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)…
Keywords: Polyamide-6, nanocomposites, injection molding, microcellular injection molding
Source: Polymer engineering and science. Vol. 44, no. 4 (Apr. 2004): Pages 673-686
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…
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.
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 (…
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.
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 (…
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.
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…
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.
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…
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.
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…
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):  p.
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…
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.
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…
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
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…
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.