Cellulose Nanowhiskers Extracted from Tempo-Oxidized Curaua Fibers |
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| Authors: | Roberta Motta Neves Kirk Silveira Lopes Matheus GV Zimmermann Matheus Poletto Ademir J Zattera |
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| Affiliation: | 1. Post-graduate Program in Engineering of Processes and Technologies (PGEPROTEC), Technology and Polymer Materials Processes Group (NTPOL), University of Caxias do Sul (UCS) , Caxias do Sul, Brazil robertamneves@gmail.com https://orcid.org/0000-0002-7017-0852;3. Department of Chemical Engineering - CCET, University of Caxias do Sul (UCS) , Caxias do Sul, Brazil;4. Post-graduate Program in Mining, Metallurgical and Materials Engineering (PPGEM), Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre, Brazil;5. Department of Chemical Engineering - CCET, University of Caxias do Sul (UCS) , Caxias do Sul, Brazil https://orcid.org/0000-0003-2317-2713;6. Post-graduate Program in Engineering of Processes and Technologies (PGEPROTEC), Technology and Polymer Materials Processes Group (NTPOL), University of Caxias do Sul (UCS) , Caxias do Sul, Brazil https://orcid.org/0000-0002-2198-4323 |
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| Abstract: | ABSTRACT The objective of this study was to obtain nanowhiskers from bleached and milled curaua fibers. Nanowhiskers were obtained via a TEMPO system. TEM micrographies proved the fibers were obtained. FTIR analysis showed characteristic peaks of the oxidation products for the samples submitted to the treatment, suggesting that the it was effective for cellulose. The results show that the TEMPO method increased crystallinity and decreased the degree of polymerization. As for thermal stability, the nanowhiskers were more thermally stable than the other samples. Based on our findings, the use of nanowhiskers may be suitable for a variety of applications, such as the production of nanocomposites. |
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| Keywords: | Curaua fibers nanocellulose pretreatment bleaching TEMPO process |
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![ORCID Icon]({"type":"image","src":"/templates/jsp/images/orcid.png"} "ORCID Icon")
https://orcid.org/0000-0002-7017-0852;3. Department of Chemical Engineering - CCET, University of Caxias do Sul (UCS) , Caxias do Sul, Brazil;4. Post-graduate Program in Mining, Metallurgical and Materials Engineering (PPGEM), Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre, Brazil;5. Department of Chemical Engineering - CCET, University of Caxias do Sul (UCS) , Caxias do Sul, Brazil