journal article·2019-04-26Open access

CELLULOSE SHEETS MADE FROM MICRO/NANOFIBRILLATED FIBERS OF BAMBOO, JUTE AND EUCALYPTUS CELLULOSE PULPS

Department of Forest Science, Federal University of Lavras, C.P. 3037, 37200-000 Lavras, MG, Brazil, GUSTAVO HENRIQUE DENZIN TONOLI, VANIA APARECIDA DE SA, Department of Forest Science, Federal University of Lavras, C.P. 3037, 37200-000 Lavras, MG, Brazil, MARIO GUIMARÃES JR., Department of Electromechanics, Federal Center for Technological Education of Minas Gerais, Araxá, MG, Brazil, ALESSANDRA DE SOUZA FONSECA, Department of Forest Science, Federal University of Lavras, C.P. 3037, 37200-000 Lavras, MG, Brazil, GREGORY MELVIN GLENN, Bioproducts Research Unit, WRRC, ARS-USDA, Albany, CA 94710, USA, JORDÃO CABRAL MOULIN, Department of Forest Science, Federal University of Lavras, C.P. 3037, 37200-000 Lavras, MG, Brazil, SUHARA PANTHAPULAKKAL, Center for Biocomposites and Biomaterials Processing, Faculty of Forestry, University of Toronto, Toronto, Ontario M5S 3B3, Canada, MOHINI SAIN, Center for Biocomposites and Biomaterials Processing, Faculty of Forestry, University of Toronto, Toronto, Ontario M5S 3B3, Canada, DELILAH WOOD, Bioproducts Research Unit, WRRC, ARS-USDA, Albany, CA 94710, USA, TINA WILLIAMS, Bioproducts Research Unit, WRRC, ARS-USDA, Albany, CA 94710, USA, LENNARD TORRES, Bioproducts Research Unit, WRRC, ARS-USDA, Albany, CA 94710, USA, WILLIAM J. ORTS, Bioproducts Research Unit, WRRC, ARS-USDA, Albany, CA 94710, USA

Cellulose Chemistry and Technology· Volume 53· Issue 3-4

Abstract

The aim of this study was to investigate the properties of cellulose sheets made from fibrillated micro/nanofibrils of bamboo, jute and eucalyptus. Micro/nanofibrils obtained from alkaline-treated jute had higher crystalline fraction (CF) and crystallinity index (CI). The onset degradation temperature (T onset ) was very similar for all the micro/nanofibrils (from 316 o C to 323 o C). Defibrillated cellulose nanofibrils had an average diameter in the range of 30-50 nm. Cellulose sheets made of bamboo and jute micro/nanofibrils had higher bending strength, elastic modulus and energy to break than the sheets made of eucalyptus micro/nanofibrils. Compared to the bamboo and jute samples, the eucalyptus micro/nanofibril suspension had a greater amount of fiber debris, which may have contributed to higher apparent porosity, water adsorption and water solubility of the cellulose sheets. Further development of the mechanical defibrillation process could lower the production costs of micro/nanofibrils and improve the performance of engineered cellulose-based materials.
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Research context

OpenAlex topics: Advanced Cellulose Research Studies · Nanocomposite Films for Food Packaging · Electrospun Nanofibers in Biomedical Applications

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