Cellulose Nanocrystals from Forest Residues as Reinforcing Agents for Composites: A Study from Macro- to Nano-Dimensions

Carbohydrate Polymers
Rosana MorianaMonica Ek

Abstract

This study investigates for the first time the feasibility of extracting cellulose nanocrystals (CNCs) from softwood forestry logging residues (woody chips, branches and pine needles), with an obtained gravimetric yield of over 13%. Compared with the other residues, woody chips rendered a higher yield of bleached cellulosic fibers with higher hemicellulose, pectin and lignin content, longer diameter, and lower crystallinity and thermal stability. The isolation of CNCs from these bleached cellulosic fibers was verified by the removal of most of their amorphous components, the increase in the crystallinity index, and the nano-dimensions of the individual crystals. The differences in the physico-chemical properties of the fibers extracted from the three logging residues resulted in CNCs with specific physico-chemical properties. The potential of using the resulting CNCs as reinforcements in nanocomposites was discussed in terms of aspect ratio, crystallinity and thermal stability.

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Citations

Jul 31, 2016·Carbohydrate Polymers·You Wei ChenSiew-Moi Phang
Oct 6, 2016·Carbohydrate Polymers·Niédja Fittipaldi VasconcelosMorsyleide de Freitas Rosa
Feb 7, 2017·International Journal of Molecular Sciences·Juan Domínguez-RoblesAlejandro Rodríguez
Jan 25, 2017·Nanoscale·Djalal TracheVijay Kumar Thakur
May 28, 2019·Critical Reviews in Food Science and Nutrition·Ahmed A OunJong-Whan Rhim
Feb 29, 2020·Nanomaterials·Soon Mo Choi, Eun Joo Shin
Dec 2, 2020·Polymers·Tatiana BudtovaSytze J Buwalda
Jan 27, 2020·International Journal of Biological Macromolecules·Xichuan ZhaiXingbin Yang
Nov 11, 2019·Waste Management·Varun KumarNishi Kant Bhardwaj
Dec 28, 2019·International Journal of Biological Macromolecules·Elahe KamelniaKayvan Sadri
Jun 15, 2019·Carbohydrate Polymers·Sagnite Ventura-Cruz, Alberto Tecante
May 15, 2020·International Journal of Biological Macromolecules·Caroline Corrêa de Souza CoelhoLourdes Maria Correa Cabral
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zhengyue LiQiang Lin

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