-08-21T21:49:11Z-
Data de disponibilização: dc.date.available2025-08-21T21:49:11Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/polysaccharides5030029-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300799-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300799-
Descrição: dc.descriptionCellulose obtained from oat hulls by bleaching with peracetic acid was modified, employing an ultrasound method that resulted in an esterification reaction with different vegetable oils (soybean, sunflower, and coconut) to produce modified cellulose (MC) with increased hydrophobicity. MC samples were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, scanning electron microscopy, and their wettability and oil and water absorption capacities. FTIR indicated that the reaction occurred with all oils, which was observed by forming a new band associated with ester carbonyl groups at 1747 cm−1. The modification did not affect the crystalline structure or surface morphology of the cellulose. MC samples modified with all oil sources showed a 6 to 9-fold decrease in water absorption capacity, a 3-fold increase in oil absorption capacity, and a higher affinity for nonpolar solvents. The modified samples adsorbed lower amounts of water at a slower rate. Different oil sources did not affect the main properties of MC. The ultrasonication-assisted process was not only effective in modifying cellulose by esterification with vegetable oils but was also an eco-friendly and simple strategy that does not require toxic reagents, providing reassurance of its sustainability.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFinanciadora de Estudos e Projetos-
Descrição: dc.descriptionFaculty of Health Sciences University Institution Colegio Mayor de Antioquia (COLMAYOR)-
Descrição: dc.descriptionDepartment of Chemistry and Biochemistry School of Technology and Sciences São Paulo State University (UNESP), SP-
Descrição: dc.descriptionDepartment of Biochemistry and Biotechnology CCE State University of Londrina, PR-
Descrição: dc.descriptionDepartment of Chemistry and Biochemistry School of Technology and Sciences São Paulo State University (UNESP), SP-
Descrição: dc.descriptionFinanciadora de Estudos e Projetos: 01.21.0126.00–REF. 0128/2021-
Formato: dc.format463-477-
Idioma: dc.languageen-
Relação: dc.relationPolysaccharides-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectbiomass-
Palavras-chave: dc.subjectesterification-
Palavras-chave: dc.subjectgreen chemistry-
Palavras-chave: dc.subjectlignocellulose-
Título: dc.titleUltrasound-Assisted Process to Increase the Hydrophobicity of Cellulose from Oat Hulls by Surface Modification with Vegetable Oils-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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