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Use este identificador para citar ou linkar para este item: http://repositorio.unb.br/handle/10482/43822
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dc.contributor.authorKataoka, Lays Furtado de Medeiros Souza-
dc.contributor.authorHidalgo Falla, Maria Del Pilar-
dc.contributor.authorLuz, Sandra Maria da-
dc.date.accessioned2022-05-30T13:50:01Z-
dc.date.available2022-05-30T13:50:01Z-
dc.date.issued2021-06-08-
dc.identifier.citationKATAOKA, Lays Furtado de Medeiros Souza; HIDALGO FALLA, Maria Del Pilar; Luz, Sandra Maria da. The influence of potassium hydroxide concentration and reaction time on the extraction cellulosic jute fibers. Journal of Natural Fibers, 2021. DOI: https://doi.org/10.1080/15440478.2021.1934934.pt_BR
dc.identifier.urihttps://repositorio.unb.br/handle/10482/43822-
dc.language.isoInglêspt_BR
dc.publisherTaylor & Francispt_BR
dc.rightsAcesso Restritopt_BR
dc.titleThe influence of potassium hydroxide concentration and reaction time on the extraction cellulosic jute fiberspt_BR
dc.typeArtigopt_BR
dc.subject.keywordAlfa celulosept_BR
dc.subject.keywordHolocelulosept_BR
dc.subject.keywordFibra de jutapt_BR
dc.subject.keywordPlanejamento fatorialpt_BR
dc.subject.keywordAlcalinizaçãopt_BR
dc.subject.keywordPropriedades térmicaspt_BR
dc.identifier.doihttps://doi.org/10.1080/15440478.2021.1934934pt_BR
dc.relation.publisherversionhttps://www.tandfonline.com/doi/full/10.1080/15440478.2021.1934934pt_BR
dc.description.abstract1A common method used to obtain cellulosic fibers is alkalinization with NaOH. Depending on NaOH content, treatments remove significant quantities of lignin and hemicellulose as small molecules. In biorefineries, where the preservation of components is needed, KOH may prevent hemicellulose chain formation. Here, we studied the efficacy of obtaining cellulosic fibers from jute using KOH. Jute fibers are about 84.2% holocellulose, which corresponds to 59.5% alpha cellulose and 24.7% hemicellulose. To obtain high cellulosic fiber yields from jute, effects of pulping with different KOH concentrations and altering reaction times were studied using factorial planning (22). Afterward, in natura and treated fibers were characterized via Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG) and derivative thermogravimetry. Holocellulose sample components were obtained by removing lignin. Factors including concentration and reaction time individually significantly affected cellulose yield. Alpha cellulose was produced when higher levels of the factorial planning conditions were applied. Ideal parameters for cellulose extraction included the addition of 10% (w/v) KOH for 3 h. FTIR analysis was used to ensure that lignocellulosic components were removed by fiber treatment. TG showed that treated fibers were thermally stable at temperatures close to, or higher than, in natura fibers.pt_BR
dc.identifier.orcidhttps://orcid.org/ 0000-0003-1766-7509pt_BR
dc.identifier.orcidhttps://orcid.org/ 0000-0002-2223-0021pt_BR
dc.description.unidadeFaculdade UnB Gama (FGA)-
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