Please use this identifier to cite or link to this item:
|Title:||Exploiting the Amazonian açaí palm leaves potential as reinforcement for cement composites through alkali and bleaching treatments.|
|Authors:||GUEDES, C. E. G.|
OLIVEIRA, D. N. P. S. de
BEZERRA, J. B.
PENIDO, C. A. F. de O.
FERREIRA, N. S.
BORGES, W. L.
SOUZA, T. M.
|Affiliation:||CARLOS EDUARDO GOUVEIA GUEDES, UNIFAP|
JEFFERSON BEZERRA BEZERRA, UNIFAP
CIRO AUGUSTO FERNANDES DE OLIVEIRA PENIDO, POLITEC-AP
NILSON SANTOS FERREIRA, UFS
DHIMITRIUS NEVES PARAGUASSÚ SMITH DE OLIVEIRA, POLITEC-AP
LINA BUFALINO, UFRA
TIAGO MARCOLINO SOUZA, UEAP.
WARDSSON LUSTRINO BORGES, CPAF-AP
|Citation:||Journal of Natural Fibers, v. 1, p. 1-14, 2021.|
|Description:||Recent 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.|
|Type of Material:||Artigo de periódico|
|Appears in Collections:||Artigo em periódico indexado (CPAF-AP)|
Files in This Item:
|CPAF-AP-2021-Exploiting-The-Amazonian-Acai.pdf||14,22 MB||Adobe PDF|