Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136697
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dc.contributor.authorGUEDES, C. E. G.
dc.contributor.authorOLIVEIRA, D. N. P. S. de
dc.contributor.authorBEZERRA, J. B.
dc.contributor.authorPENIDO, C. A. F. de O.
dc.contributor.authorFERREIRA, N. S.
dc.contributor.authorBORGES, W. L.
dc.contributor.authorBUFALINO, L.
dc.contributor.authorSOUZA, T. M.
dc.date.accessioned2021-11-29T01:57:47Z-
dc.date.available2021-11-29T01:57:47Z-
dc.date.created2021-11-28
dc.date.issued2021
dc.identifier.citationJournal of Natural Fibers, v. 1, p. 1-14, 2021.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1136697-
dc.descriptionRecent investigations proposed alternatives for utilization of Açaí (Euterpe oleracea Mart.) fruit wastes, seeds, and lignocellulosic fibers. However, Açaí leaves may also be obtained without harvesting the palms and could be used in higher value-added products. Alkali reaction (1% and 5% of NaOH), different temperatures (70°C, 80°C, and 100°C), and bleaching were combined to produce fibres from the Açaí leaves. Scanning electron microscopy, X-ray diffraction, and thermogravimetry were used to evaluate the effect of treatments on fibers, whereas X-ray diffraction and calorimetry were employed to characterize Portland cement pastes containing fibers. Results indicated that Açaí leaves could be transformed into short-length fibers with improved degrading temperature. Alkali treatment at 5% sodium hydroxide (90°C) and bleaching increased fibers? crystallinity and showed efficiency in removing non-cellulosic components. Cement paste evaluation also indicated that fibers treated at 5% NaOH solution caused fewer changes in calorimetric profile and therefore present a greater potential for cement-based composites.
dc.language.isoeng
dc.rightsopenAccesseng
dc.subjectFiber morphology
dc.subjectCeramic matrix
dc.subjectPortland cement
dc.titleExploiting the Amazonian açaí palm leaves potential as reinforcement for cement composites through alkali and bleaching treatments.
dc.typeArtigo de periódico
dc.subject.thesagroAçaí
dc.subject.nalthesaurusBiomass
dc.subject.nalthesaurusThermal stability
dc.subject.nalthesaurusBiocomposites
riaa.ainfo.id1136697
riaa.ainfo.lastupdate2021-11-28
dc.contributor.institutionCARLOS EDUARDO GOUVEIA GUEDES, UNIFAP
dc.contributor.institutionDHIMITRIUS NEVES PARAGUASSÚ SMITH DE OLIVEIRA, POLITEC-APeng
dc.contributor.institutionJEFFERSON BEZERRA BEZERRA, UNIFAPeng
dc.contributor.institutionCIRO AUGUSTO FERNANDES DE OLIVEIRA PENIDO, POLITEC-APeng
dc.contributor.institutionNILSON SANTOS FERREIRA, UFSeng
dc.contributor.institutionWARDSSON LUSTRINO BORGES, CPAF-APeng
dc.contributor.institutionLINA BUFALINO, UFRAeng
dc.contributor.institutionTIAGO MARCOLINO SOUZA, UEAP.eng
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