Journal ArticleDOI
Cellulose nanofibers prepared by TEMPO-mediated oxidation of native cellulose
TLDR
Never-Dried and once-dried hardwood celluloses were oxidized by a 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated system, and highly crystalline and individualized cellulose nanofibers, dispersed in water, were prepared by mechanical treatment of the oxidized celluloses/water slurries.About:
This article is published in Biomacromolecules.The article was published on 2007-07-13. It has received 2017 citations till now. The article focuses on the topics: Oxidized cellulose & Cellulose.read more
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Lignocellulosic nanostructures as reinforcement in extruded and solvent casted polymeric nanocomposites: an overview
TL;DR: In this paper, the effect of cellulose and lignin-based reinforcement phases on structural and functional properties of several thermoplastic polymer matrices was investigated at the nanoscale level.
Journal ArticleDOI
Nanofibrillated bacterial cellulose and pectin edible films added with fruit purees.
Rayra Melo Viana,Nádia M.S.M. Sá,Matheus O. Barros,Maria de Fátima Borges,Henriette M.C. Azeredo +4 more
TL;DR: Fruit containing films based on pectin are suggested for sachets, whereas applications for food wrapping or coating may benefit from the use of NFBC.
Journal ArticleDOI
Nanofibrillated cellulose (CNF) from eucalyptus sawdust as a dry strength agent of unrefined eucalyptus handsheets.
María Evangelina Vallejos,Fernando Esteban Felissia,Maria Cristina Area,Nanci Vanesa Ehman,Quim Tarrés,Pere Mutjé +5 more
TL;DR: Nanofibrillated cellulose has been obtained from the cellulosic fraction of eucalyptus sawdust using TEMPO oxidation with NaOCl in basic medium followed by mechanical homogenization, and produced an increase in mechanical strength equivalent to that produced by PFI refining at 1600 revolutions.
Journal ArticleDOI
Natural Cellulose Nanofibers As Sustainable Enhancers in Construction Cement.
TL;DR: The use of naturally-derived renewable cellulose nanofibers (CNFs) to reinforce cement is described, finding that an addition of 0.15% by weight of CNFs leads to a 15% and 20% increase in the flexural and compressive strengths of cement paste.
Journal ArticleDOI
Oxidation of bleached wood pulp by TEMPO/NaClO/NaClO2 system: effect of the oxidation conditions on carboxylate content and degree of polymerization
TL;DR: In this paper, the authors investigated the effect of reaction conditions on carboxylate content and degree of polymerization (DP) of bleached wood pulp by the TEMPO/NaClO/ NaClO2 system at pH 3.5-6.8 and 25°-60°C.
References
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Journal ArticleDOI
Self-assembly at all scales.
TL;DR: Self-assembling processes are common throughout nature and technology and involve components from the molecular to the planetary scale and many different kinds of interactions.
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Nanometre diameter fibres of polymer, produced by electrospinning
Darrell H. Reneker,Iksoo Chun +1 more
TL;DR: More than 20 polymers, including polyethylene oxide, nylon, polyimide, DNA, polyaramid, and polyaniline, have been electrospun in this paper.
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Homogeneous suspensions of individualized microfibrils from TEMPO-catalyzed oxidation of native cellulose.
TL;DR: Never-dried native celluloses (bleached sulfite wood pulp, cotton, tunicin, and bacterial cellulose) were disintegrated into individual microfibrils after oxidation mediated by the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical followed by a homogenizing mechanical treatment.
Journal ArticleDOI
Effect of reaction conditions on the properties and behavior of wood cellulose nanocrystal suspensions.
TL;DR: Increased acid-to-pulp ratio reduced the dimensions of the nanocrystals thus produced and the critical concentration was increased and the biphasic range became narrower; a suspension made from a bleached kraft eucalyptus pulp gave very similar properties to the softwood nanocrystal suspension when prepared under similar hydrolysis conditions.
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Polymer nanofibers assembled by electrospinning
TL;DR: Electrospinning is a process by which polymer nanofibers (with diameter lower than 100 nm and lengths up to kilometres) can be produced using an electrostatically driven jet of polymer solution (or polymer melt) as mentioned in this paper.