601
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Paquin M, Loranger É, Hannaux V, Chabot B, Daneault C. The use of Weissler method for scale-up a Kraft pulp oxidation by TEMPO-mediated system from a batch mode to a continuous flow-through sonoreactor. ULTRASONICS SONOCHEMISTRY 2013; 20:103-108. [PMID: 22939000 DOI: 10.1016/j.ultsonch.2012.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 04/06/2012] [Accepted: 08/01/2012] [Indexed: 06/01/2023]
Abstract
The efficiency of cellulose oxidation mediated by the 4-acetamido-TEMPO radical under ultrasonic cavitation was investigated using two ultrasonic systems: a batch lab scale ultrasonic bath with a glass reactor and a semi-continuous flow-through sonoreactor. The main objective was to explore the possibility of scaling up the production of oxidized cellulose under ultrasound, from a lab scale process to a pilot plant process, which served as a precursor for producing nanofibrils cellulose. It was found that under acoustic cavitation, the efficiency of TEMPO-mediation oxidation of native cellulose was significantly improved, particularly in the flow-through sonoreactor. In comparison with the glass reactor, the flow-through sonoreactor reduce the applied energy by 88% while increasing 7.8 times the production rate of radicals. These results enable a possibility of producing oxidized fibers for industrial applications.
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Affiliation(s)
- Michel Paquin
- Lignocellulosic Materials Research Centre, Université du Québec à Trois-Rivières, 3351 boulevard des Forges, Trois-Rivières, Qc, Canada.
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602
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Gao K, Shao Z, Wang X, Zhang Y, Wang W, Wang F. Cellulose nanofibers/multi-walled carbon nanotube nanohybrid aerogel for all-solid-state flexible supercapacitors. RSC Adv 2013. [DOI: 10.1039/c3ra42050g] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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603
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Zuber M, Zia KM, Barikani M. Chitin and Chitosan Based Blends, Composites and Nanocomposites. ADVANCES IN NATURAL POLYMERS 2013. [DOI: 10.1007/978-3-642-20940-6_3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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604
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Rebouillat S, Pla F. State of the Art Manufacturing and Engineering of Nanocellulose: A Review of Available Data and Industrial Applications. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jbnb.2013.42022] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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605
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Bendi R, Imae T. Renewable catalyst with Cu nanoparticles embedded into cellulose nano-fiber film. RSC Adv 2013. [DOI: 10.1039/c3ra42689k] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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606
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Abstract
The water-dispersed conductive polypyrrole (PPy) was prepared via thein situoxidative chemical polymerization by using ammonium persulfate (APS) as oxidant and tunicate cellulose nanocrystals (T-CNs) as a dopant and template for tuning the morphologies of PPy nanoparticles. Highly flexible paper-like materials of PPy/T-CNs nanocomposites with high electrical conductivity values and good mechanical properties were prepared. The structure of nanocomposites of PPy/T-CNs was investigated by using Fourier transform infrared spectroscopy. Scanning electron microscopy and transmission electron microscopy analyses of the composites revealed that PPy consisted of nanoparticles about 2.5 nm in mean size to form a continuous coating covered on the T-CNs. The diameters of the PPy nanoparticles increased from 10 to 100 nm with the increasing pyrrole amount. Moreover, electrical properties of the obtained PPy/T-CNs films were studied using standard four-probe technique and the electrical conductivity could be as high as 10−3 S/cm.
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607
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Saito T, Kuramae R, Wohlert J, Berglund LA, Isogai A. An Ultrastrong Nanofibrillar Biomaterial: The Strength of Single Cellulose Nanofibrils Revealed via Sonication-Induced Fragmentation. Biomacromolecules 2012; 14:248-53. [DOI: 10.1021/bm301674e] [Citation(s) in RCA: 434] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tsuguyuki Saito
- Department of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Ryota Kuramae
- Department of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | | | | | - Akira Isogai
- Department of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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608
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Surface Functionalized Nanofibrillar Cellulose (NFC) Film as a Platform for Immunoassays and Diagnostics. Biointerphases 2012; 7:61. [DOI: 10.1007/s13758-012-0061-7] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 09/20/2012] [Indexed: 10/27/2022] Open
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609
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Lavoine N, Desloges I, Dufresne A, Bras J. Microfibrillated cellulose – Its barrier properties and applications in cellulosic materials: A review. Carbohydr Polym 2012; 90:735-64. [DOI: 10.1016/j.carbpol.2012.05.026] [Citation(s) in RCA: 875] [Impact Index Per Article: 72.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 04/27/2012] [Accepted: 05/05/2012] [Indexed: 12/26/2022]
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610
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Hard and transparent films formed by nanocellulose-TiO2 nanoparticle hybrids. PLoS One 2012; 7:e45828. [PMID: 23049689 PMCID: PMC3462202 DOI: 10.1371/journal.pone.0045828] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 08/23/2012] [Indexed: 12/05/2022] Open
Abstract
The formation of hybrids of nanofibrillated cellulose and titania nanoparticles in aqueous media has been studied. Their transparency and mechanical behavior have been assessed by spectrophotometry and nanoindentation. The results show that limiting the titania nanoparticle concentration below 16 vol% yields homogeneous hybrids with a very high Young’s modulus and hardness, of up to 44 GPa and 3.4 GPa, respectively, and an optical transmittance above 80%. Electron microscopy shows that higher nanoparticle contents result in agglomeration and an inhomogeneous hybrid nanostructure with a concomitant reduction of hardness and optical transmittance. Infrared spectroscopy suggests that the nanostructure of the hybrids is controlled by electrostatic adsorption of the titania nanoparticles on the negatively charged nanocellulose surfaces.
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611
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Self-assembly of amylose-grafted carboxymethyl cellulose. Carbohydr Polym 2012; 90:1371-7. [DOI: 10.1016/j.carbpol.2012.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 06/23/2012] [Accepted: 07/02/2012] [Indexed: 11/22/2022]
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612
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Cellulose nanowhiskers extracted from TEMPO-oxidized jute fibers. Carbohydr Polym 2012; 90:1075-80. [DOI: 10.1016/j.carbpol.2012.06.046] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 05/31/2012] [Accepted: 06/15/2012] [Indexed: 11/18/2022]
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613
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Lin N, Bruzzese C, Dufresne A. TEMPO-oxidized nanocellulose participating as crosslinking aid for alginate-based sponges. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4948-59. [PMID: 22950801 DOI: 10.1021/am301325r] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Crosslinked polysaccharide sponges have been prepared by freeze-drying of amorphous alginate-oxidized nanocellulose in the presence of a Ca(2+) ionic crosslinking agent. The new carboxyl groups on the surface of nanocellulose induced by the chemical oxidization provided the possibility of participating in the construction of an alginate-based sponge's structure and played a fundamental role in the structural and mechanical stability of ensuing sponges. Furthermore, enhanced mechanical strength induced by oxidized cellulose nanocrystals and the formation of a semi-interpenetrating polymer network from oxidized microfibrillated cellulose were reported. Together with the facile and ionic crosslinking process, the ultrahigh porosity, promising water absorption and retention, as well as the improved compression strength of the crosslinked sponges should significantly extend the use of this soft material in diverse practical applications.
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Affiliation(s)
- Ning Lin
- Grenoble Institute of Technology (Grenoble INP), The International School of Paper, Print Media, and Biomaterials (Pagora), BP65, 38402 Saint Martin d'Hères Cedex, France
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614
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Loranger E, Piché AO, Daneault C. Influence of High Shear Dispersion on the Production of Cellulose Nanofibers by Ultrasound-Assisted TEMPO-Oxidation of Kraft Pulp. NANOMATERIALS 2012; 2:286-297. [PMID: 28348309 PMCID: PMC5304585 DOI: 10.3390/nano2030286] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 08/23/2012] [Accepted: 08/27/2012] [Indexed: 12/02/2022]
Abstract
Cellulose nanofibers can be produced using a combination of TEMPO, sodium bromide (NaBr) and sodium hypochlorite, and mechanical dispersion. Recently, this process has been the subject of intensive investigation. However, studies on the aspects of mechanical treatment of this process remain marginal. The main objective of this study is to evaluate the high shear dispersion parameters (e.g., consistency, stator-rotor gap, recirculation rate and pH) and determine their influences on nanocellulose production using ultrasound-assisted TEMPO-oxidation of Kraft pulp. All nanofiber gels produced in this study exhibited rheological behaviors known as shear thinning. From all the dispersion parameters, the following conditions were identified as optimal: 0.042 mm stator-rotor gap, 200 mL/min recycle rate, dispersion pH of 7 and a feed consistency of 2%. High quality cellulose gel could be produced under these conditions. This finding is surely of great interest for the pulp and paper industry.
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Affiliation(s)
- Eric Loranger
- Lignocellulosic Material Research Centre, Université du Québec à Trois-Rivières, 3351 Des Forges, Trois-Rivières, Québec G9A 5H7, Canada.
| | - André-Olivier Piché
- Lignocellulosic Material Research Centre, Université du Québec à Trois-Rivières, 3351 Des Forges, Trois-Rivières, Québec G9A 5H7, Canada.
| | - Claude Daneault
- Lignocellulosic Material Research Centre, Université du Québec à Trois-Rivières, 3351 Des Forges, Trois-Rivières, Québec G9A 5H7, Canada.
- Canada Research Chair in Value-added Paper, 3351 Des Forges, Trois-Rivières, Québec G9A 5H7, Canada.
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615
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Ma H, Burger C, Hsiao BS, Chu B. Highly Permeable Polymer Membranes Containing Directed Channels for Water Purification. ACS Macro Lett 2012; 1:723-726. [PMID: 35607080 DOI: 10.1021/mz300163h] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This viewpoint describes the concept of using nanocomposite barrier layers containing directed water channels to increase membrane permeability for water purification. In one practical approach, the channels, formed at the interface between the interconnected nanofibrous scaffold and the polymer matrix, were used to guide the transport of water molecules in a directed manner and to also exclude contaminant molecules. This concept was demonstrated by embedding overlapped oxidized multiwalled carbon nanotubes into the poly(vinyl alcohol) (PVA) barrier layer for ultrafiltration (UF). We anticipate that the same approach can be extended by substituting oxidized carbon nanotubes with ultrafine cellulose nanofibers (diameter about 5 nm), which are derived from wood pulp and are environmentally friendly as well as more cost-effective, into highly cross-linked polymer barrier layers. The resulting thin-film nanofibrous composite (TFNC) membranes should exhibit a permeation flux significantly higher than those of conventional thin-film composite (TFC) membranes for nanofiltration while maintaining the same rejection capability.
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Affiliation(s)
- Hongyang Ma
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Christian Burger
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Benjamin S. Hsiao
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Benjamin Chu
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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616
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Barazzouk S, Daneault C. Amino Acid and Peptide Immobilization on Oxidized Nanocellulose: Spectroscopic Characterization. NANOMATERIALS 2012; 2:187-205. [PMID: 28348303 PMCID: PMC5327898 DOI: 10.3390/nano2020187] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 05/24/2012] [Accepted: 06/05/2012] [Indexed: 11/16/2022]
Abstract
In this work, oxidized nanocellulose (ONC) was synthesized and chemically coupled with amino acids and peptides using a two step coupling method at room temperature. First, ONC was activated by N-ethyl-N'-(3-dimethylaminopropyl) carbodiimide hydrochloride, forming a stable active ester in the presence of N-hydroxysuccinimide. Second, the active ester was reacted with the amino group of the amino acid or peptide, forming an amide bond between ONC and the grafted molecule. Using this method, the intermolecular interaction of amino acids and peptides was avoided and uniform coupling of these molecules on ONC was achieved. The coupling reaction was very fast in mild conditions and without alteration of the polysaccharide. The coupling products (ONC-amino acids and ONC-peptides) were characterized by transmission electron microscopy and by the absorption, emission, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) spectroscopic techniques.
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Affiliation(s)
- Saïd Barazzouk
- Centre de Recherche sur les Matériaux Lignocellulosiques, Université du Québec à Trois-Rivières, Trois-Rivières, QC, G9A 5H7, Canada.
| | - Claude Daneault
- Centre de Recherche sur les Matériaux Lignocellulosiques, Université du Québec à Trois-Rivières, Trois-Rivières, QC, G9A 5H7, Canada.
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617
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Ifuku S, Saimoto H. Chitin nanofibers: preparations, modifications, and applications. NANOSCALE 2012; 4:3308-3318. [PMID: 22539071 DOI: 10.1039/c2nr30383c] [Citation(s) in RCA: 237] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Chitin nanofibers are prepared from the exoskeletons of crabs and prawns by a simple mechanical treatment after the removal of proteins and minerals. The obtained nanofibers have fine nanofiber networks with a uniform width of approximately 10-20 nm and a high aspect ratio. The method used for chitin-nanofiber isolation is also successfully applied to the cell walls of mushrooms. They form a complex with glucans on the fiber surface. A grinder, a Star Burst atomization system, and a high speed blender are all used in the mechanical treatment to convert chitin to nanofibers. Mechanical treatment under acidic conditions is the key to facilitate fibrillation. At pH 3-4, the cationization of amino groups on the fiber surface assists nano-fibrillation by electrostatic repulsive force. By applying this finding, we also prepared chitin nanofibers from dry chitin powder. Chitin nanofibers are acetylated to modify their surfaces. The acetyl DS can be controlled from 1 to 3 by changing the reaction time. An acetyl group is introduced heterogeneously from the surface to the core. Nanofiber morphology is maintained even in the case of high acetyl DS. Optically transparent chitin nanofiber composites are prepared with 11 different types of acrylic resins. Due to the nano-sized structure, all of the composites are highly transparent. Chitin nanofibers significantly increase the Young's moduli and the tensile strengths and decrease the thermal expansion of all acrylic resins due to the reinforcement effect of chitin nanofibers. Chitin nanofibers show chiral separation ability. The chitin nanofiber membrane transports the d-isomer of glutamic acid, phenylalanine, and lysine from the corresponding racemic amino acid mixtures faster than the corresponding l-isomer. The chitin nanofibers improve clinical symptoms and suppress ulcerative colitis in a DSS-induced mouse model of acute ulcerative colitis. Moreover, chitin nanofibers suppress myeloperoxidase activation in the colon and decrease serum interleukin-6 concentrations.
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Affiliation(s)
- Shinsuke Ifuku
- Department of Chemistry and Biotechnology, Tottori University, Tottori 680-8552, Japan.
| | - Hiroyuki Saimoto
- Department of Chemistry and Biotechnology, Tottori University, Tottori 680-8552, Japan.
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618
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Fujisawa S, Ikeuchi T, Takeuchi M, Saito T, Isogai A. Superior Reinforcement Effect of TEMPO-Oxidized Cellulose Nanofibrils in Polystyrene Matrix: Optical, Thermal, and Mechanical Studies. Biomacromolecules 2012; 13:2188-94. [DOI: 10.1021/bm300609c] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shuji Fujisawa
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tomoyasu Ikeuchi
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Miyuki Takeuchi
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Akira Isogai
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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619
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Cellulose nanofibrils prepared from softwood cellulose by TEMPO/NaClO/NaClO₂ systems in water at pH 4.8 or 6.8. Int J Biol Macromol 2012; 51:228-34. [PMID: 22617623 DOI: 10.1016/j.ijbiomac.2012.05.016] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/08/2012] [Accepted: 05/14/2012] [Indexed: 11/23/2022]
Abstract
Catalytic oxidation of softwood cellulose using NaClO and either 2,2,6,6-tetramethylpiperidine-1-oxyl (4-H-TEMPO) or 4-acetamido-TEMPO (4-AcNH-TEMPO) was applied with NaClO(2) used as a primary oxidant in an aqueous buffer at pH 4.8 or 6.8. When the 4-AcNH-TEMPO-mediated oxidation was applied to softwood cellulose in water at pH 4.8 and 40 °C, the carboxylate content rose to ∼1.3 mmol/g after reaction for 48 h and the DP(v) value was more than 1100. This 4-AcNH-TEMPO-oxidized softwood cellulose was mostly converted to individual nanofibrils by mechanical disintegration in water, with uniform widths of 3-4 nm and lengths greater than 1 μm.
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620
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Wu CN, Saito T, Fujisawa S, Fukuzumi H, Isogai A. Ultrastrong and High Gas-Barrier Nanocellulose/Clay-Layered Composites. Biomacromolecules 2012; 13:1927-32. [DOI: 10.1021/bm300465d] [Citation(s) in RCA: 240] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Chun-Nan Wu
- Department of Biomaterials Sciences,
Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department of Biomaterials Sciences,
Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Shuji Fujisawa
- Department of Biomaterials Sciences,
Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Hayaka Fukuzumi
- Department of Biomaterials Sciences,
Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Akira Isogai
- Department of Biomaterials Sciences,
Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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621
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Abstract
The goal of this paper was to develop an optically transparent nanocomposite with high strength by reinforcing polyurethane (PU) with cellulose nanofibers (CNFs) extracted from newspapers. The FE-SEM images show that through chemical and mechanical treatments, newspaper CNFs with diameters ranged from 20 to 100 nm and an aspect ratio of over 1000 were successfully obtained as well as wood powder. They were cross-linked together and formed a special three-dimensional network structure. The nanocomposite was fabricated by impregnating the CNF sheet into transparent PU resin and cured under ultraviolet. Results demonstrate that the transparency of newspaper CNF/PU nanocomposite was as high as wood CNF/PU nanocomposite. The elastic modulus and tensile strength of newspaper CNF/PU composite were increased roughly eighteen times and two times respectively while retaining the high transparency of PU, which was nearly the same with wood CNF/PU composite.
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622
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Liu H, Song J, Shang S, Song Z, Wang D. Cellulose nanocrystal/silver nanoparticle composites as bifunctional nanofillers within waterborne polyurethane. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2413-2419. [PMID: 22506693 DOI: 10.1021/am3000209] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Developing bionanocomposites from renewable biomass is a viable supplement for materials produced from mineral and fossil fuel resources. In this study, nanocomposites composed of carboxylated cellulose nanocrystals (CCNs) and silver nanoparticles (AgNPs) were prepared and used as bifunctional nanofillers to improve the mechanical and antimicrobial properties of waterborne polyurethane (WPU). Morphology, structure and performance of the CCNs/AgNPs nanocomposites and WPU-based films were investigated. WPU-based composite films were homogeneous and reinforced. The WPU/CCNs/AgNPs composite showed excellent antimicrobial properties in killing both Gram-negative E. coli and Gram-positive S. aureus. The CCNs/AgNPs nanocomposites could be applied as bifunctional nanofillers within WPU.
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Affiliation(s)
- He Liu
- Institute of Chemical Industry of Forestry Products, CAF, Key Laboratory of Biomass Energy and Material, Jiangsu Province, PR China
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623
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Liimatainen H, Visanko M, Sirviö JA, Hormi OEO, Niinimaki J. Enhancement of the Nanofibrillation of Wood Cellulose through Sequential Periodate–Chlorite Oxidation. Biomacromolecules 2012; 13:1592-7. [DOI: 10.1021/bm300319m] [Citation(s) in RCA: 229] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Henrikki Liimatainen
- Fiber
and Particle Engineering Laboratory and‡Department of Chemistry, University of Oulu, Oulu FI-90014, Finland
| | - Miikka Visanko
- Fiber
and Particle Engineering Laboratory and‡Department of Chemistry, University of Oulu, Oulu FI-90014, Finland
| | - Juho Antti Sirviö
- Fiber
and Particle Engineering Laboratory and‡Department of Chemistry, University of Oulu, Oulu FI-90014, Finland
| | - Osmo E. O. Hormi
- Fiber
and Particle Engineering Laboratory and‡Department of Chemistry, University of Oulu, Oulu FI-90014, Finland
| | - Jouko Niinimaki
- Fiber
and Particle Engineering Laboratory and‡Department of Chemistry, University of Oulu, Oulu FI-90014, Finland
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624
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Tanpichai S, Quero F, Nogi M, Yano H, Young RJ, Lindström T, Sampson WW, Eichhorn SJ. Effective Young’s Modulus of Bacterial and Microfibrillated Cellulose Fibrils in Fibrous Networks. Biomacromolecules 2012; 13:1340-9. [DOI: 10.1021/bm300042t] [Citation(s) in RCA: 166] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Supachok Tanpichai
- Materials Science Centre, School of Materials, University of Manchester, Grosvenor
Street, Manchester, M13 9PL, United Kingdom
- The Northwest Composite Centre, University of Manchester, Paper Science Building, Sackville
Street, Manchester, M13 9PL, United Kingdom
| | - Franck Quero
- Materials Science Centre, School of Materials, University of Manchester, Grosvenor
Street, Manchester, M13 9PL, United Kingdom
- The Northwest Composite Centre, University of Manchester, Paper Science Building, Sackville
Street, Manchester, M13 9PL, United Kingdom
| | - Masaya Nogi
- The Institute of Scientific
and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan
| | - Hiroyuki Yano
- Research Institute
for the Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-011, Japan
| | - Robert J. Young
- Materials Science Centre, School of Materials, University of Manchester, Grosvenor
Street, Manchester, M13 9PL, United Kingdom
- The Northwest Composite Centre, University of Manchester, Paper Science Building, Sackville
Street, Manchester, M13 9PL, United Kingdom
| | | | - William W. Sampson
- Materials Science Centre, School of Materials, University of Manchester, Grosvenor
Street, Manchester, M13 9PL, United Kingdom
- The Northwest Composite Centre, University of Manchester, Paper Science Building, Sackville
Street, Manchester, M13 9PL, United Kingdom
| | - Stephen J. Eichhorn
- Materials Science Centre, School of Materials, University of Manchester, Grosvenor
Street, Manchester, M13 9PL, United Kingdom
- The Northwest Composite Centre, University of Manchester, Paper Science Building, Sackville
Street, Manchester, M13 9PL, United Kingdom
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625
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Chinga-Carrasco G, Syverud K. On the structure and oxygen transmission rate of biodegradable cellulose nanobarriers. NANOSCALE RESEARCH LETTERS 2012; 7:192. [PMID: 22429336 PMCID: PMC3324384 DOI: 10.1186/1556-276x-7-192] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 03/19/2012] [Indexed: 05/23/2023]
Abstract
Cellulose nanofibrils have been proposed for novel barrier concepts, based on their capability to form smooth, strong and transparent films, with high oxygen barrier properties. A series of cellulose-based films were manufactured and tested with respect to their oxygen transmission rate (OTR) capabilities. The obtained OTR levels were considerably better than the levels recommended for packaging applications. Part of the nanofibrillated material applied in this study was produced with 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) mediated oxidation as pretreatment. Films made of TEMPO-pretreated samples yielded lower OTR values. The minimum obtained OTR value was 3.0 mL m-2 day-1 atm-1 with a corresponding oxygen permeability of 0.04 mL mm m-2 day-1 atm-1, tested at 50% relative humidity. The good barrier properties are due to the compact and dense structure of the films, as revealed by field-emission scanning electron microscopy. A relationship between OTR and the structure of the corresponding nanofibril-based films was confirmed.
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Affiliation(s)
- Gary Chinga-Carrasco
- Paper and Fibre Research Institute (PFI), Høgskoleringen 6b, Trondheim, 7491, Norway
| | - Kristin Syverud
- Paper and Fibre Research Institute (PFI), Høgskoleringen 6b, Trondheim, 7491, Norway
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626
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Nemoto J, Soyama T, Saito T, Isogai A. Nanoporous networks prepared by simple air drying of aqueous TEMPO-oxidized cellulose nanofibril dispersions. Biomacromolecules 2012; 13:943-6. [PMID: 22332709 DOI: 10.1021/bm300041k] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junji Nemoto
- Central Research Laboratory, Hokuetsu-Kishu Paper Co. Ltd., 3-5-1, Nishizao, Nagaoka, Niigata 940-0027, Japan
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627
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Lam E, Hrapovic S, Majid E, Chong JH, Luong JHT. Catalysis using gold nanoparticles decorated on nanocrystalline cellulose. NANOSCALE 2012; 4:997-1002. [PMID: 22218753 DOI: 10.1039/c2nr11558a] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel nanocomposite was prepared by deposition of carbonate-stabilized Au nanoparticles (AuNPs) onto the surface of poly(diallyldimethyl ammonium chloride) (PDDA)-coated carboxylated nanocrystalline cellulose (NCC). The hybrid material possessed AuNPs (1.45% by weight) with an average diameter of 2.95 ± 0.06 nm. The catalytic activity of AuNP/PDDA/NCC for reducing 4-nitrophenol to 4-aminophenol was compared to other Au-supported composites. An activation energy of 69.2 kJ mol(-1) was obtained for the reaction. Indeed, the reaction rate constant k of (5.1 ± 0.2) × 10(-3) s(-1) was comparable to the benchmark literature value obtained using AuNPs (<5 nm in diameter) decorated on a network of crystalline cellulose fibers. Our strategy promotes the use of natural resources to prepare reusable hybrid inorganic-organic materials for important reactions with facilitated product isolation/purification.
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Affiliation(s)
- Edmond Lam
- Biotechnology Research Institute, National Research Council Canada, 6100 Royalmount Avenue, Montreal, Quebec, H4P 2R2, Canada
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628
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Arola S, Tammelin T, Setälä H, Tullila A, Linder MB. Immobilization-stabilization of proteins on nanofibrillated cellulose derivatives and their bioactive film formation. Biomacromolecules 2012; 13:594-603. [PMID: 22248303 DOI: 10.1021/bm201676q] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In a number of different applications for enzymes and specific binding proteins a key technology is the immobilization of these proteins to different types of supports. In this work we describe a concept for protein immobilization that is based on nanofibrillated cellulose (NFC). NFC is a form of cellulose where fibers have been disintegrated into fibrils that are only a few nanometers in diameter and have a very large aspect ratio. Proteins were conjugated through three different strategies using amine, epoxy, and carboxylic acid functionalized NFC. The conjugation chemistries were chosen according to the reactive groups on the NFC derivatives; epoxy amination, heterobifunctional modification of amino groups, and EDC/s-NHS activation of carboxylic acid groups. The conjugation reactions were performed in solution and immobilization was performed by spin coating the protein-NCF conjugates. The structure of NFC was shown to be advantageous for both protein performance and stability. The use of NFC allows all covalent chemistry to be performed in solution, while the immobilization is achieved by a simple spin coating or spreading of the protein-NFC conjugates on a support. This allows more scalable methods and better control of conditions compared to the traditional methods that depend on surface reactions.
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Affiliation(s)
- Suvi Arola
- VTT , Technical Research Centre of Finland, Bio and Process Technology, Tietotie 2, P.O. Box 1000, FIN-02044 VTT, Finland.
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629
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Shinoda R, Saito T, Okita Y, Isogai A. Relationship between Length and Degree of Polymerization of TEMPO-Oxidized Cellulose Nanofibrils. Biomacromolecules 2012; 13:842-9. [DOI: 10.1021/bm2017542] [Citation(s) in RCA: 339] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ryuji Shinoda
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Yusuke Okita
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Akira Isogai
- Department of Biomaterials Sciences, Graduate School
of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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630
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Sehaqui H, Ezekiel Mushi N, Morimune S, Salajkova M, Nishino T, Berglund LA. Cellulose nanofiber orientation in nanopaper and nanocomposites by cold drawing. ACS APPLIED MATERIALS & INTERFACES 2012; 4:1043-1049. [PMID: 22257144 DOI: 10.1021/am2016766] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To exploit the mechanical potential of native cellulose fibrils, we report on the preparation of nanopaper with preferred orientation of nanofibrillated cellulose (TEMPO-NFC) by cold drawing. The preparation route is papermaking-like and includes vacuum filtering of a TEMPO-oxidated NFC water dispersion, drawing in wet state and drying. The orientation of the fibrils in the nanopaper was assessed by AFM and wide-angle X-ray diffraction analysis, and the effect on mechanical properties of the resulting nanopaper structure was investigated by tensile tests. At high draw ratio, the degree of orientation is as high as 82 and 89% in-the-plane and cross-sectional planes of the nanopaper, respectively, and the Young's modulus is 33 GPa. This is much higher than mechanical properties of isotropic nanopaper. The cold drawing method can be also applied to NFC nanocomposites as demonstrated by preparation of TEMPO-NFC/hydroxyethyl cellulose (HEC) nanocomposites. The introduction of the soft HEC matrix allows further tailoring of the mechanical properties.
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Affiliation(s)
- Houssine Sehaqui
- Department of Fibre and Polymer Technology and §Wallenberg Wood Science Center, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
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631
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Qi ZD, Saito T, Fan Y, Isogai A. Multifunctional Coating Films by Layer-by-Layer Deposition of Cellulose and Chitin Nanofibrils. Biomacromolecules 2012; 13:553-8. [DOI: 10.1021/bm201659b] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Zi-Dong Qi
- Graduate School of Agricultural and
Life Science, The University of Tokyo,
1-1-1 Yayoi, Bunkyo-ku, Tokyo
113-8657, Japan
| | - Tsuguyuki Saito
- Graduate School of Agricultural and
Life Science, The University of Tokyo,
1-1-1 Yayoi, Bunkyo-ku, Tokyo
113-8657, Japan
| | - Yimin Fan
- Graduate School of Agricultural and
Life Science, The University of Tokyo,
1-1-1 Yayoi, Bunkyo-ku, Tokyo
113-8657, Japan
| | - Akira Isogai
- Graduate School of Agricultural and
Life Science, The University of Tokyo,
1-1-1 Yayoi, Bunkyo-ku, Tokyo
113-8657, Japan
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632
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Ma H, Hsiao BS, Chu B. Ultrafine Cellulose Nanofibers as Efficient Adsorbents for Removal of UO 22+ in Water. ACS Macro Lett 2012; 1:213-216. [PMID: 35578482 DOI: 10.1021/mz200047q] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ultrafine cellulose nanofibers, 5-10 nm in diameter, were prepared from oxidation of wood pulp using the (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)/NaBr/NaClO process followed by mechanical treatment. Carboxylate groups on the surface of these nanofibers provide negative charges, which are very effective to adsorb radioactive UO22+ in water, evidenced by static adsorption and high resolution transmission electron microscopy (TEM) measurements. The UO22+ adsorption capability of ultrafine cellulose nanofibers was about 167 mg/g, which is 2-3 times higher than those of typical adsorbents such as montmorillonite, ion imprinted polymer particles, modified silica particles/fibrous membranes, and hydrogels. The high UO22+ adsorption capability can be attributed to the very high surface-to-volume ratio, high surface charge density, and hydrophilicity of ultrafine cellulose nanofibers, which can be used as effective media to remove radioactive metals from radio-nuclear wastewater.
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Affiliation(s)
- Hongyang Ma
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
| | - Benjamin S. Hsiao
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
| | - Benjamin Chu
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
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633
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Isolation and characterization of cellulose nanofibers from the aquatic weed water hyacinth—Eichhornia crassipes. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.09.076] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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634
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Abdul Khalil H, Bhat A, Ireana Yusra A. Green composites from sustainable cellulose nanofibrils: A review. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.08.078] [Citation(s) in RCA: 696] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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635
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Bulota M, Tanpichai S, Hughes M, Eichhorn SJ. Micromechanics of TEMPO-oxidized fibrillated cellulose composites. ACS APPLIED MATERIALS & INTERFACES 2012; 4:331-337. [PMID: 22181067 DOI: 10.1021/am201399q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Composites of poly(lactic) acid (PLA) reinforced with TEMPO-oxidized fibrillated cellulose (TOFC) were prepared to 15, 20, 25, and 30% fiber weight fractions. To aid dispersion and to improve stress transfer, we acetylated the TOFC prior to the fabrication of TOFC-PLA composite films. Raman spectroscopy was employed to study the deformation micromechanics in these systems. Microtensile specimens were prepared from the films and deformed in tension with Raman spectra being collected simultaneously during deformation. A shift in a Raman peak initially located at ~1095 cm(-1), assigned to C-O-C stretching of the cellulose backbone, was observed upon deformation, indicating stress transfer from the matrix to the TOFC reinforcement. The highest band shift rate, with respect to strain, was observed in composites having a 30% weight fraction of TOFC. These composites also displayed a significantly higher strain to failure compared to pure acetylated TOFC film, and to the composites having lower weight fractions of TOFC. The stress-transfer processes that occur in microfibrillated cellulose composites are discussed with reference to the micromechanical data presented. It is shown that these TOFC-based composite materials are progressively dominated by the mechanics of the networks, and a shear-lag type stress transfer between fibers.
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Affiliation(s)
- Mindaugas Bulota
- Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16400, 00076-Aalto, Finland.
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636
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Koga H, Azetsu A, Tokunaga E, Saito T, Isogai A, Kitaoka T. Topological loading of Cu(i) catalysts onto crystalline cellulose nanofibrils for the Huisgen click reaction. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15661j] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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637
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Zhang K, Fischer S, Geissler A, Brendler E. Analysis of carboxylate groups in oxidized never-dried cellulose II catalyzed by TEMPO and 4-acetamide-TEMPO. Carbohydr Polym 2012; 87:894-900. [DOI: 10.1016/j.carbpol.2011.08.090] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 08/23/2011] [Accepted: 08/27/2011] [Indexed: 11/29/2022]
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638
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Abstract
Chitin is the second most abundant semicrystalline polysaccharide. Like cellulose, the amorphous domains of chitin can also be removed under certain conditions such as acidolysis to give rise to crystallites in nanoscale, which are the so-called chitin nanocrystals or chitin whiskers (CHWs). CHW together with other organic nanoparticles such as cellulose whisker (CW) and starch nanocrystal show many advantages over traditional inorganic nanoparticles such as easy availability, nontoxicity, biodegradability, low density, and easy modification. They have been widely used as substitutes for inorganic nanoparticles in reinforcing polymer nanocomposites. The research and development of CHW related areas are much slower than those of CW. However, CHWs are still of strategic importance in the resource scarcity periods because of their abundant availability and special properties. During the past decade, increasing studies have been done on preparation of CHWs and their application in reinforcing polymer nanocomposites. Some other applications such as being used as feedstock to prepare chitosan nanoscaffolds have also been investigated. This Article is to review the recent development on CHW related studies.
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Affiliation(s)
- Jian-Bing Zeng
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China.
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639
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Ma H, Burger C, Hsiao BS, Chu B. Nanofibrous Microfiltration Membrane Based on Cellulose Nanowhiskers. Biomacromolecules 2011; 13:180-6. [DOI: 10.1021/bm201421g] [Citation(s) in RCA: 176] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hongyang Ma
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
| | - Christian Burger
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
| | - Benjamin S. Hsiao
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
| | - Benjamin Chu
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400,
United States
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640
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Syverud K, Kirsebom H, Hajizadeh S, Chinga-Carrasco G. Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels. NANOSCALE RESEARCH LETTERS 2011; 6:626. [PMID: 22152032 PMCID: PMC3260332 DOI: 10.1186/1556-276x-6-626] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 12/12/2011] [Indexed: 05/31/2023]
Abstract
Cellulose nanofibrils were produced from P. radiata kraft pulp fibers. The nanofibrillation was facilitated by applying 2,2,6,6-tetramethylpiperidinyl-1-oxyl-mediated oxidation as pretreatment. The oxidized nanofibrils were cross-linked with polyethyleneimine and poly N-isopropylacrylamide-co-allylamine-co-methylenebisacrylamide particles and were frozen to form cryo-structured gels. Samples of the gels were critical-point dried, and the corresponding structures were assessed with scanning electron microscopy. It appears that the aldehyde groups in the oxidized nanofibrils are suitable reaction sites for cross-linking. The cryo-structured materials were spongy, elastic, and thus capable of regaining their shape after a given pressure was released, indicating a successful cross-linking. These novel types of gels are considered potential candidates in biomedical and biotechnological applications.
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Affiliation(s)
- Kristin Syverud
- Paper and Fibre Research Institute (PFI), Høgskolerringen 6b, Trondheim, NO-7491, Norway
| | - Harald Kirsebom
- Department of Biotechnology, Lund University, P.O. Box 124, Lund, SE-22100, Sweden
| | - Solmaz Hajizadeh
- Department of Biotechnology, Lund University, P.O. Box 124, Lund, SE-22100, Sweden
| | - Gary Chinga-Carrasco
- Paper and Fibre Research Institute (PFI), Høgskolerringen 6b, Trondheim, NO-7491, Norway
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641
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Synthesis and Catalytic Features of Hybrid Metal Nanoparticles Supported on Cellulose Nanofibers. Catalysts 2011. [DOI: 10.3390/catal1010083] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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642
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Fukuzumi H, Saito T, Iwamoto S, Kumamoto Y, Ohdaira T, Suzuki R, Isogai A. Pore Size Determination of TEMPO-Oxidized Cellulose Nanofibril Films by Positron Annihilation Lifetime Spectroscopy. Biomacromolecules 2011; 12:4057-62. [DOI: 10.1021/bm201079n] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hayaka Fukuzumi
- Department
of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department
of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Shinichiro Iwamoto
- Department
of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Yoshiaki Kumamoto
- Department
of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
- Global R&D-Processing Development, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi 321-3497, Japan
| | - Toshiyuki Ohdaira
- Research
Institute of Instrumentation
Frontier, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568,
Japan
| | - Ryoichi Suzuki
- Research
Institute of Instrumentation
Frontier, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568,
Japan
| | - Akira Isogai
- Department
of Biomaterials Sciences,
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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643
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Abraham E, Deepa B, Pothan L, Jacob M, Thomas S, Cvelbar U, Anandjiwala R. Extraction of nanocellulose fibrils from lignocellulosic fibres: A novel approach. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.034] [Citation(s) in RCA: 329] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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644
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Besbes I, Vilar MR, Boufi S. Nanofibrillated cellulose from Alfa, Eucalyptus and Pine fibres: Preparation, characteristics and reinforcing potential. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.015] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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645
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Chinga-Carrasco G, Yu Y, Diserud O. Quantitative electron microscopy of cellulose nanofibril structures from Eucalyptus and Pinus radiata kraft pulp fibers. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2011; 17:563-571. [PMID: 21740618 DOI: 10.1017/s1431927611000444] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This work comprises the structural characterization of Eucalyptus and Pinus radiata pulp fibers and their corresponding fibrillated materials, based on quantitative electron microscopy techniques. Compared to hardwood fibers, the softwood fibers have a relatively open structure of the fiber wall outer layers. The fibrillation of the fibers was performed mechanically and chemi-mechanically. In the chemi-mechanical process, the pulp fibers were subjected to a TEMPO-mediated oxidation to facilitate the homogenization. Films were made of the fibrillated materials to evaluate some structural properties. The thicknesses and roughnesses of the films were evaluated with standardized methods and with scanning electron microscopy (SEM), in backscattered electron imaging mode. Field-emission SEM (FE-SEM) and transmission electron microscopy (TEM) were performed to quantify the nanofibril morphology. In this study, we give additional and significant evidences about the suitability of electron microscopy techniques for quantification of nanofibril structures. In addition, we conclude that standard methods are not suitable for estimating the thickness of films having relatively rough surfaces. The results revealed significant differences with respect to the morphology of the fibrillated material. The differences are due to the starting raw material and to the procedure applied for the fibrillation.
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Affiliation(s)
- Gary Chinga-Carrasco
- Paper and Fiber Research Institute (PFI AS), Høgskoleringen 6b, NO-7491 Trondheim, Norway.
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646
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Dialdehyde cellulose microfibers generated from wood pulp by milling-induced periodate oxidation. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.054] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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647
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Veigel S, Müller U, Keckes J, Obersriebnig M, Gindl-Altmutter W. Cellulose nanofibrils as filler for adhesives: effect on specific fracture energy of solid wood-adhesive bonds. CELLULOSE (LONDON, ENGLAND) 2011; 18:1227-1237. [PMID: 26412949 PMCID: PMC4579863 DOI: 10.1007/s10570-011-9576-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 07/05/2011] [Indexed: 05/31/2023]
Abstract
Cellulose nanofibrils were prepared by mechanical fibrillation of never-dried beech pulp and bacterial cellulose. To facilitate the separation of individual fibrils, one part of the wood pulp was surface-carboxylated by a catalytic oxidation using (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) as a catalyst. After fibrillation by a high pressure homogenizer, the obtained aqueous fibril dispersions were directly mixed with different urea-formaldehyde-(UF)-adhesives. To investigate the effect of added cellulose filler on the fracture mechanical properties of wood adhesive bonds, double cantilever beam specimens were prepared from spruce wood. While the highest fracture energy values were observed for UF-bonds filled with untreated nanofibrils prepared from wood pulp, bonds filled with TEMPO-oxidized fibrils showed less satisfying performance. It is proposed that UF-adhesive bonds can be significantly toughened by the addition of only small amounts of cellulose nanofibrils. Thereby, the optimum filler content is largely depending on the adhesive and type of cellulose filler used.
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Affiliation(s)
- Stefan Veigel
- />Department of Material Sciences and Process Engineering, Institute of Wood Science and Technology, BOKU–University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, 3430 Tulln a.d. Donau, Austria
| | - Ulrich Müller
- />Wood K plus–Competence Centre for Wood Composites and Wood Chemistry, St.-Peter-Straße 25, 4021 Linz, Austria
| | - Jozef Keckes
- />Erich Schmid Institute of Materials Science, Austrian Academy of Sciences and Institute of Metal Physics, University of Leoben, Jahnstraße 12, 8700 Leoben, Austria
| | - Michael Obersriebnig
- />Department of Material Sciences and Process Engineering, Institute of Wood Science and Technology, BOKU–University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, 3430 Tulln a.d. Donau, Austria
| | - Wolfgang Gindl-Altmutter
- />Department of Material Sciences and Process Engineering, Institute of Wood Science and Technology, BOKU–University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, 3430 Tulln a.d. Donau, Austria
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648
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Chinga-Carrasco G. Cellulose fibres, nanofibrils and microfibrils: The morphological sequence of MFC components from a plant physiology and fibre technology point of view. NANOSCALE RESEARCH LETTERS 2011; 6:417. [PMID: 21711944 PMCID: PMC3211513 DOI: 10.1186/1556-276x-6-417] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 06/13/2011] [Indexed: 05/19/2023]
Abstract
During the last decade, major efforts have been made to develop adequate and commercially viable processes for disintegrating cellulose fibres into their structural components. Homogenisation of cellulose fibres has been one of the principal applied procedures. Homogenisation has produced materials which may be inhomogeneous, containing fibres, fibres fragments, fibrillar fines and nanofibrils. The material has been denominated microfibrillated cellulose (MFC). In addition, terms relating to the nano-scale have been given to the MFC material. Several modern and high-tech nano-applications have been envisaged for MFC. However, is MFC a nano-structure? It is concluded that MFC materials may be composed of (1) nanofibrils, (2) fibrillar fines, (3) fibre fragments and (4) fibres. This implies that MFC is not necessarily synonymous with nanofibrils, microfibrils or any other cellulose nano-structure. However, properly produced MFC materials contain nano-structures as a main component, i.e. nanofibrils.
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Affiliation(s)
- Gary Chinga-Carrasco
- Paper and Fibre Research Institute (PFI AS), Høgskolerringen 6b, 7491 Trondheim, Norway.
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Klemm D, Kramer F, Moritz S, Lindström T, Ankerfors M, Gray D, Dorris A. Nanocelluloses: A New Family of Nature-Based Materials. Angew Chem Int Ed Engl 2011; 50:5438-66. [DOI: 10.1002/anie.201001273] [Citation(s) in RCA: 3043] [Impact Index Per Article: 234.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 07/29/2010] [Indexed: 11/09/2022]
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Klemm D, Kramer F, Moritz S, Lindström T, Ankerfors M, Gray D, Dorris A. Nanocellulosen: eine neue Familie naturbasierter Materialien. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201001273] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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