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Registros recuperados: 11 | |
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CORRÊA, A. C.; CARMONA, V. B.; SIMÃO, J. A.; GALVANI, F.; MARCONCINI, J. M.; MATTOSO, L. H. C.. |
Cellulose nanocrystals (CNC) were obtained from macauba and gravata fibers. Macauba (or Bocaiuva) is a palm tree found throughout most of Brazil and Gravata is an abundant kind of bromeliab with 1-2m long leaves, found in Brazilian Pantanal and Cerrado. The raw fibers of both fibers were mercerized with NaOH solutions and bleached; they were then submitted to acid hydrolysis using H2SO4 at 45 ?C, varying the hydrolysis time from 15 up to 75 min. The fibers were analyzed by X-ray diffraction (XRD), FTIR Spectroscopy, scanning electron microscopy (SEM) and thermal stability by thermogravimetric analysis (TG). XRD patterns did not present changes in the crystal structure of cellulose after mercerization, but it was observed a decrease of hemicellulose and... |
Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Celulose; Macaúba; Fibra Vegetal; Gravata; Cellulose; Nanocrystals; Plant fibers; Acrocomia. |
Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114101 |
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Registros recuperados: 11 | |
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