Obtaining nanofibers from curauá and sugarcane bagasse fibers using enzymatic hydrolysis followed by sonication

Autor:	Luiz H. C. Mattoso, Anand R. Sanadi, Adriana de Campos, Ana Carolina Corrêa, José Manoel Marconcini, Alain Dufresne, David Cannella, Pierre Cassland, E. M. Teixeira
Rok vydání:	2013
Předmět:	Materials science Polymers and Plastics biology Sonication Cellulase chemistry.chemical_compound Crystallinity chemistry Chemical engineering Cellulosic ethanol Nanofiber Enzymatic hydrolysis biology.protein Cellulose Composite material Bagasse
Zdroj:	Cellulose. 20:1491-1500
ISSN:	1572-882X 0969-0239
Popis:	This paper is an initial study of the implementation of two new enzymes, an endoglucanase and a concoction of hemicellulases and pectinases to obtain cellulosic nanoparticles. In this study, curaua and sugarcane bagasse were dewaxed and bleached prior to enzymatic action for 72 h at 50 °C, and then followed by sonication. The concentration between these two enzymes was varied, and for the concentrations and time of enzymatic treatment used, subsequent sonication was necessary for cellulose nanoparticle release. It was easier to extract cellulose nanofibers from sugarcane bagasse which resulted in nanoparticles without damage of cellulose chains. On the other hand, curaua fibers needed a higher concentration of enzymes and the nanofibers obtained displayed a decrease of crystallinity suggesting that the cellulose structure was compromized. For both fibers, cellulose nanocrystals (single crystals) and larger diameter nanofibers were attained after the sonication.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d8befc64b91238cea9e0c62332c16fc https://doi.org/10.1007/s10570-013-9909-3 Zobrazit plný text záznamu Full text from SpringerLink