101
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Evaluation of Acetaminophen Release from Biodegradable Poly (Vinyl Alcohol) (PVA) and Nanocellulose Films Using a Multiphase Release Mechanism. NANOMATERIALS 2020; 10:nano10020301. [PMID: 32050630 PMCID: PMC7075188 DOI: 10.3390/nano10020301] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/24/2020] [Accepted: 01/28/2020] [Indexed: 11/17/2022]
Abstract
Biodegradable polymers hold great therapeutic value, especially through the addition of additives for controlled drug release. Nanocellulose has shown promise in drug delivery, yet usually requires chemical crosslinking with harsh acids and solvents. Nanocellulose fibrils (NFCs) and 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO)-mediated oxidized nanocellulose fibrils (TNFCs) with poly (vinyl alcohol) (PVA) could be aqueously formulated to control the release of model drug acetaminophen over 144 hours. The release was evaluated with a multiphase release mechanism to determine which mechanism(s) contribute to the overall release and to what degree. Doing so indicated that the TNFCs in PVA control the release of acetaminophen more than NFCs in PVA. Modeling showed that this release was mostly due to burst release-drug coming off the immediate surface, rather than diffusing out of the matrix.
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102
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Araki J, Miyayama M. Wet spinning of cellulose nanowhiskers; fiber yarns obtained only from colloidal cellulose crystals. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122116] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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103
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Yang X, Reid MS, Olsén P, Berglund LA. Eco-Friendly Cellulose Nanofibrils Designed by Nature: Effects from Preserving Native State. ACS NANO 2020; 14:724-735. [PMID: 31886646 DOI: 10.1021/acsnano.9b07659] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cellulose nanofibrils (CNFs) show high modulus and strength and are already used in industrial applications. Mechanical properties of neat CNF films or CNF-polymer matrix nanocomposites are usually much better than for polymer matrix composite films reinforced by clay, graphene, graphene oxide, or carbon nanotubes. In order to obtain small CNF diameter and colloidal stability, chemical modification has so far been necessary, but this increases cost and reduces eco-friendly attributes. In this study, an unmodified holocellulose CNF (Holo-CNF) with small diameter is obtained from mildly peracetic acid delignified wood fibers. CNF is readily defibrillated by low-energy kitchen blender processing. The hemicellulose coating on individual fibrils in the wood plant cell wall is largely preserved in Holo-CNF. This "native" CNF shows well-preserved native fibril structure in terms of length (∼2.1 μm), diameter (<5 nm), high crystallinity, high cellulose molar mass, electronegative charge, and limited mechanical processing damage. The hemicellulose coating contributes mechanical properties and high optical transmittance for CNF nanopaper, which can otherwise only be achieved with chemically modified CNFs. The CNF nanopaper shows superior mechanical properties with a Young's modulus of 21 GPa and an ultimate strength of 320 MPa. Moreover, hemicellulose imparts recyclability from the dried state. Altogether, this native CNF represents a class of colloidally stable, eco-friendly, low-cost CNF of small diameter for large-scale applications of nanopaper and nanomaterials.
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104
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Tsuchiya K, Yilmaz N, Miyamoto T, Masunaga H, Numata K. Zwitterionic Polypeptides: Chemoenzymatic Synthesis and Loosening Function for Cellulose Crystals. Biomacromolecules 2020; 21:1785-1794. [PMID: 31944665 DOI: 10.1021/acs.biomac.9b01700] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A polypeptide with a GlyHisGly repeating sequence containing zwitterionic structures that effectively interact with cellulose was synthesized for dissociation of cellulose crystals. Polypeptide with the GlyHisGly sequence was synthesized by chemoenzymatic polymerization and postfunctionalization of the His residues was performed to afford imidazolium butyrate on the side chains. The resulting zwitterionic polypeptide effectively dissociated bundles of tunicate cellulose nanocrystals, even when the conditions were mild and the concentration of the polypeptide was as low as 1-2 mg mL-1. Polypeptide treatment also affected the morphology of the cell walls in cultured plant cells, and the cellulose microfibril networks and amorphous polysaccharide layer were dissociated according to atomic force microscopy (AFM). The zwitterionic polypeptide treatment did not change the crystal structure of the cellulose nanocrystals. Analysis of the mechanical properties of the cellulose nanocrystals by force curve measurements using AFM revealed that the elastic modulus of the cellulose nanocrystals increased after treatment with the zwitterionic polypeptide, indicating that the amorphous part of the cellulose nanocrystals was removed by interactions with the polypeptide. At a concentration of the polypeptide that enabled the dissociation of the cellulose network, the zwitterionic polypeptide showed negligible cytotoxicity to the plant cells. The mild and noncytotoxic technique for loosening cellulose microfibrils/nanocrystals that was developed in this study has tremendous significance for the modification of cellulose in terms of polymer chemistry, material science, and plant biotechnology.
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Affiliation(s)
- Kousuke Tsuchiya
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Neval Yilmaz
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takaaki Miyamoto
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Keiji Numata
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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105
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Yamada T, Kitamura T, Morita Y, Mizuno M, Yubuta K, Teshima K. Growth of dispersed hydroxyapatite crystals highly intertwined with TEMPO-oxidized cellulose nanofiber. CrystEngComm 2020. [DOI: 10.1039/d0ce00740d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroxyapatite was grown with TEMPO-oxidized cellulose nanofiber as gel template, providing a highly intertwined, dispersed crystalline composite among the fibers.
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Affiliation(s)
- Tetsuya Yamada
- Research Initiative for Supra-Materials
- Shinshu University
- Nagano 380-8553
- Japan
| | | | - Yuko Morita
- R&D Headquarters
- DKS Co. Ltd
- Kyoto 601-8391
- Japan
| | - Masahiro Mizuno
- Department of Materials Chemistry
- Faculty of Engineering
- Shinshu University
- Nagano 380-8553
- Japan
| | - Kunio Yubuta
- Institute for Materials Research
- Tohoku University
- Sendai 980-8577
- Japan
| | - Katsuya Teshima
- Research Initiative for Supra-Materials
- Shinshu University
- Nagano 380-8553
- Japan
- Department of Materials Chemistry
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106
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Daicho K, Kobayashi K, Fujisawa S, Saito T. Crystallinity-Independent yet Modification-Dependent True Density of Nanocellulose. Biomacromolecules 2019; 21:939-945. [DOI: 10.1021/acs.biomac.9b01584] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuho Daicho
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kayoko Kobayashi
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Shuji Fujisawa
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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107
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Mendoza DJ, Browne C, Raghuwanshi VS, Simon GP, Garnier G. One-shot TEMPO-periodate oxidation of native cellulose. Carbohydr Polym 2019; 226:115292. [DOI: 10.1016/j.carbpol.2019.115292] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 10/26/2022]
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108
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Abstract
Cellulose widely existed in plants and bacteria, which takes important effect on the synthesis of macromolecule polymer material. Because of its great material properties, the cellulose nanocrystal (CNC) showed its necessary prospect in various industrial applications. As a renewable future material, the preparation methods of the CNC were reviewed in this paper. Meanwhile, the important applications of CNC in the field of composites, barrier film, electronics, and energy consumption were also mentioned with brief introductions. The summarized preparations and considerable applications provided operable ideas and methods for the future high-end and eco-friendly functional composites. Suggestions for potential applications were also discussed.
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109
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Dachavaram SS, Moore JP, Bommagani S, Penthala NR, Calahan JL, Delaney SP, Munson EJ, Batta‐Mpouma J, Kim J, Hestekin JA, Crooks PA. A Facile Microwave Assisted TEMPO/NaOCl/Oxone (KHSO
5
) Mediated Micron Cellulose Oxidation Procedure: Preparation of Two Nano TEMPO‐Cellulose Forms. STARCH-STARKE 2019. [DOI: 10.1002/star.201900213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Soma Shekar Dachavaram
- Department of Pharmaceutical Sciences, College of Pharmacy University of Arkansas for Medical Sciences Little Rock AR 72205 USA
| | - John P. Moore
- Department of Chemical Engineering University of Arkansas Fayetteville AR 72701 USA
| | - Shobanbabu Bommagani
- Department of Pharmaceutical Sciences, College of Pharmacy University of Arkansas for Medical Sciences Little Rock AR 72205 USA
| | - Narsimha R. Penthala
- Department of Pharmaceutical Sciences, College of Pharmacy University of Arkansas for Medical Sciences Little Rock AR 72205 USA
| | - Julie L. Calahan
- Department of Pharmaceutical Sciences University of Kentucky Lexington KY 40536 USA
| | - Sean P. Delaney
- Department of Pharmaceutical Sciences University of Kentucky Lexington KY 40536 USA
| | - Eric J. Munson
- Department of Pharmaceutical Sciences University of Kentucky Lexington KY 40536 USA
| | - Joseph Batta‐Mpouma
- Microelectronics and Photonics Graduate Program Institute for Nanoscience and Engineering University of Arkansas Fayetteville AR 72701 USA
- Department of Biological Engineering University of Arkansas Fayetteville AR 72701 USA
| | - Jin‐Woo Kim
- Microelectronics and Photonics Graduate Program Institute for Nanoscience and Engineering University of Arkansas Fayetteville AR 72701 USA
- Department of Biological Engineering University of Arkansas Fayetteville AR 72701 USA
| | - Jamie A. Hestekin
- Department of Chemical Engineering University of Arkansas Fayetteville AR 72701 USA
| | - Peter A. Crooks
- Department of Pharmaceutical Sciences, College of Pharmacy University of Arkansas for Medical Sciences Little Rock AR 72205 USA
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110
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Qin F, Fang Z, Zhou J, Sun C, Chen K, Ding Z, Li G, Qiu X. Efficient Removal of Cu2+ in Water by Carboxymethylated Cellulose Nanofibrils: Performance and Mechanism. Biomacromolecules 2019; 20:4466-4475. [DOI: 10.1021/acs.biomac.9b01198] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Zhiqiang Fang
- South China Institute of Collaborative Innovation, South China University of Technology, Dongguan 221116, Guangdong, P. R. China
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111
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Lu Y, Zhang P, Fan M, Jiang P, Bao Y, Gao X, Xia J. Dual bond synergy enhancement to mechanical and thermal properties of castor oil-based waterborne polyurethane composites. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121832] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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112
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Chao FC, Wu MH, Chen LC, Lin HL, Liu DZ, Ho HO, Sheu MT. Preparation and characterization of chemically TEMPO-oxidized and mechanically disintegrated sacchachitin nanofibers (SCNF) for enhanced diabetic wound healing. Carbohydr Polym 2019; 229:115507. [PMID: 31826505 DOI: 10.1016/j.carbpol.2019.115507] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/14/2019] [Accepted: 10/18/2019] [Indexed: 11/16/2022]
Abstract
TEMPO-oxidization and mechanical disintegration were utilized to develop sacchachitin nanofibers (SCNF) with a 3D gel structure for being an ideal scaffold. Mechanically disintegrated SCNF (MDSCNF) with NanoLyzer® at 20,000 psi for 5 cycles and TEMPO-oxidized SCNF (TOSCNF) produced with 5.0 and 10.0 mmole NaClO/g SC was designated as SCN5, T050SC, and T100SC, respectively. All 2% MDSCNF suspensions were demonstrated to be in gel form, while all except T100SC of 2% TOSCNF suspensions showed to be wet fiber-like hydrogel. In diabetic wound healing study, both SCN5 and T050SC incorporated in AMPS (2-acrylamide-2-methyl-propane sulfonate)-based wound dressing were showed to accelerate diabetic wound healing forming nearly the same as normal tissues. T050SC/H further provided the healed wound with growth of sweat glands and hair follicles indicating the wound had healed as functional tissue. Conclusively, TEMPO-oxidized SCNF-based hydrogel scaffolds showed greater potentials in tissue regeneration due to its unique physical and chemical properties.
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Affiliation(s)
- Fang-Ching Chao
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan, ROC.
| | - Meng-Huang Wu
- Department of Orthopedics, Taipei Medical University Hospital, Taipei, Taiwan, ROC; Department of Orthopedics, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC.
| | - Ling-Chun Chen
- Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu, Taiwan, ROC.
| | - Hong-Liang Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC.
| | - Der-Zen Liu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC.
| | - Hsiu-O Ho
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan, ROC.
| | - Ming-Thau Sheu
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan, ROC.
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113
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Bogdanova O, Istomina A, Glushkova N, Belousov S, Kuznetsov N, Polyakov D, Malakhov S, Krasheninnikov S, Bakirov A, Kamyshinsky R, Vasiliev A, Streltsov D, Chvalun S. Effect of exfoliating agent on rheological behavior of β-chitin fibrils in aqueous suspensions and on mechanical properties of poly(acrylic acid)/β-chitin composites. Int J Biol Macromol 2019; 139:161-169. [DOI: 10.1016/j.ijbiomac.2019.07.194] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/22/2019] [Accepted: 07/28/2019] [Indexed: 11/29/2022]
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114
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Alves L, Ferraz E, Gamelas J. Composites of nanofibrillated cellulose with clay minerals: A review. Adv Colloid Interface Sci 2019; 272:101994. [PMID: 31394436 DOI: 10.1016/j.cis.2019.101994] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 11/27/2022]
Abstract
Biopolymers-based composites are, in general, environmentally friendly materials, which can be obtained from renewable sources. Some of them can also present promising properties to be used in food packaging and electronic devices, being thus logical substitutes to petroleum-based polymers, specifically plastics. Cellulose nanofibrils (CNF) obtained by chemical/enzymatic pre-treatments followed by a mechanical treatment appear as a new suitable biomaterial. However, CNF are still quite expensive materials, due to the required chemicals/equipment/energy involved, and additionally, they present some limitations such as high hydrophilicity/high water vapour permeability. The combination of CNF with clay minerals, such as montmorillonite or kaolinite, as widely available geo-resources, represents an excellent way to reduce the amount of CNF used, enabling the production of valuable materials and reducing costs; and, at the same time it is possible to improve the characteristics of the formed materials, such as mechanical, gas barrier and fire retardancy properties, if appropriate conditions of preparation are used. Nevertheless, to obtain hybrid CNF/clay composites with superior properties it is necessary to ensure a good dispersion of the inorganic material in the CNF suspension and a good compatibility among the inorganic and organic components. To fulfil this goal, several strategies can be considered, including physical treatments of the suspensions, CNF and clay surface chemical modifications, and the use of a coupling agent. In this review article, the state-of-the-art on a new emerging generation of composites (films, foams or coatings) based on nanofibrillated cellulose and nanoclay, with focus on strategies for their preparation and most relevant achievements is critically reviewed, bearing in mind their potential application as substitutes for common plastics. A third component has been eventually added to these organic-inorganic hybrids, e.g., chitosan, carboxymethylcellulose, borate or epoxy resin, to enhance specific characteristics of the material. Some general background on the production of different types of CNF and their main properties is previously provided.
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115
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Istomina AP, Bogdanova OI, Streltsov DR, Chvalun SN. Stability of Suspensions of α-Chitin Nanocrystals Obtained by TEMPO Oxidation. POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19050080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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116
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Zhou S, Nyholm L, Strømme M, Wang Z. Cladophora Cellulose: Unique Biopolymer Nanofibrils for Emerging Energy, Environmental, and Life Science Applications. Acc Chem Res 2019; 52:2232-2243. [PMID: 31290643 DOI: 10.1021/acs.accounts.9b00215] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Because of its natural abundance, hierarchical fibrous structure, mechanical flexibility, potential for chemical modification, biocompatibility, renewability, and abundance, cellulose is one of the most promising green materials for a bio-based future and sustainable economy. Cellulose derived from wood or bacteria has dominated the industrial cellulose market and has been developed to produce a number of advanced materials for applications in energy storage, environmental, and biotechnology areas. However, Cladophora cellulose (CC) extracted from green algae has unprecedented advantages over those celluloses because of its high crystallinity (>95%), low moisture adsorption capacity, excellent solution processability, high porosity in the mesoporous range, and associated high specific surface area. The unique physical and chemical properties of CC can add new features to and enhance the performance of nanocellulose-based materials, and these attributes have attracted a great deal of research interest over the past decade. This Account summarizes our recent research on the preparation, characterization, functionalization, and versatile applications of CC. Our aim is to provide a comprehensive overview of the uniqueness of CC with respect to material structure, properties, and emerging applications. We discuss the potential of CC in energy storage, environmental science, and life science, with emphasis on applications in which its properties are superior to those of other nanocellulose forms. Specifically, we discuss the production of the first-ever paper battery based on CC. This battery has initiated a rising interest in the development of sustainable paper-based energy storage devices, where cellulose is used as a combined building block and binder for paper electrodes of various types in combination with carbon, conducting polymers, and other electroactive materials. High-active-mass and high-mass-loading paper electrodes can be made in which the CC acts as a high-surface-area and porous substrate while a thin layer of electroactive material is coated on individual nanofibrils. We have shown that CC membranes can be used directly as battery separators because of their low moisture content, high mesoporosity, high thermal stability, and good electrolyte wettability. The safety, stability, and capacity of lithium-ion batteries can be enhanced simply by using CC-based separators. Moreover, the high chemical modifiability and adjustable porosity of dried CC papers allow them to be used as advanced membranes for environmental science (water and air purification, pollutant adsorption) and life science (virus isolation, protein recovery, hemodialysis, DNA extraction, bioactive substrates). Finally, we outline some concluding perspectives on the challenges and future directions of CC research with the aim to open up yet unexplored fields of use for this interesting material.
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Affiliation(s)
- Shengyang Zhou
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, Uppsala 751 21, Sweden
| | - Leif Nyholm
- Department of Chemistry-Ångström, Uppsala University, Box 538, Uppsala 751 21, Sweden
| | - Maria Strømme
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, Uppsala 751 21, Sweden
| | - Zhaohui Wang
- Department of Chemistry-Ångström, Uppsala University, Box 538, Uppsala 751 21, Sweden
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117
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Goi Y, Fujisawa S, Saito T, Yamane K, Kuroda K, Isogai A. Dual Functions of TEMPO-Oxidized Cellulose Nanofibers in Oil-in-Water Emulsions: A Pickering Emulsifier and a Unique Dispersion Stabilizer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10920-10926. [PMID: 31340122 DOI: 10.1021/acs.langmuir.9b01977] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The emulsifying and dispersing mechanisms of oil-in-water emulsions stabilized by 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-oxidized cellulose nanofibers (CNFs) have been investigated. The emulsifying mechanism was studied by changing the oil/water interfacial tension from 8.5 to 53.3 mN/m using various types of oils. The results showed that the higher the oil/water interfacial tension, the greater is the amount of CNFs adsorbed at the oil/water interface, making the CNF-adsorbed oil-in-water emulsions thermodynamically more stable. Moreover, the amount of CNFs adsorbed on the surfaces of the oil droplets increased with increasing interfacial area. The dispersion stability of the oil droplets was dominated by the CNF concentration in the water phase. Above the critical concentration (0.15% w/w), the CNFs formed network structures in the water phase, and the emulsion was effectively stabilized against creaming. Emulsion formation and the CNF network structures in the emulsion were visualized by cryo-scanning electron microscopy.
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Affiliation(s)
- Yohsuke Goi
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo 113-8657 , Japan
- Rheocrysta R&D Group Life Sciences R&D Department , R&D Headquarters, DKS Co. Ltd. , 5 Ogawara-cho, Kisshoin , Minami-ku, Kyoto 601-8391 , Japan
| | - Shuji Fujisawa
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo 113-8657 , Japan
| | - Tsuguyuki Saito
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo 113-8657 , Japan
| | - Kenichi Yamane
- Forestry and Forest Products Research Institute , Tsukuba 305-8687 , Japan
| | - Katsushi Kuroda
- Forestry and Forest Products Research Institute , Tsukuba 305-8687 , Japan
| | - Akira Isogai
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo 113-8657 , Japan
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118
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Silylation of TEMPO oxidized nanocellulose from oil palm empty fruit bunch by 3-aminopropyltriethoxysilane. Int J Biol Macromol 2019; 135:106-112. [DOI: 10.1016/j.ijbiomac.2019.05.161] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/22/2019] [Accepted: 05/21/2019] [Indexed: 11/22/2022]
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119
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Fabrication of thermo- and pH-sensitive cellulose nanofibrils-reinforced hydrogel with biomass nanoparticles. Carbohydr Polym 2019; 215:289-295. [DOI: 10.1016/j.carbpol.2019.03.100] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/25/2019] [Accepted: 03/28/2019] [Indexed: 11/20/2022]
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120
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Barnes E, Jefcoat JA, Alberts EM, McKechnie MA, Peel HR, Buchanan JP, Weiss CA, Klaus KL, Mimun LC, Warner CM. Effect of Cellulose Nanofibrils and TEMPO-mediated Oxidized Cellulose Nanofibrils on the Physical and Mechanical Properties of Poly(vinylidene fluoride)/Cellulose Nanofibril Composites. Polymers (Basel) 2019; 11:polym11071091. [PMID: 31252644 PMCID: PMC6680576 DOI: 10.3390/polym11071091] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 11/16/2022] Open
Abstract
Cellulose nanofibrils (CNFs) are high aspect ratio, natural nanomaterials with high mechanical strength-to-weight ratio and promising reinforcing dopants in polymer nanocomposites. In this study, we used CNFs and oxidized CNFs (TOCNFs), prepared by a 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation process, as reinforcing agents in poly(vinylidene fluoride) (PVDF). Using high-shear mixing and doctor blade casting, we prepared free-standing composite films loaded with up to 5 wt % cellulose nanofibrils. For our processing conditions, all CNF/PVDF and TOCNF/PVDF films remain in the same crystalline phase as neat PVDF. In the as-prepared composites, the addition of CNFs on average increases crystallinity, whereas TOCNFs reduces it. Further, addition of CNFs and TOCNFs influences properties such as surface wettability, as well as thermal and mechanical behaviors of the composites. When compared to neat PVDF, the thermal stability of the composites is reduced. With regards to bulk mechanical properties, addition of CNFs or TOCNFs, generally reduces the tensile properties of the composites. However, a small increase (~18%) in the tensile modulus was observed for the 1 wt % TOCNF/PVDF composite. Surface mechanical properties, obtained from nanoindentation, show that the composites have enhanced performance. For the 5 wt % CNF/PVDF composite, the reduced modulus and hardness increased by ~52% and ~22%, whereas for the 3 wt % TOCNF/PVDF sample, the increase was ~23% and ~25% respectively.
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Affiliation(s)
- Eftihia Barnes
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA.
| | - Jennifer A Jefcoat
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | | | - Mason A McKechnie
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - Hannah R Peel
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - J Paige Buchanan
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - Charles A Weiss
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - Kyle L Klaus
- Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - L Christopher Mimun
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
| | - Christopher M Warner
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS, USA
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121
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Kaldéus T, Träger A, Berglund LA, Malmström E, Lo Re G. Molecular Engineering of the Cellulose-Poly(Caprolactone) Bio-Nanocomposite Interface by Reactive Amphiphilic Copolymer Nanoparticles. ACS NANO 2019; 13:6409-6420. [PMID: 31083978 DOI: 10.1021/acsnano.8b08257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A molecularly engineered water-borne reactive compatibilizer is designed for tuning of the interface in melt-processed thermoplastic poly(caprolactone) (PCL)-cellulose nanocomposites. The mechanical properties of the nanocomposites are studied by tensile testing and dynamic mechanical analysis. The reactive compatibilizer is a statistical copolymer of 2-(dimethylamino)ethyl methacrylate and 2-hydroxy methacrylate, which is subsequently esterified and quaternized. Quaternized ammonium groups in the reactive compatibilizer electrostatically match the negative surface charge of cellulose nanofibrils (CNFs). This results in core-shell CNFs with a thin uniform coating of the compatibilizer. This promotes the dispersion of CNFs in the PCL matrix, as concluded from high-resolution scanning electron microscopy and atomic force microscopy. Moreover, the compatibilizer "shell" has methacrylate functionalities, which allow for radical reactions during processing and links covalently with PCL. Compared to the bio-nanocomposite reference, the reactive compatibilizer (<4 wt %) increased Young's modulus by about 80% and work to fracture 10 times. Doubling the amount of peroxide caused further improved mechanical properties, in support of effects from higher cross-link density at the interface. Further studies of interfacial design in specific nanocellulose-based composite materials are warranted since the detrimental effects from CNFs agglomeration may have been underestimated.
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Affiliation(s)
| | | | | | | | - Giada Lo Re
- Department of Industrial and Materials Science, Division of Engineering Materials , Chalmers University of Technology , Rännvägen 2 , SE-412 96 Gothenburg , Sweden
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Hsu HH, Zhong W. Nanocellulose-Based Conductive Membranes for Free-Standing Supercapacitors: A Review. MEMBRANES 2019; 9:E74. [PMID: 31242574 PMCID: PMC6630382 DOI: 10.3390/membranes9060074] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 06/19/2019] [Indexed: 12/02/2022]
Abstract
There is currently strong demand for the development of advanced energy storage devices with inexpensive, flexibility, lightweight, and eco-friendly materials. Cellulose is considered as a suitable material that has the potential to meet the requirements of the advanced energy storage devices. Specifically, nanocellulose has been shown to be an environmentally friendly material that has low density and high specific strength, Young's modulus, and surface-to-volume ratio compared to synthetic materials. Furthermore, it can be isolated from a variety of plants through several simple and rapid methods. Cellulose-based conductive composite membranes can be assembled into supercapacitors to achieve free-standing, lightweight, and flexible energy storage devices. Therefore, they have attracted extensive research interest for the development of small-size wearable devices, implantable sensors, and smart skin. Various conductive materials can be loaded onto nanocellulose substrates to endow or enhance the electrochemical performance of supercapacitors by taking advantage of the high loading capacity of nanocellulose membranes for brittle conductive materials. Several factors can impact the electronic performance of a nanocellulose-based supercapacitor, such as the methods of loading conductive materials and the types of conductive materials, as will be discussed in this review.
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Affiliation(s)
- Helen H Hsu
- Department of Biosystems Engineering, University of Manitoba, 75A Chancellor's Circle, Winnipeg, MB R3T2N2, Canada.
| | - Wen Zhong
- Department of Biosystems Engineering, University of Manitoba, 75A Chancellor's Circle, Winnipeg, MB R3T2N2, Canada.
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123
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Hwang WK, Choy S, Song SL, Lee J, Hwang DS, Lee KY. Enhancement of nanofluid stability and critical heat flux in pool boiling with nanocellulose. Carbohydr Polym 2019; 213:393-402. [DOI: 10.1016/j.carbpol.2019.03.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 11/29/2022]
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124
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Niskanen I, Forsberg V, Zakrisson D, Reza S, Hummelgård M, Andres B, Fedorov I, Suopajärvi T, Liimatainen H, Thungström G. Determination of nanoparticle size using Rayleigh approximation and Mie theory. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.02.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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125
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Preparation of cellulose nanomaterials via cellulose oxalates. Carbohydr Polym 2019; 213:208-216. [DOI: 10.1016/j.carbpol.2019.02.056] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/20/2019] [Accepted: 02/16/2019] [Indexed: 11/20/2022]
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126
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Li H, Cheng F, Chávez-Madero C, Choi J, Wei X, Yi X, Zheng T, He J. Manufacturing and physical characterization of absorbable oxidized regenerated cellulose braided surgical sutures. Int J Biol Macromol 2019; 134:56-62. [PMID: 31071394 DOI: 10.1016/j.ijbiomac.2019.05.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/30/2019] [Accepted: 05/05/2019] [Indexed: 01/28/2023]
Abstract
Suture is an important part of surgical operation, and closure of the wound associated with this procedure continuous to be a challenge in postoperative care. Currently, oxidized regenerated cellulose (ORC) is widely used in the absorption of hemostatic materials. However, there is no ORC medical suture product in the market. The objective of this article was to prepare novel braided sutures by TEMPO-mediated oxidation regenerated cellulose (TORC) to achieve a suturable material with biodegradability and ideal mechanical properties. Regenerated cellulose (RC) strands were made into sutures on a circular braiding machine, and TEMPO-mediated oxidation treatment was introduced alternatively after braiding. The RC sutures under different oxidation time were characterized by ATR-FTIR, electrical conductivity, XRD analysis, physical properties and in vitro degradation property. We further demonstrate that the RC sutures were oxidized and formed the carboxylic (-COOH) functional group. With the extension of oxidation duration, the carboxyl content in TORC sutures increased gradually from 5.1 to 10.4% and the strength, weight, and diameter of TORC sutures decreased gradually. Moreover, we proved that the knot-pull strength of TORC-45 declined by 77.8% after 28 days, thus this sutures fulfilled U.S. Pharmacopeia requirement of knot-pull strength. We have shown that TEMPO oxidation reaction significantly promoted the degradation of TORC sutures. Overall, TORC sutures were successfully produced with favorable biodegradability, revealing potential prospects of clinical applications.
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Affiliation(s)
- Hongbin Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China; College of Light Industry and Textile, Qiqihar University, Qiqihar, Heilongjiang 161000, China
| | - Feng Cheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Carolina Chávez-Madero
- Departamento de Ingeniería Mecatrónica y Eléctrica, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, CP 64849 Monterrey, Nuevo León, Mexico
| | - Jiwon Choi
- Saint Mark's School, Southborough, MA 01772, United States
| | - Xinjing Wei
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xiaotong Yi
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Ting Zheng
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150010, China
| | - Jinmei He
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
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127
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Yang H, Zhang Y, Kato R, Rowan SJ. Preparation of cellulose nanofibers from Miscanthus x. Giganteus by ammonium persulfate oxidation. Carbohydr Polym 2019; 212:30-39. [DOI: 10.1016/j.carbpol.2019.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 10/27/2022]
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128
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Structure and rheology of aqueous suspensions and hydrogels of cellulose nanofibrils: Effect of volume fraction and ionic strength. Carbohydr Polym 2019; 211:315-321. [DOI: 10.1016/j.carbpol.2019.01.099] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/28/2019] [Accepted: 01/28/2019] [Indexed: 11/18/2022]
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129
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Khanjani P, Ristolainen M, Kosonen H, Virtanen P, Ceccherini S, Maloney T, Vuorinen T. Time-triggered calcium ion bridging in preparation of films of oxidized microfibrillated cellulose and pulp. Carbohydr Polym 2019; 218:63-67. [PMID: 31221344 DOI: 10.1016/j.carbpol.2019.04.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 11/18/2022]
Abstract
One of the main trends in developing bio-based materials is to improve their mechanical and physical properties using MFC derived from sustainable natural sources and compatible low-cost chemicals. The strength of anionic MFC based materials can be increased with addition of multivalent cations. However, direct mixing of solutions of multivalent cations with oxidized MFC may result in immediate, uncontrollable fibril aggregation and flock formation. The aim of this study was to design a method where Ca2+ ions liberate from solid CaCO3 particles on bleached hardwood (birch) kraft pulp, which was mixed with oxidized MFC and crosslink it to tailor the mechanical properties of the dried structure. In few minutes after adding acetic anhydride, pH of the wet film dropped from 7.3-4.8 through liberation of acetic acid and CaCO3 particles solubilized releasing Ca2+. The novel method could be applied on industrial scale for improving the performance of packaging materials.
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Affiliation(s)
- Pegah Khanjani
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, Aalto, 00076, Finland.
| | | | - Harri Kosonen
- UPM Research Center, FIN-53200, Lappeenranta, Finland.
| | - Pasi Virtanen
- UPM Research Center, FIN-53200, Lappeenranta, Finland.
| | - Sara Ceccherini
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, Aalto, 00076, Finland.
| | - Thaddeus Maloney
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, Aalto, 00076, Finland.
| | - Tapani Vuorinen
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, Aalto, 00076, Finland.
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130
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Lin YJ, Shatkin JA, Kong F. Evaluating mucoadhesion properties of three types of nanocellulose in the gastrointestinal tract in vitro and ex vivo. Carbohydr Polym 2019; 210:157-166. [DOI: 10.1016/j.carbpol.2019.01.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 02/05/2023]
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131
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Chen C, Petterson T, Illergård J, Ek M, Wågberg L. Influence of Cellulose Charge on Bacteria Adhesion and Viability to PVAm/CNF/PVAm-Modified Cellulose Model Surfaces. Biomacromolecules 2019; 20:2075-2083. [DOI: 10.1021/acs.biomac.9b00297] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Chao Chen
- Department of Fibre and Polymer Technology, School of Engineering Science in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology. Teknikringen 56-58, Stockholm 100 44, Sweden
| | - Torbjörn Petterson
- Department of Fibre and Polymer Technology, School of Engineering Science in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology. Teknikringen 56-58, Stockholm 100 44, Sweden
| | - Josefin Illergård
- Department of Fibre and Polymer Technology, School of Engineering Science in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology. Teknikringen 56-58, Stockholm 100 44, Sweden
| | - Monica Ek
- Department of Fibre and Polymer Technology, School of Engineering Science in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology. Teknikringen 56-58, Stockholm 100 44, Sweden
| | - Lars Wågberg
- Department of Fibre and Polymer Technology, School of Engineering Science in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology. Teknikringen 56-58, Stockholm 100 44, Sweden
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132
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Novel pH-responsive granules with tunable volumes from oxidized corn starches. Carbohydr Polym 2019; 208:201-212. [DOI: 10.1016/j.carbpol.2018.12.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 01/19/2023]
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133
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Comparative study of aramid nanofiber (ANF) and cellulose nanofiber (CNF). Carbohydr Polym 2019; 208:372-381. [DOI: 10.1016/j.carbpol.2018.12.086] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/30/2018] [Accepted: 12/26/2018] [Indexed: 12/20/2022]
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134
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Preparation and characterization of the ribbon-like cellulose nanocrystals by the cellulase enzymolysis of cotton pulp fibers. Carbohydr Polym 2019; 207:713-719. [DOI: 10.1016/j.carbpol.2018.12.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/15/2018] [Accepted: 12/15/2018] [Indexed: 11/23/2022]
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135
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A bio-mechanical process for cellulose nanofiber production – Towards a greener and energy conservation solution. Carbohydr Polym 2019; 208:191-199. [DOI: 10.1016/j.carbpol.2018.12.071] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 11/19/2018] [Accepted: 12/21/2018] [Indexed: 01/05/2023]
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136
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Benselfelt T, Nordenström M, Hamedi MM, Wågberg L. Ion-induced assemblies of highly anisotropic nanoparticles are governed by ion-ion correlation and specific ion effects. NANOSCALE 2019; 11:3514-3520. [PMID: 30742178 DOI: 10.1039/c8nr10175b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Ion-induced assemblies of highly anisotropic nanoparticles can be explained by a model consisting of ion-ion correlation and specific ion effects: dispersion interactions, metal-ligand complexes, and local acidic environments. Films of cellulose nanofibrils and montmorillonite clay were treated with different ions, and their subsequent equilibrium swelling in water was related to important parameters of the model in order to investigate the relative importance of the mechanisms. Ion-ion correlation was shown to be the fundamental attraction, supplemented by dispersion interaction for polarizable ions such as Ca2+ and Ba2+, or metal-ligand complexes for ions such as Cu2+, Al3+ and Fe3+. Ions that form strong complexes induce local acidic environments that also contribute to the assembly. These findings are summarized in a comprehensive semi-quantitative model and are important for the design of nanomaterials and for understanding biological systems where specific ions are involved.
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Affiliation(s)
- Tobias Benselfelt
- Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56-58, 10044, Stockholm, Sweden
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137
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Bercea M, Biliuta G, Avadanei M, Baron RI, Butnaru M, Coseri S. Self-healing hydrogels of oxidized pullulan and poly(vinyl alcohol). Carbohydr Polym 2019; 206:210-219. [DOI: 10.1016/j.carbpol.2018.11.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/13/2018] [Accepted: 11/01/2018] [Indexed: 12/28/2022]
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138
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Wang Z, Zhao S, Huang A, Zhang S, Li J. Mussel-inspired codepositing interconnected polypyrrole nanohybrids onto cellulose nanofiber networks for fabricating flexible conductive biobased composites. Carbohydr Polym 2019; 205:72-82. [DOI: 10.1016/j.carbpol.2018.10.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/29/2018] [Accepted: 10/05/2018] [Indexed: 11/30/2022]
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139
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Menezes-Silva R, de Oliveira BMB, Fernandes PHM, Shimohara LY, Pereira FV, Borges AFS, Buzalaf MAR, Pascotto RC, Sidhu SK, de Lima Navarro MF. Effects of the reinforced cellulose nanocrystals on glass-ionomer cements. Dent Mater 2019; 35:564-573. [PMID: 30711272 DOI: 10.1016/j.dental.2019.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 12/31/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Glass-ionomer cements (GICs) modified with cellulose nanocrystals (CNs) were characterized and evaluated for compressive strength (CS), diametral tensile strength (DTS) and fluoride release (F-). METHODS Commercially available GICs (Maxxion, Vidrion R, Vitro Molar, Ketac Molar Easy Mix and Fuji Gold Label 9) were reinforced with CNs (0.2% by weight). The microstructure of CNs and of CN-modified GICs were evaluated by transmission electron microscopy (TEM) and by scanning electron microscopy (SEM) while chemical characterization was by Fourier transform infrared spectroscopy (FTIR). Ten specimens each of the unmodified (control) and CN-modified materials (test materials) were prepared for CS and DTS testing. For the fluoride release evaluation, separate specimens (n=10) of each test and control material were made. The results obtained were submitted to the t-test (p<0.05). RESULTS The CN reinforcement significantly improved the mechanical properties and significantly increased the F- release of all GICs (p<0.05). The GICs with CNs showed a fibrillar aggregate of nanoparticles interspersed in the matrix. The compounds with CNs showed a higher amount of C compared to the controls due to the organic nature of the CNs. It was not possible to identify by FTIR any chemical bond difference in the compounds formed when nanofibers were inserted in the GICs. SIGNIFICANCE Modification of GICs with CNs appears to produce promising restorative materials.
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Affiliation(s)
- Rafael Menezes-Silva
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil.
| | | | - Paulo Henrique Martins Fernandes
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Lívia Yukari Shimohara
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Fabiano Vargas Pereira
- Department of Chemistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil
| | - Ana Flávia Sanches Borges
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Marília Afonso Rabelo Buzalaf
- Department of Biological Sciences, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Renata Corrêa Pascotto
- Department of Dentistry, State University of Maringa, Av. Mandacaru, 1550, 87080-000, Maringá, PR, Brazil
| | - Sharanbir K Sidhu
- Institute of Dentistry, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
| | - Maria Fidela de Lima Navarro
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
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140
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Berto GL, Arantes V. Kinetic changes in cellulose properties during defibrillation into microfibrillated cellulose and cellulose nanofibrils by ultra-refining. Int J Biol Macromol 2019; 127:637-648. [PMID: 30708005 DOI: 10.1016/j.ijbiomac.2019.01.169] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/28/2019] [Accepted: 01/28/2019] [Indexed: 10/27/2022]
Abstract
Defibrillation of cellulose fibers can lead to the isolation of microfibrillated cellulose (MFC) or cellulose nanofibrils (CNF) with intrinsic properties suitable for various applications. However, to what extent these properties are preserved, enhanced, gained or lowered during defibrillation and how they are related remains unclear. In this study, a kinetic study of the ultra-refining of bleached eucalyptus Kraft pulp (BEKP) in a disc ultra-refiner was performed and characterized in terms of physical-structural, morphological and thermal properties and their interactions and compromises. Defibrillation of BEKP to MFC substantially decreased the fiber diameter and increased viscosity, surface area and morphological heterogeneity. It also led to a remarkable increase in transparency and essentially did not alter the thermostability but significantly degraded the crystallinity. A higher degree of defibrillation to isolate CNF led to fibers with smaller diameter and increased diameter uniformity but required a substantial amount of energy to only marginally increase viscosity and transparency. Crystallinity and thermostability were not altered, comparing with CMF. In conclusion, most changes occurred during the defibrillation of BEKP to CMF. Further defibrillation to CNFs with smaller diameters and better uniformity did not significantly reflect on other important structural cellulose physical properties, despite the much higher energy consumption and degree of defibrillation.
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Affiliation(s)
- Gabriela L Berto
- Biocatalysis and Bioproducts Laboratory, Department of Biotechnology - Lorena School of Engineering, University of São Paulo, Lorena, SP 12602-810, Brazil.
| | - Valdeir Arantes
- Biocatalysis and Bioproducts Laboratory, Department of Biotechnology - Lorena School of Engineering, University of São Paulo, Lorena, SP 12602-810, Brazil.
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141
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142
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Preparation and Characterization of Bacterial Cellulose-Carbon Dot Hybrid Nanopaper for Potential Sensing Applications. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app9010107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Green and facile approaches aiming at the manufacture of biocompatible paper-based optical sensors reporting the presence of photoluminescence (PL) modulating compounds is an emerging field of research. This study investigates the preparation of bacterial cellulose nanopaper containing covalently immobilized carbon dots for potential biosensing applications. Preliminary work of this feasibility study included TEMPO-mediated ((2,2,6,6-tetramethylpiperidin-1-yl)oxyl-mediated) oxidation and nanofibrillation of bacterial cellulose (TOBC) on the one hand as well as synthesis and comparative analysis of different types of carbon dots (CDs) on the other hand. The two source materials of the targeted functional nanopaper were finally linked to each other by two different N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride/ N-hydroxysuccinimide (EDC/NHS) coupling approaches to clarify whether grafting of CDs prior to or after TOBC paper formation would be the method of choice. Synthesis of the carbon nanodots was accomplished by microwave-assisted co-hydrothermolysis of appropriate precursor compounds. After isolation and purification by dialysis particles in the single-digit nanometer-range were obtained and characterized with regard to their photoluminescence properties in terms of emission wavelength, pH stability, and quantum yield. All types of synthesized CDs reached their PL maxima (450–480 nm; light blue) in a narrow excitation wavelength range of 340–360 nm. Variation of molar (C/N) ratio of the CD precursors and substitution of the nitrogen donor EDEA by urea increased PL and quantum yield (QY), respectively. The highest relative QY of nearly 32% was obtained for CDs synthesized from citric acid and urea. PL of all CDs was virtually insensitive to pH changes in the range of 4–10. Tensile testing of hybrid nanopaper prepared after EDC/NHS-mediated grafting of GEA-type CDs onto TOBC (0.52 mmol·g−1 COOH) in dispersion state revealed that both stiffness and strength are not compromised by incorporation of carbon dots, while plastic deformation and elongation at break increased slightly compared to nanopaper formed prior to decoration with CDs. Water contact angle of the nanopaper is unaffected by introduction of carbon dots which is supposedly due to the presence of surface amino- and amide groups compensating for the loss of carboxyl groups by grafting.
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Liu S, Liang H, Sun T, Yang D, Cao M. A recoverable dendritic polyamidoamine immobilized TEMPO for efficient catalytic oxidation of cellulose. Carbohydr Polym 2018; 202:563-570. [PMID: 30287037 DOI: 10.1016/j.carbpol.2018.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 11/27/2022]
Abstract
Polyamidoamine (PAMAM) dendrimers of G1.0 and 2.0 were synthesized by the repeated Michael addition and ester aminolysis of ethylenediamine and methyl acrylate. Through the reductive amination reaction of primary amines in PAMAM and carbonyl groups in 4-oxo-2,2,6,6-tetramethylpiperidine-1-oxyl (4-oxo-TEMPO), the water-soluble PAMAM immobilized TEMPO (PAMAM-TEMPO) was successfully prepared. The obtained PAMAM-TEMPO was characterized by Fourier transform infrared spectroscopy (FT-IR) and ultraviolet-visible spectrophotometer (UV-vis). PAMAM-TEMPO was used as catalyst instead of free TEMPO for selective catalytic oxidation of primary hydroxyl groups in cellulose with water as reaction medium. The results showed that the catalytic performance of G1.0 PAMAM-TEMPO with 28.8% TEMPO loading was equivalent to free TEMPO. After salting out the supernatant of oxidation mixture, PAMAM-TEMPO was recovered by extraction with N,N-dimethylformamide and reused for further oxidation cycles. No significant reduction in catalytic performance was found after 4 oxidation cycles. The recovery of PAMAM-TEMPO after each cycle was about 90%. By sonication of oxidized cellulose obtained with G1.0 PAMAM-TEMPO as catalyst, the individualized cellulose nanofibers with approximately 10 nm in diameter were successfully prepared. This is the first report on the use of immobilized TEMPO catalysts comparable to the performance of free TEMPO to oxidize cellulose in water.
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Affiliation(s)
- Shaojie Liu
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, PR China.
| | - Huazhe Liang
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, PR China
| | - Tingting Sun
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, PR China
| | - Desheng Yang
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, PR China
| | - Meng Cao
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, PR China
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144
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Arola S, Ansari M, Oksanen A, Retulainen E, Hatzikiriakos SG, Brumer H. The sol-gel transition of ultra-low solid content TEMPO-cellulose nanofibril/mixed-linkage β-glucan bionanocomposite gels. SOFT MATTER 2018; 14:9393-9401. [PMID: 30420978 DOI: 10.1039/c8sm01878b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present the preparation, morphological analysis, and rheological characterization of ultra-low solid content gels prepared by physically cross-linking TEMPO-oxidized cellulose nanofibrils (TEMPO-CNF) with the soluble plant-cell-wall polysaccharide, mixed-linkage β-glucan (MLG). Of particular note, gel formation was rapidly induced by very small amounts of MLG (e.g. 0.125% w/v) at extremely low TEMPO-CNF concentration (0.05% w/v), which independently were otherwise fluid and thus easily handled. Rheology of these bionanocomposite gel systems as a function of MLG and TEMPO-CNF concentrations revealed that the critical gel concentration of MLG and TEMPO-CNF followed a power-law relation of the concentration of the other component. Surprisingly, these systems also exhibited an additional transition to thick gels at high TEMPO-CNF and MLG concentrations that was visible only at low frequencies. Cryogenic scanning electron microscopy (cryo-SEM) imaging of admixture solutions and gels revealed increased network crowding with increasing MLG amounts. The data are consistent with the hypothesis that non-covalent cellulose-MLG interactions, analogous to those occurring within plant cell walls, drive gel formation. The ability to tune gel physical properties simply by controlling CNF (a promising forest bioproduct) and MLG (a readily available agricultural polysaccharide) fractions at very low solid and polymer content opens new possibilities for material applications in diverse industries.
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Affiliation(s)
- Suvi Arola
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, BC V6T 1Z4, Canada.
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145
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Zhang H, Sun X, Heng Z, Chen Y, Zou H, Liang M. Robust and Flexible Cellulose Nanofiber/Multiwalled Carbon Nanotube Film for High-Performance Electromagnetic Interference Shielding. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04573] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Haoruo Zhang
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Xunwen Sun
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Zhengguang Heng
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Yang Chen
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Huawei Zou
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Mei Liang
- The State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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146
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Thomas B, Raj MC, B AK, H RM, Joy J, Moores A, Drisko GL, Sanchez C. Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications. Chem Rev 2018; 118:11575-11625. [PMID: 30403346 DOI: 10.1021/acs.chemrev.7b00627] [Citation(s) in RCA: 564] [Impact Index Per Article: 94.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
With increasing environmental and ecological concerns due to the use of petroleum-based chemicals and products, the synthesis of fine chemicals and functional materials from natural resources is of great public value. Nanocellulose may prove to be one of the most promising green materials of modern times due to its intrinsic properties, renewability, and abundance. In this review, we present nanocellulose-based materials from sourcing, synthesis, and surface modification of nanocellulose, to materials formation and applications. Nanocellulose can be sourced from biomass, plants, or bacteria, relying on fairly simple, scalable, and efficient isolation techniques. Mechanical, chemical, and enzymatic treatments, or a combination of these, can be used to extract nanocellulose from natural sources. The properties of nanocellulose are dependent on the source, the isolation technique, and potential subsequent surface transformations. Nanocellulose surface modification techniques are typically used to introduce either charged or hydrophobic moieties, and include amidation, esterification, etherification, silylation, polymerization, urethanization, sulfonation, and phosphorylation. Nanocellulose has excellent strength, high Young's modulus, biocompatibility, and tunable self-assembly, thixotropic, and photonic properties, which are essential for the applications of this material. Nanocellulose participates in the fabrication of a large range of nanomaterials and nanocomposites, including those based on polymers, metals, metal oxides, and carbon. In particular, nanocellulose complements organic-based materials, where it imparts its mechanical properties to the composite. Nanocellulose is a promising material whenever material strength, flexibility, and/or specific nanostructuration are required. Applications include functional paper, optoelectronics, and antibacterial coatings, packaging, mechanically reinforced polymer composites, tissue scaffolds, drug delivery, biosensors, energy storage, catalysis, environmental remediation, and electrochemically controlled separation. Phosphorylated nanocellulose is a particularly interesting material, spanning a surprising set of applications in various dimensions including bone scaffolds, adsorbents, and flame retardants and as a support for the heterogenization of homogeneous catalysts.
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Affiliation(s)
- Bejoy Thomas
- Department of Chemistry , Newman College, Thodupuzha , 685 585 Thodupuzha , Kerala , India
| | - Midhun C Raj
- Department of Chemistry , Newman College, Thodupuzha , 685 585 Thodupuzha , Kerala , India
| | - Athira K B
- Department of Chemistry , Newman College, Thodupuzha , 685 585 Thodupuzha , Kerala , India
| | - Rubiyah M H
- Department of Chemistry , Newman College, Thodupuzha , 685 585 Thodupuzha , Kerala , India
| | - Jithin Joy
- Department of Chemistry , Newman College, Thodupuzha , 685 585 Thodupuzha , Kerala , India.,International and Interuniversity Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University , 686 560 Kottayam , Kerala , India
| | - Audrey Moores
- Centre in Green Chemistry and Catalysis, Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| | - Glenna L Drisko
- CNRS, ICMCB, Université de Bordeaux, UMR 5026 , F-33600 Pessac , France
| | - Clément Sanchez
- UPMC Université Paris 06, CNRS, UMR 7574 Laboratoire Chimie de la Matière Condensée de Paris, Collège de France , 11 place, Marcelin Berthelot , F-75005 , Paris , France
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147
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Isogai A, Hänninen T, Fujisawa S, Saito T. Review: Catalytic oxidation of cellulose with nitroxyl radicals under aqueous conditions. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.007] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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148
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Ling S, Chen W, Fan Y, Zheng K, Jin K, Yu H, Buehler MJ, Kaplan DL. Biopolymer nanofibrils: structure, modeling, preparation, and applications. Prog Polym Sci 2018; 85:1-56. [PMID: 31915410 PMCID: PMC6948189 DOI: 10.1016/j.progpolymsci.2018.06.004] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biopolymer nanofibrils exhibit exceptional mechanical properties with a unique combination of strength and toughness, while also presenting biological functions that interact with the surrounding environment. These features of biopolymer nanofibrils profit from their hierarchical structures that spun angstrom to hundreds of nanometer scales. To maintain these unique structural features and to directly utilize these natural supramolecular assemblies, a variety of new methods have been developed to produce biopolymer nanofibrils. In particular, cellulose nanofibrils (CNFs), chitin nanofibrils (ChNFs), silk nanofibrils (SNFs) and collagen nanofibrils (CoNFs), as the four most abundant biopolymer nanofibrils on earth, have been the focus of research in recent years due to their renewable features, wide availability, low-cost, biocompatibility, and biodegradability. A series of top-down and bottom-up strategies have been accessed to exfoliate and regenerate these nanofibrils for versatile advanced applications. In this review, we first summarize the structures of biopolymer nanofibrils in nature and outline their related computational models with the aim of disclosing fundamental structure-property relationships in biological materials. Then, we discuss the underlying methods used for the preparation of CNFs, ChNFs, SNF and CoNFs, and discuss emerging applications for these biopolymer nanofibrils.
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Affiliation(s)
- Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Wenshuai Chen
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Yimin Fan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Ke Zheng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Kai Jin
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Haipeng Yu
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Markus J. Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
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149
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Wang Z, Qiao X, Sun K. Rice straw cellulose nanofibrils reinforced poly(vinyl alcohol) composite films. Carbohydr Polym 2018; 197:442-450. [DOI: 10.1016/j.carbpol.2018.06.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/19/2018] [Accepted: 06/05/2018] [Indexed: 10/14/2022]
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150
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Sobhanadhas L, Kesavan L, Fardim P. Topochemical Engineering of Cellulose-Based Functional Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9857-9878. [PMID: 29694048 PMCID: PMC6151662 DOI: 10.1021/acs.langmuir.7b04379] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Topochemical engineering is a method of designing the fractionation (disassembly) and fabrication (assembly) of highly engineered functional materials using a combination of molecular and supramolecular techniques. Cellulose is one of the naturally occurring biopolymers, currently considered to be an important raw material for the design and development of sustainable products and processes. This feature article deals with new insights into how cellulose can be processed and functionalized using topochemical engineering in order to create functional fibers, enhance biopolymer dissolution in water-based solvents, and control the shaping of porous materials. Subsequently, topochemical engineering of cellulose offers a variety of morphological structures such as highly engineered fibers, functional cellulose beads, and reactive powders that find relevant applications in pulp bleaching, enzyme and antimicrobial drug carriers, ion exchange resins, photoluminescent materials, waterproof materials, fluorescent materials, flame retardants, and template materials for inorganic synthesis. The topochemical engineering of biopolymers and biohybrids is an exciting and emerging area of research that can boost the design of new bioproducts with novel functionalities and technological advancements for biobased industries.
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Affiliation(s)
- LijiSobhana
S. Sobhanadhas
- Laboratory
of Fibre and Cellulose Technology, Åbo
Akademi University, Porthansgatan 3, FI-20500, Åbo, Finland
| | - Lokesh Kesavan
- Laboratory
of Fibre and Cellulose Technology, Åbo
Akademi University, Porthansgatan 3, FI-20500, Åbo, Finland
| | - Pedro Fardim
- Laboratory
of Fibre and Cellulose Technology, Åbo
Akademi University, Porthansgatan 3, FI-20500, Åbo, Finland
- Department
of Chemical Engineering, KU Leuven, Celestijnenlaan 200F bus 2424, B-3001 Leuven, Belgium
- E-mail:
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