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23 results found
Homogeneous and transparent CNF films, fabricated from the (2,2,6,6- tetramethylpiperidin-1-yl) oxyl (TEMPO)-modified CNF suspension, were laminated onto wood flakes (WF) based on phenol-formaldehyde (PF) resin and the reinforcement potential of the material has been investigated. The focus was on…
Author(s): Jen-Chieh Liu, Robert J. Moon, Alan Rudie, Jeffrey P. Youngblood
Keywords: cellulose nanofibrils, laminate, phenol-formaldehyde resin, relative humidity, wood flake
Source: Holzforschung 2014; Volume 68, Number 3, 2014; pp. 283–290.
Year: 2014
The elevated levels of tree mortality attributed to mountain pine beetle (MPB) (Dendroctonus ponderosae Hopkins) in western North American forests create forest management challenges. This investigation introduces the production of submicron or nanometer lignocellulose fibrils for value-added…
Author(s): Ingrid Hoeger, Rolland Gleisner, Jose Negron, Orlando J. Rojas, J. Y. Zhu
Keywords: cell wall deconstruction, cellulose nanofibrils, lignocellulose fibrils, mechanical fibrillation, mountain pine bark beetle
Source: Forest Science. 60(3): 502-511.
Year: 2014
Poly(ethylene oxide) (PEO) nanofiber mats were produced by electrospinning. Biobased cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) as reinforcement nanofillers were also added to the polymer to produce composite nanofiber mats. The effects of the two cellulose nanofillers on the…
Author(s): Xuezhu Xu, Haoran Wang, Long Jiang, Xinnan Wang, Scott A. Payne, J.Y. Zhu, Ruipeng Li
Keywords: Cellulose naocrystals, cellulose nanofibrils, Composite, eletrospin, Shish-Kebab
Source: Macromolecules Volume 47, 2014; pp. 3409-3416
Year: 2014
Polyvinyl alcohol (PVA)–cellulose nanofibril (CNF)–multiwalled carbon nanotube (MWCNT) hybrid organic aerogels were prepared using an environmentally friendly freeze-drying process with renewable materials. The material properties of these “green” hybrid aerogels were characterized extensively…
Author(s): Qifeng Zheng, Alireza Javadi, Ronald Sabo, Zhiyong Cai, Shaoqin Gong
Keywords: nanocellulose, cellulose nanofibrils, thermosets, mechanical properties, thermal properties, viscoelastic properties, applications
Source: RSC Adv., 2013, Volume 3, 2013; pp. 20816–20823.
Year: 2013
The reinforcement potential of novel nanocellulose-based scaffolding reinforcements composed of microfibrils 5 to 50 nm in diameter and several microns in length was investigated. The cellulose nanofibril reinforcement was used to produce a three-dimensional scaffolding. A hybrid two-step approach…
Author(s): Issam I. Qamhia, Ronald C. Sabo, Rani F. Elhajjar
Keywords: nanocellulose, cellulose nanofibrils, thermosets, mechanical properties, thermal properties, viscoelastic properties, applications
Source: BioResources Volume 9, Number 1, 2014; pp. 381-392.
Year: 2014
Fiber-reinforced polymer composites have gained popularity through their advantages over conventional metallic materials. Most polymer composites are traditionally made with reinforcing fibers such as carbon or glass. However, there has been recent interest in sourcing these reinforcing fibers from…
Author(s): Ronald C. Sabo, Rani F. Elhajjar, Craig M. Clemons, Krishna M. Pillai
Keywords: cellulose nanomaterials, cellulose nanofibrils, cellulose nanocrystals, thermoset resin, composite, reinforcement
Source: J.K. Pandey et al. (eds.), Handbook of Polymer Nanocomposites. Processing, Performance and Application – Volume C: Polymer Nanocomposites of Cellulose Nanoparticles, Springer-Verlag Berlin Heidelberg 2015; pp. 265-295.
Year: 2015
Both cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) are nanoscale cellulose fibers that have shown reinforcing effects in polymer nanocomposites. CNCs and CNFs are different in shape, size and composition. This study systematically compared their morphologies, crystalline structure…
Author(s): Xuezhu Xu, Fei Liu, Long Jiang, J.Y. Zhu, Darrin Haagenson, Dennis P. Wiesenborn
Keywords: cellulose nanocrystals, cellulose nanofibrils, polymer nanocomposites, reinforcing mechanism, Kapin&#8722, Kardos model, percolation theory
Source: ACS Appl. Mater. Interfaces, Volume 5, 2013; pp. 2999-3009.
Year: 2013
Cellulose nanofibrils (CNFs), which are generated from abundant, environmentally friendly natural plant resources, display numerous interesting properties such as outstanding mechanical strength, negligible light scattering, and low thermal expansion (Zimmermann et al., 2010). These nanofibers are…
Author(s): Yan Qing, Ronald Sabo, Zhiyong Cai, Yiqiang Wu
Keywords: cellulose nanofibrils, enzymatic hydrolysis, mechanical properties, cellulose nanocrystals
Source: In Proceedings of Advancements in Fiber-Polymer Composites: Wood Fiber, Natural Fibers, and Nanocellulose, May 6-7, 2013, Milwaukee, WI; 2013; 3 p.
Year: 2013
One key barrier to converting woody biomass to biofuel through the sugar platform is the low efficiency of enzymatic cellulose saccharification due to the strong recalcitrance of the crystalline cellulose. Significant past research efforts in cellulosic biofuels have focused on overcoming the…
Author(s): Ronald Sabo, J.Y. Zhu
Keywords: cellulose nanofibrils, cellulosic biofuel, enzymatic hydrolysis
Source: In: Production and applications of Cellulose Nanomaterials, Chapter 2.1, TAPPI Press 2013; pp. 191-193.
Year: 2013
A novel type of highly flexible and all-solid-state supercapacitor that uses cellulose nanofibril (CNF)/reduced graphene oxide (RGO)/carbon nanotube (CNT) hybrid aerogels as electrodes and H2SO4 poly (vinyl alcohol) PVA gel as the electrolyte was developed and is reported here. These flexible solid…
Author(s): Qifeng Zheng, Zhiyong Cai, Zhenqiang Ma, Shaoqin Gong
Keywords: aerogels, cellulose nanofibrils, graphene, carbon nanotube, all-solid-state supercapacitors
Source: ACS Applied Materials & Interfaces 2015, 7
Year: 2015