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21 results found
This study aims to explore the processing benefits and property improvements of combining nanocomposites with microcellular injection molding. The microcellular nanocomposite processing was performed on an injection-molding machine equipped with a commercially available supercritical fluid (SCF)…
Author(s): Mingjun Yuan, Lih-Sheng Turng, Shaoqin Gong, Daniel Caulfield, Chris Hunt, Rick Spindler
Keywords: Polyamide-6, nanocomposites, injection molding, microcellular injection molding
Source: Polymer engineering and science. Vol. 44, no. 4 (Apr. 2004): Pages 673-686
Year: 2004
A composite can be defined as two or more elements held together by a matrix. By this definition, what we call “solid wood” is a composite. Solid wood is a three-dimensional composite composed of cellulose, hemicelluloses and lignin (with smaller amounts of inorganics and extractives), held…
Author(s): Lars Berglund, Roger M. Rowell
Keywords: Composite materials, engineered wood, waferboard, hardboard, fiberboard, adhesives, particle board, plywood, laminated wood, nanocomposites, glulam timbers, strandboard, composite wood
Source: Handbook of wood chemistry and wood composites. Boca Raton, Fla. : CRC Press, 2005: pages 279-301.
Year: 2005
The effects of addition of hyperbranched polyesters (HBPs) and nanoclay on the material properties of both solid and microcellular polylactide (PLA) produced via a conventional and microcellular injection-molding process, respectively, were investigated. The effects of two different types of HBPs (…
Author(s): Srikanth Pilla, Adam Kramschuster, Jungjoo Lee, Craig Clemons, Shaoqin Gong, Lih-Sheng Turng
Keywords: Clay, injection molding of plastics, crosslinking, plastics, extrusion, wood-plastic composites, composite materials, mechanical properties, thermoplastic composites, recycled products, recycling, polyesters, fracture mechanics, strains, stresses, maleic anhydride, nanocomposites, nanoclay, wood-plastic materials, thermal degradation, biocomposites, microcellular injection molding, strength
Source: Journal of materials science. Vol. 45, no. 10 (May 2010): p. 2732–2746.
Year: 2010
Outdoor weathering of wood specimens treated with sol-gel formulations based on methyltrimethoxysilane (MTMOS), hexadecyltrimethoxysilane (HDTMOS), and ferric-zirconia-titania (Fe-Zr-Ti) sol was evaluated. The sol-gel process allowed deposition of a thin film of hybrid inorganic-organic networks (…
Author(s): Mandla A Tshabalala, Ryan Libert, Nancy Ross Sutherland
Keywords: Wood surfaces, wood deterioration, coatings, deterioration, thin films, moisture, water repellents, wood moisture, surface chemistry, weathering, titanium, color fading, ultraviolet radiation, zirconium, stabilizing agents, plant cell walls, nanocomposites, nanostructured materials, sol-gel deposition, moisture content, methyltrimethoxysilane, MTMOS, durability, exposure tests, discoloration, titanium, titanium compounds, ferric-zirconia-titania, Fe-Zr-Ti, hexadecyltrimethoxysilane, HDTMOS, photodegradation, photostabilization, surface properties, sol-gel treated wood, color stability
Source: Third International Coating Wood and Wood Composites Conference : durable and sustainable--today and beyond: proceedings, September 22-23, 2009 ... Charlotte, NC. [Plymouth Meeting, PA] : NPCA/FSCT, 2009: 12 p.
Year: 2009
Nanoreinforced hydrogels with a unique network structure were prepared from wood cellulose whiskers coated with chemically modified wood hemicelluloses. The hemicelluloses were modified with 2-hydroxyethylmethacrylate prior to adsorption onto the cellulose whiskers in aqueous medium. Synthesis of…
Author(s): Muzaffer Ahmet Karaaslan, Mandla A. Tshabalala, Daniel J. Yelle, Gisela Buschle-Diller
Keywords: Hemicellulose, cellulose whiskers, PHEMA, hydrogels, articular cartilage, cellulose, nanotechnology, adsorption, mechanical properties, viscoelasticity, crosslinking, biotechnology, biomedical materials, aspen, Populus, nanostructured materials, nanocomposites, monomers, nanocrystals, colloids, biorefining, chemical modification of wood, poly(2-hydroxyethylmethacrylate), polymers, polymerization, swelling, hydroxyethylmethacrylate, HEMA
Source: Carbohydrate polymers. Vol. 86, no. 1 (Aug. 1, 2011): p. 192-201.
Year: 2011
This critical review provides a processing-structure-property perspective on recent advances in cellulose nanoparticles and composites produced from them. It summarizes cellulose nanoparticles in terms of particle morphology, crystal structure, and properties. Also described are the self-assembly…
Author(s): Robert J. Moon, Ashlie Martini, John Nairn, John Simonsen, Jeff Youngblood
Keywords: Nanostructured materials, nanotechnology, technological innovations, microstructure, cellulose, chemistry, composite materials, nanocomposites, nanocrystals, crystallization, chemical composition, biocomposites, nanoparticles, mechanical properties, suspensions, elasticity, surface chemistry, nanocellulose, crystalline cellulose, nanocomposites, crystallinity, review article, bacterial cellulose, synthesis paper
Source: Chemical Society reviews. Vol. 40, no. 7 (2011): p. 3941-3994.
Year: 2011
The development of metrology for nanoparticles is a significant challenge. Cellulose nanocrystals (CNCs) are one group of nanoparticles that have high potential economic value but present substantial challenges to the development of the measurement science. Even the largest trees owe their strength…
Author(s): Michael T. Postek, Andras Vladar, John Dagata, Natalia Farkas, Bin Ming, Ryan Wagner, Arvind Raman, Robert J. Moon, Ronald Sabo, Theodore H. Wegner, James Beecher
Keywords: Cellulose, nanocrystals, measurement, crystallization, nanotechnology, nanostructured materials, biopolymers, biosynthesis, cellulose, chemistry, nanoparticles, cellulose fibers, nanofibers, elasticity, scanning probe microscopy, scanning electron microscopy, measuring instruments, metrology, crystalline cellulose, nanocomposites, crystallinity, helium ion microscopy, cellulose fibers properties, nanometrology, cellulose nanocrystals, CNC, metrology, standards
Source: Measurement science and technology. Vol. 22, no. 2 (Feb. 2011): [10] p.
Year: 2011
Interest in the use of nanoparticles of iron, titanium, aluminum, and zinc oxides in transparent coatings for wood is increasing. Such nano-composite coatings have the potential of not only preserving the natural color of the wood but also stabilizing the wood surface against the combined…
Author(s): Mandla A. Tshabalala
Keywords: Wood surfaces, aluminum oxide, aluminum coatings, accelerated life testing, water repellents, aluminum, weathering, coatings, deterioration, wood moisture, deterioration, nanoparticles, nanotechnology, nanocomposites, thin films, accelerated testing, loblolly pine, sol-gel deposition
Source: Proceedings of the Fifth International Woodcoatings Congress : Enhancing Service Life, 2006 October 17-18, Prague, Czech Republic. Hampton, UK : PRA Coatings Technology Centre, 2006: 6 pages.
Year: 2006
In this study, Raman spectroscopy was used to investigate the spatial distribution of cellulose nanocrystals (CNCs) in extruded polypropylene (PP) filaments. Raman maps, based on cellulose and PP bands, obtained at 1 micron spatial resolution showed that the CNCs were aggregated to various degrees…
Author(s): Umesh P. Agarwal, R. Sabo, Richard S. Reiner, Craig Merrill Clemons, Alan W. Rudie
Keywords: Nanotechnology, cellulose fibers, cellulose, chemical composition, composite materials, mechanical properties, fiber-reinforced plastics, fibrous composites, thermoplastic composites, elasticity, modulus of elasticity, nanostructured materials, crystallization, Raman spectroscopy, wood-plastic composites, polypropylene, extrusion process, tensile strength, nanocomposites, nanocrystals, wood-plastic materials
Source: Proceedings of the 15th International Symposium on Wood, Fiber and Pulping Chemistry, Oslo, Norway, (July 15-18, 2009). Oslo, Norway : Congress-Conference AS, 2009: Paper no. P-131_ISWFPC_Nano_composite_mapping
Year: 2009
Using natural cellulosic fibers as fillers for biodegradable polymers can result in fully biodegradable composites. Biodegradable composites were prepared using nanofibrillated cellulose (NFC) as the reinforcement and poly (3-hydroxybutyrate-co-3-hydroxyvalerate, PHBV) as the polymer matrix. The…
Author(s): Yottha Srithep, Ronald Sabo, Craig Clemons, Lih-Sheng Turng, Srikanth Pilla, Jun Peng
Keywords: Nanofribrillated cellulose (NFC), Biobased and biodegradable polymers, nanocomposites, poly (3-hydroxybutyrate-co-3-hydroxyvalerate), PHBV
Source: In: Proceedings of the Polymer Processing Society 28th Annual Meeting ~ PPS-28 ~ December 11-15, 2012, Pattaya (Thailand). 5 p.
Year: 2012