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Zhang F, Shen R, Li N, Yang X, Lin D. Nanocellulose: An amazing nanomaterial with diverse applications in food science. Carbohydr Polym 2023; 304:120497. [PMID: 36641166 DOI: 10.1016/j.carbpol.2022.120497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/16/2022] [Accepted: 12/20/2022] [Indexed: 12/27/2022]
Abstract
Recently, nanocellulose has gained growing interests in food science due to its many advantages including its broad resource of raw materials, renewability, interface stability, high surface area, mechanical strength, prebiotic characteristics, surface chemistry versatility and easy modification. Since then, this review summarized the sources, morphology, and structure characteristics of nanocellulose. Meanwhile, the mechanical, chemical, and combined treatment methods for the preparation of nanocellulose with desired properties were elaborated. Furthermore, the application of nanocellulose in Pickering emulsions, reinforced food packaging, functional food ingredient, food-grade hydrogels, and biosensors were emphasized. Finally, the safety, challenges, and future perspectives of nanocellulose were discussed. This work provided key developments and effective benefits of nanocellulose for future research opportunities in food.
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Affiliation(s)
- Fengrui Zhang
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Rui Shen
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Nan Li
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Xingbin Yang
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Dehui Lin
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China.
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2
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Ji S, Park C, Lee YB, Kim SK, An KS, Lee SS. Sorption of hazardous industrial organic liquids with environmentally friendly functionalized cellulosic sorbents. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2022-0168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
The performances of five cellulosic polymers with different functional groups (cellulose, cellulose acetate, cellulose phosphate, chitosan, and chitin) as sorbents of seven frequently used hazardous polar organic liquids (acrolein, butanone peroxide, epichlorohydrin, formaldehyde, furfuryl alcohol, propylene oxide, and vinyl acetate) are investigated in this study. Amongst the cellulosic sorbents, cellulose phosphate exhibited enhanced sorption properties (as high as 3.09–7.03 g/g) against all seven polar organic liquids investigated, and chitosan and chitin also demonstrated comparable sorption efficiencies (2.28–7.72 g/g and 2.55–5.86 g/g, respectively) to those of cellulose phosphate. According to our investigation, the enhanced sorption efficiency could be achieved due to low powder density of cellulose phosphate, which is caused by the weak intramolecular interaction amongst the polymer chains. In addition, cellulose phosphate, chitosan, and chitin also showed enhanced absorbed solvent recovery percents (71.4, 60.6, and 61.1%, respectively, in average) compared with that of pristine cellulose (43.8%). With excellent sorption efficiency, enhanced solvent recovery rate, and reusability after drying, these functionalized cellulosic sorbents can be excellent candidates to replace the conventional carbon and vermiculites-based sorbents, especially for liquid polar organic spill sorption.
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Affiliation(s)
- Seulgi Ji
- Thin Film Materials Research Center , Korea Research Institute of Chemical Technology , Yuseong-gu , Daejeon 34114 , Republic of Korea
| | - Chanwon Park
- Department of Chemical Engineering , Hannam University , 1646 Yuseong-daero, Yuseong-gu , Daejeon , 34430 , Republic of Korea
| | - Young Bum Lee
- Thin Film Materials Research Center , Korea Research Institute of Chemical Technology , Yuseong-gu , Daejeon 34114 , Republic of Korea
| | - Seong K. Kim
- Department of Chemical Engineering , Hannam University , 1646 Yuseong-daero, Yuseong-gu , Daejeon , 34430 , Republic of Korea
| | - Ki-Seok An
- Thin Film Materials Research Center , Korea Research Institute of Chemical Technology , Yuseong-gu , Daejeon 34114 , Republic of Korea
| | - Sun Sook Lee
- Thin Film Materials Research Center , Korea Research Institute of Chemical Technology , Yuseong-gu , Daejeon 34114 , Republic of Korea
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3
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Zhang Q, Pei X, Hu K, Zhou Y, Ma ML, Wang M, An H, Tan Y. Facile Fabrication of Starch-Based Microrods by Shear-Assisted Antisolvent-Induced Nanoprecipitation and Solidification. ACS Macro Lett 2022; 11:1238-1244. [PMID: 36227225 DOI: 10.1021/acsmacrolett.2c00524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rod-like particles have attracted increasing attention because of their unique shape-dependent properties, which enable their superior performance compared to their isotropic counterparts. Thus, rod-like particles have potential applications in many fields, especially in biomedicine. However, the fabrication of uniform rod-like particles is challenging because of the principle of interfacial energy minimization. Herein, we present a facile, rapid, and cost-effective strategy for preparing starch-based microrods with tunable aspect ratios via shear-assisted antisolvent-induced nanoprecipitation and solidification. The preformed spherical particles swollen by the mixed solvent were elongated by the shear force and solidified in rod-like shape by antisolvent induction. The resulting starch-based microrods can encapsulate hydrophobic active substances and be modified with functional groups, indicating their potential applications as drug carriers and biologically active materials. The formation mechanism of the starch-based microrods discovered in this study provides a new perspective on the fabrication of rod-like polymer particles.
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Affiliation(s)
- Qimeng Zhang
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China.,School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Xiaopeng Pei
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Kepeng Hu
- Department of Coloproctology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Yating Zhou
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Ming-Liang Ma
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Mingquan Wang
- Hangzhou Kewan New Material Technology Co., Ltd., Hangzhou 311305, China
| | - Huiyong An
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Ying Tan
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
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4
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Voronova MI, Surov OV, Rubleva NV, Zakharov AG. Sol–Gel Synthesis of Porous Carbon Materials Using Nanocrystalline Cellulose as a Template. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622030159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Enzymatic Hydrolysis of Bacterial Cellulose for the Production of Nanocrystals for the Food Packaging Industry. NANOMATERIALS 2020; 10:nano10040735. [PMID: 32290503 PMCID: PMC7221805 DOI: 10.3390/nano10040735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/30/2020] [Accepted: 04/09/2020] [Indexed: 11/25/2022]
Abstract
Bacterial cellulose nanocrystals (BCNCs) obtained by enzymatic hydrolysis have been loaded in pullulan biopolymer for use as nanoparticles in the generation of high-oxygen barrier coatings intended for food packaging applications. Bacterial cellulose (BC) produced by Komagataeibacter sucrofermentans was hydrolyzed by two different enzymatic treatments, i.e., using endo-1,4-β-glucanases (EGs) from Thermobifida halotolerans and cellulase from Trichoderma reesei. The hydrolytic activity was compared by means of turbidity experiments over a period of 145 h, whereas BCNCs in their final state were compared, in terms of size and morphology, by atomic force microscopy (AFM) and dynamic light scattering (DLS). Though both treatments led to particles of similar size, a greater amount of nano-sized particles (≈250 nm) were observed in the system that also included cellulase enzymes. Unexpectedly, transmission electron microscopy (TEM) revealed that cellulose nanoparticles were round-shaped and made of 4–5 short (150–180 nm) piled whiskers. Pullulan/BCNCs nanocomposite coatings allowed an increase in the overall oxygen barrier performance, of more than two and one orders of magnitude (≈0.7 mL·m−2·24 h−1), of pure polyethylene terephthalate (PET) (≈120 mL·m−2·24 h−1) as well as pullulan/coated PET (≈6 mL·m−2·24 h−1), with no significant difference between treatments (hydrolysis mediated by EGs or with the addition of cellulase). BCNCs obtained by enzymatic hydrolysis have the potential to generate high oxygen barrier coatings for the food packaging industry.
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6
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Meninno S. Valorization of Waste: Sustainable Organocatalysts from Renewable Resources. CHEMSUSCHEM 2020; 13:439-468. [PMID: 31634413 DOI: 10.1002/cssc.201902500] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Indexed: 06/10/2023]
Abstract
One of the greatest challenges facing our society is to reconcile our need to develop efficient and sophisticated chemical processes with the limited resources of our planet and its restricted ability to adsorb pollution. Organocatalysis has allowed many issues to be addressed in the development of sophisticated, but less polluting, processes. However, minimizing waste also means an efficient utilization of raw and renewable materials. Waste biomass represents an alternative to conventional petroleum-based chemical manufacturing and is a highly attractive renewable resource for the production of chemicals and high-value-added organocatalysts. Recent achievements in the use of renewable biomass feedstocks for the synthesis of organocatalysts are presented. Their application in synthetic methodologies, including multicomponent reactions, which are performed under solvent-free conditions or in eco-friendly reaction media, as well as recycling and reusing the organocatalysts, is illustrated. A few pioneering examples that demonstrate the potential of these promoters in asymmetric synthesis have also been documented. In particular, this review covers examples on the use of hetero- and homogeneous organocatalysts derived from 1) waste biopolymers, such as chitosan, alginic acid, and cellulose; ii) renewable platform molecules, such as levoglucosenone, isosorbide, mannose, d-glucosamine, and lecithin; 3) terpenes and rosin, such as pinane, isosteviol, and abietic acid; and iv) natural proteins (gelatin, bovine tendons, silk fibroin proteins).
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia, University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
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7
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Interfacial Hydrolysis of Acetals on Protonated TEMPO-oxidized Cellulose Nanofibers. Sci Rep 2018; 8:5021. [PMID: 29568037 PMCID: PMC5864833 DOI: 10.1038/s41598-018-23381-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 03/12/2018] [Indexed: 01/16/2023] Open
Abstract
2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNs), which have a high-density of exposed carboxylic acid groups on their crystalline surfaces, effectively act as acid catalysts in acetal hydrolysis. Carboxy-free cellulose nanofibers, polymeric carboxylic acids, and homogeneous acetic acid do not show significant catalytic activity under the same reaction conditions. Mercerized TOCNs differing from the original TOCNs in a crystalline structure were also ineffective, which suggests that the unique nanoarchitectural features of TOCNs, such as regularly aligned carboxylic acid groups, large specific surface areas, and structural rigidity, must be major factors in the acceleration of acetal hydrolysis. Kinetic analysis suggested that substrates and/or acid catalyst species were concentrated on the TOCN crystalline surfaces, which significantly enhanced the catalytic activity.
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8
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Islam MS, Chen L, Sisler J, Tam KC. Cellulose nanocrystal (CNC)–inorganic hybrid systems: synthesis, properties and applications. J Mater Chem B 2018; 6:864-883. [DOI: 10.1039/c7tb03016a] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Cellulose nanocrystal (CNC), a class of sustainable nanomaterial derived from forest and agro-biomass can serve as nature's storage for carbon dioxide.
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Affiliation(s)
- M. S. Islam
- Department of Chemical Engineering
- Waterloo Institute for Nanotechnology
- University of Waterloo
- Waterloo
- Canada
| | - L. Chen
- Department of Chemical Engineering
- Waterloo Institute for Nanotechnology
- University of Waterloo
- Waterloo
- Canada
| | - J. Sisler
- Department of Chemical Engineering
- Waterloo Institute for Nanotechnology
- University of Waterloo
- Waterloo
- Canada
| | - K. C. Tam
- Department of Chemical Engineering
- Waterloo Institute for Nanotechnology
- University of Waterloo
- Waterloo
- Canada
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9
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Xue Y, Mou Z, Xiao H. Nanocellulose as a sustainable biomass material: structure, properties, present status and future prospects in biomedical applications. NANOSCALE 2017; 9:14758-14781. [PMID: 28967940 DOI: 10.1039/c7nr04994c] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanocellulose, extracted from the most abundant biomass material cellulose, has proved to be an environmentally friendly material with excellent mechanical performance owing to its unique nano-scaled structure, and has been used in a variety of applications as engineering and functional materials. The great biocompatibility and biodegradability, in particular, render nanocellulose promising in biomedical applications. In this review, the structure, treatment technology and properties of three different nanocellulose categories, i.e., nanofibrillated cellulose (NFC), nanocrystalline cellulose (NCC) and bacterial nanocellulose (BNC), are introduced and compared. The cytotoxicity, biocompatibility and frontier applications in biomedicine of the three nanocellulose categories were the focus and are detailed in each section. Future prospects concerning the cytotoxicity, applications and industrial production of nanocellulose are also discussed in the last section.
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Affiliation(s)
- Yan Xue
- School of Chemistry and Chemical Engineering, Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500, China.
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10
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Liu S, Jin M, Chen Y, Gao H, Shi X, Cheng W, Ren L, Wang Y. High internal phase emulsions stabilised by supramolecular cellulose nanocrystals and their application as cell-adhesive macroporous hydrogel monoliths. J Mater Chem B 2017; 5:2671-2678. [PMID: 32264046 DOI: 10.1039/c7tb00145b] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nanosized celluloses are attractive building blocks to generate hierarchically advanced materials and have been gradually explored in emulsion applications. Here we report a high internal phase emulsion (HIPE) prepared by using supramolecular cellulose nanocrystals (CNCs) as Pickering stabilisers via one-step emulsification, and interconnected macroporous hybrid hydrogels were produced by utilizing this HIPE as a template. A quadruple hydrogen bonding moiety 2-ureido-4[1H]-pyrimidone (UPy) was firstly grafted onto the surface of cellulose nanocrystals through simple free radical polymerization. The polymer grafting was confirmed by elemental analysis and thermogravimetry. The UPy modified CNCs (CNC-UPy) exhibited superior emulsion stabilising ability compared to the pristine CNCs, and the oil-in-water emulsions with an internal phase volume ratio of 80% showed good long-term stability. The properties of resulting macroporous polyHIPE hydrogels, such as swelling behaviours, porous structures and mechanical strength, were investigated on the dependence of CNC-UPy concentrations. In addition, the macroporous hybrid hydrogel exhibits excellent cytocompatibility and cell adhesion as demonstrated by mouse bone mesenchymal stem cell (mBMSC) culture. With these promising properties, the developed hydrogels demonstrate great potential as active biological scaffolds for tissue engineering.
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Affiliation(s)
- Sa Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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11
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Voronova MI, Surov OV, Kraev AS, Isaeva DA, Mityukhina IS, Zakharov AG. Template synthesis of mesoporous silicas with the use of nanocrystalline cellulose. COLLOID JOURNAL 2017. [DOI: 10.1134/s1061933x17010148] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Combined effect of cellulose nanocrystal and reduced graphene oxide into poly-lactic acid matrix nanocomposite as a scaffold and its anti-bacterial activity. Int J Biol Macromol 2017; 95:94-105. [DOI: 10.1016/j.ijbiomac.2016.11.041] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 11/08/2016] [Accepted: 11/09/2016] [Indexed: 11/23/2022]
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13
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Barbash VA, Yaschenko OV, Alushkin SV, Kondratyuk AS, Posudievsky OY, Koshechko VG. The Effect of Mechanochemical Treatment of the Cellulose on Characteristics of Nanocellulose Films. NANOSCALE RESEARCH LETTERS 2016; 11:410. [PMID: 27644236 PMCID: PMC5028372 DOI: 10.1186/s11671-016-1632-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 09/12/2016] [Indexed: 05/08/2023]
Abstract
The development of the nanomaterials with the advanced functional characteristics is a challenging task because of the growing demand in the market of the optoelectronic devices, biodegradable plastics, and materials for energy saving and energy storage. Nanocellulose is comprised of the nanosized cellulose particles, properties of which depend on characteristics of plant raw materials as well as methods of nanocellulose preparation. In this study, the effect of the mechanochemical treatment of bleached softwood sulfate pulp on the optical and mechanical properties of nanocellulose films was assessed. It was established that the method of the subsequent grinding, acid hydrolysis and ultrasound treatment of cellulose generated films with the significant transparency in the visible spectral range (up to 78 % at 600 nm), high Young's modulus (up to 8.8 GPa), and tensile strength (up to 88 MPa) with increased ordering of the packing of the cellulose macromolecules. Morphological characterization was done using the dynamic light scattering (DLS) analyzer and transmission electron microscopy (TEM). The nanocellulose particles had an average diameter of 15-30 nm and a high aspect ratio in the range 120-150. The crystallinity was increased with successive treatments as shown by the X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analysis. The thermal degradation behavior of cellulose samples was explored by thermal gravimetric analysis (TGA).
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Affiliation(s)
- V. A. Barbash
- National Technical University of Ukraine “Kyiv Polytechnic Institute”, Prospect Peremogy 37, Kyiv, 03056 Ukraine
| | - O. V. Yaschenko
- National Technical University of Ukraine “Kyiv Polytechnic Institute”, Prospect Peremogy 37, Kyiv, 03056 Ukraine
| | - S. V. Alushkin
- National Technical University of Ukraine “Kyiv Polytechnic Institute”, Prospect Peremogy 37, Kyiv, 03056 Ukraine
| | - A. S. Kondratyuk
- L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospect Nauki 31, Kyiv, 03028 Ukraine
| | - O. Y. Posudievsky
- L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospect Nauki 31, Kyiv, 03028 Ukraine
| | - V. G. Koshechko
- L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospect Nauki 31, Kyiv, 03028 Ukraine
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14
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Lyubimova O, Stoyanov SR, Gusarov S, Kovalenko A. Electric Interfacial Layer of Modified Cellulose Nanocrystals in Aqueous Electrolyte Solution: Predictions by the Molecular Theory of Solvation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7106-7116. [PMID: 26053228 DOI: 10.1021/acs.langmuir.5b00680] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The X-ray crystal structure-based models of Iα cellulose nanocrystals (CNC), both pristine and containing surface sulfate groups with negative charge 0-0.34 e/nm(2) produced by sulfuric acid hydrolysis of softwood pulp, feature a highly polarized "crystal-like" charge distribution. We perform sampling using molecular dynamics (MD) of the structural relaxation of neutral pristine and negatively charged sulfated CNC of various lengths in explicit water solvent and then employ the statistical mechanical 3D-RISM-KH molecular theory of solvation to evaluate the solvation structure and thermodynamics of the relaxed CNC in ambient aqueous NaCl solution at a concentration of 0.0-0.25 mol/kg. The MD sampling induces a right-hand twist in CNC and rearranges its initially ordered structure with a macrodipole of high-density charges at the opposite faces into small local spots of alternating charge at each face. This surface charge rearrangement observed for both neutral and charged CNC significantly affects the distribution of ions around CNC in aqueous electrolyte solution. The solvation free energy (SFE) of charged sulfated CNC has a minimum at a particular electrolyte concentration depending on the surface charge density, whereas the SFE of neutral CNC increases linearly with NaCl concentration. The SFE contribution from Na(+) counterions exhibits behavior similar to the NaCl concentration dependence of the whole SFE. An analysis of the 3D maps of Na(+) density distributions shows that these model CNC particles exhibit the behavior of charged nanocolloids in aqueous electrolyte solution: an increase in electrolyte concentration shrinks the electric interfacial layer and weakens the effective repulsion between charged CNC particles. The 3D-RISM-KH method readily treats solvent and electrolyte of a given nature and concentration to predict effective interactions between CNC particles in electrolyte solution. We provide CNC structural models and a modeling procedure for studies of effective interactions and the formation of ordered phases of CNC suspensions in electrolyte solution.
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Affiliation(s)
- Olga Lyubimova
- †National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
- ‡Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada
| | - Stanislav R Stoyanov
- †National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
- ‡Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada
- §Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada
| | - Sergey Gusarov
- †National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Andriy Kovalenko
- †National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
- ‡Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada
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15
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Kaushik M, Basu K, Benoit C, Cirtiu CM, Vali H, Moores A. Cellulose Nanocrystals as Chiral Inducers: Enantioselective Catalysis and Transmission Electron Microscopy 3D Characterization. J Am Chem Soc 2015; 137:6124-7. [PMID: 25915443 DOI: 10.1021/jacs.5b02034] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cellulose nanocrystals (CNCs), derived from cellulose, provide us with an opportunity to devise more sustainable solutions to current technological challenges. Enantioselective catalysis, especially heterogeneous, is the preferred method for the synthesis of pure chiral molecules in the fine chemical industries. Cellulose has been long sought as a chiral inducer in enantioselective catalysis. We report herein an unprecedentedly high enantiomeric excess (ee) for Pd patches deposited onto CNCs used as catalysts for the hydrogenation of prochiral ketones in water at room temperature and 4 bar H2. Our system, where CNCs acted as support and sole chiral source, achieved an ee of 65% with 100% conversions. Cryo-electron microscopy, high-resolution transmission electron microscopy, and tomography were used for the first time to study the 3D structure of a metal functionalized CNC hybrid. It established the presence of sub-nanometer-thick Pd patches at the surface of CNCs and provided insight into the chiral induction mechanism.
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Affiliation(s)
- Madhu Kaushik
- †Centre for Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada
| | - Kaustuv Basu
- ‡Facility for Electron Microscopy Research, McGill University, 3640 University Street, Montréal, QC H3A 0C7, Canada
| | - Charles Benoit
- †Centre for Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada
| | - Ciprian M Cirtiu
- †Centre for Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada.,∥Direction santé environnement et toxicologie, Institut National de Santé Publique du Québec, 945, avenue Wolfe, 4e étage Sainte-Foy, Quebec, QC G1V 5B3, Canada
| | - Hojatollah Vali
- ‡Facility for Electron Microscopy Research, McGill University, 3640 University Street, Montréal, QC H3A 0C7, Canada.,§Anatomy and Cell Biology, McGill University, 3640 University Street, Montréal, QC H3A 0C7, Canada
| | - Audrey Moores
- †Centre for Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada
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16
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Zhang Y, Li Q, Su J, Lin Y, Huang Z, Lu Y, Sun G, Yang M, Huang A, Hu H, Zhu Y. A green and efficient technology for the degradation of cellulosic materials: structure changes and enhanced enzymatic hydrolysis of natural cellulose pretreated by synergistic interaction of mechanical activation and metal salt. BIORESOURCE TECHNOLOGY 2015; 177:176-81. [PMID: 25490099 DOI: 10.1016/j.biortech.2014.11.085] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/21/2014] [Accepted: 11/22/2014] [Indexed: 05/08/2023]
Abstract
A new technology for the pretreatment of natural cellulose was developed, which combined mechanical activation (MA) and metal salt treatments in a stirring ball mill. Different valent metal nitrates were used to investigate the changes in degree of polymerization (DP) and crystallinity index (CrI) of cellulose after MA+metal salt (MAMS) pretreatment, and Al(NO3)3 showed better pretreatment effect than NaNO3 and Zn(NO3)2. The destruction of morphological structure of cellulose was mainly resulted from intense ball milling, and the comparative studies on the changes of DP and crystal structure of MA and MA+Al(NO3)3 pretreated cellulose samples showed a synergistic interaction of MA and Al(NO3)3 treatments with more effective changes of structural characteristics of MA+Al(NO3)3 pretreated cellulose and substantial increase of reducing sugar yield in enzymatic hydrolysis of cellulose. In addition, the results indicated that the presence of Al(NO3)3 had significant enhancement for the enzymatic hydrolysis of cellulose.
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Affiliation(s)
- Yanjuan Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; Guangxi Research Institute of Chemical Industry, Nanning 530001, China
| | - Qian Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Jianmei Su
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Ye Lin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Zuqiang Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
| | - Yinghua Lu
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guosong Sun
- Guangxi Research Institute of Chemical Industry, Nanning 530001, China
| | - Mei Yang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Aimin Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Huayu Hu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yuanqin Zhu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
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17
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Gao Z, Ma M, Zhai X, Zhang M, Zang D, Wang C. Improvement of chemical stability and durability of superhydrophobic wood surface via a film of TiO2coated CaCO3micro-/nano-composite particles. RSC Adv 2015. [DOI: 10.1039/c5ra04000k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Images of water droplets on (a) pristine wood, (b) wood covered with composite particles, (c) wood modified with stearic acid, and (d) superhydrophobic wood.
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Affiliation(s)
- Zhengxin Gao
- Key Laboratory of Bio-Based Material Science and Technology
- Ministry of Education
- Northeast Forestry University
- Harbin 150040
- China
| | - Miaolian Ma
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Xianglin Zhai
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Ming Zhang
- Key Laboratory of Bio-Based Material Science and Technology
- Ministry of Education
- Northeast Forestry University
- Harbin 150040
- China
| | - Deli Zang
- Key Laboratory of Bio-Based Material Science and Technology
- Ministry of Education
- Northeast Forestry University
- Harbin 150040
- China
| | - Chengyu Wang
- Key Laboratory of Bio-Based Material Science and Technology
- Ministry of Education
- Northeast Forestry University
- Harbin 150040
- China
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18
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Yang D, Peng X, Zhong L, Cao X, Chen W, Wang S, Liu C, Sun R. Fabrication of a highly elastic nanocomposite hydrogel by surface modification of cellulose nanocrystals. RSC Adv 2015. [DOI: 10.1039/c4ra10748a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A new and efficient strategy was first employed to fabricate highly elastic nanocomposite hydrogels by surface modification of cellulose nanocrystals.
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Affiliation(s)
- Dong Yang
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Xinwen Peng
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Linxin Zhong
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Xuefei Cao
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Wei Chen
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Sha Wang
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Chuanfu Liu
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Runcang Sun
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- P. R. China
- Beijing Key Laboratory of Lignocellulosic Chemistry
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19
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Costa SS, Druzian JI, Machado BAS, de Souza CO, Guimarães AG. Bi-functional biobased packing of the cassava starch, glycerol, licuri nanocellulose and red propolis. PLoS One 2014; 9:e112554. [PMID: 25383783 PMCID: PMC4226550 DOI: 10.1371/journal.pone.0112554] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/07/2014] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to characterize and determine the bi-functional efficacy of active packaging films produced with starch (4%) and glycerol (1.0%), reinforced with cellulose nanocrystals (0–1%) and activated with alcoholic extracts of red propolis (0.4 to 1.0%). The cellulose nanocrystals used in this study were extracted from licuri leaves. The films were characterized using moisture, water-activity analyses and water vapor-permeability tests and were tested regarding their total phenolic compounds and mechanical properties. The antimicrobial and antioxidant efficacy of the films were evaluated by monitoring the use of the active films for packaging cheese curds and butter, respectively. The cellulose nanocrystals increased the mechanical strength of the films and reduced the water permeability and water activity. The active film had an antimicrobial effect on coagulase-positive staphylococci in cheese curds and reduced the oxidation of butter during storage.
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Affiliation(s)
- Samantha Serra Costa
- Faculty of Pharmacy, Federal University of Bahia, Rua Barão de Geremoabo, s/n, Ondina, CEP 40171-970, Salvador, Bahia, Brasil
- * E-mail:
| | - Janice Izabel Druzian
- Faculty of Pharmacy, Department of Bromatological Analysis, Federal University of Bahia, Rua Barão de Geremoabo, s/n, Ondina, CEP 40171-970, Salvador, Bahia, Brasil
| | - Bruna Aparecida Souza Machado
- Faculty of Technology, SENAI/CIMATEC, Serviço Nacional de Aprendizagem Industrial - SENAI, Av. Orlando Gomes, n° 1845, Piatã, CEP 41650-010, Salvador, Bahia, Brasil
| | - Carolina Oliveira de Souza
- Faculty of Pharmacy, Department of Bromatological Analysis, Federal University of Bahia, Rua Barão de Geremoabo, s/n, Ondina, CEP 40171-970, Salvador, Bahia, Brasil
| | - Alaíse Gil Guimarães
- Faculty of Pharmacy, Department of Bromatological Analysis, Federal University of Bahia, Rua Barão de Geremoabo, s/n, Ondina, CEP 40171-970, Salvador, Bahia, Brasil
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20
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Niu Q, Gao K, Wu W. Cellulose nanofibril based graft conjugated polymer films act as a chemosensor for nitroaromatic. Carbohydr Polym 2014; 110:47-52. [DOI: 10.1016/j.carbpol.2014.03.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 01/25/2014] [Accepted: 03/02/2014] [Indexed: 11/26/2022]
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21
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Kovalenko A. Predictive Multiscale Modeling of Nanocellulose Based Materials and Systems. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1757-899x/64/1/012040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Domingues RMA, Gomes ME, Reis RL. The Potential of Cellulose Nanocrystals in Tissue Engineering Strategies. Biomacromolecules 2014; 15:2327-46. [DOI: 10.1021/bm500524s] [Citation(s) in RCA: 353] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rui M. A. Domingues
- 3B’s Research Group
- Biomaterials, Biodegradables and Biomimetics, Department of Polymer
Engineering, University of Minho, Headquarters of the European Institute
of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Indústrial da Gandra, 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuela E. Gomes
- 3B’s Research Group
- Biomaterials, Biodegradables and Biomimetics, Department of Polymer
Engineering, University of Minho, Headquarters of the European Institute
of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Indústrial da Gandra, 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L. Reis
- 3B’s Research Group
- Biomaterials, Biodegradables and Biomimetics, Department of Polymer
Engineering, University of Minho, Headquarters of the European Institute
of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Indústrial da Gandra, 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's—PT Government Associate Laboratory, Braga/Guimarães, Portugal
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23
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Kurukji D, Pichot R, Spyropoulos F, Norton I. Interfacial behaviour of sodium stearoyllactylate (SSL) as an oil-in-water pickering emulsion stabiliser. J Colloid Interface Sci 2013; 409:88-97. [DOI: 10.1016/j.jcis.2013.07.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/05/2013] [Accepted: 07/07/2013] [Indexed: 10/26/2022]
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24
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Niu Q, Gao K, Lin Z, Wu W. Surface molecular-imprinting engineering of novel cellulose nanofibril/conjugated polymer film sensors towards highly selective recognition and responsiveness of nitroaromatic vapors. Chem Commun (Camb) 2013; 49:9137-9. [PMID: 23986180 DOI: 10.1039/c3cc44705g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We designed and synthesized two conjugated polymer-grafted cellulose nanofibril film sensors via surface molecular-imprinting. These two surface TNT- or DNT-imprinted film sensors exhibit highly selective recognition and fast response towards target explosive vapor.
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Affiliation(s)
- Qingyuan Niu
- School of Materials science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
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25
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Cellulose nanofibers/reduced graphene oxide flexible transparent conductive paper. Carbohydr Polym 2013; 97:243-51. [DOI: 10.1016/j.carbpol.2013.03.067] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 02/27/2013] [Accepted: 03/24/2013] [Indexed: 11/23/2022]
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26
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Production of nanocrystalline cellulose from lignocellulosic biomass: technology and applications. Carbohydr Polym 2013; 94:154-69. [PMID: 23544524 DOI: 10.1016/j.carbpol.2013.01.033] [Citation(s) in RCA: 399] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 01/07/2013] [Accepted: 01/13/2013] [Indexed: 11/24/2022]
Abstract
The use of renewables materials for industrial applications is becoming impellent due to the increasing demand of alternatives to scarce and unrenewable petroleum supplies. In this regard, nanocrystalline cellulose, NCC, derived from cellulose, the most abundant biopolymer, is one of the most promising materials. NCC has unique features, interesting for the development of new materials: the abundance of the source cellulose, its renewability and environmentally benign nature, its mechanical properties and its nano-scaled dimensions open a wide range of possible properties to be discovered. One of the most promising uses of NCC is in polymer matrix nanocomposites, because it can provide a significant reinforcement. This review provides an overview on this emerging nanomaterial, focusing on extraction procedures, especially from lignocellulosic biomass, and on technological developments and applications of NCC-based materials. Challenges and future opportunities of NCC-based materials will be are discussed as well as obstacles remaining for their large use.
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27
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Mathapa BG, Paunov VN. Cyclodextrin stabilised emulsions and cyclodextrinosomes. Phys Chem Chem Phys 2013; 15:17903-14. [DOI: 10.1039/c3cp52116h] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Rueda L, Saralegui A, Fernández d'Arlas B, Zhou Q, Berglund LA, Corcuera MA, Mondragon I, Eceiza A. Cellulose nanocrystals/polyurethane nanocomposites. Study from the viewpoint of microphase separated structure. Carbohydr Polym 2012; 92:751-7. [PMID: 23218363 DOI: 10.1016/j.carbpol.2012.09.093] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 09/19/2012] [Accepted: 09/28/2012] [Indexed: 11/17/2022]
Abstract
Cellulose nanocrystals (CNC) successfully obtained from microcrystalline cellulose (MCC) were dispersed in a thermoplastic polyurethane as matrix. Nanocomposites containing 1.5, 5, 10 and 30 wt% CNC were prepared by solvent casting procedure and properties of the resulting films were evaluated from the viewpoint of polyurethane microphase separated structure, soft and hard domains. CNC were effectively dispersed in the segmented thermoplastic elastomeric polyurethane (STPUE) matrix due to the favorable matrix-nanocrystals interactions through hydrogen bonding. Cellulose nanocrystals interacted with both soft and hard segments, enhancing stiffness and stability versus temperature of the nanocomposites. Thermal and mechanical properties of STPUE/CNC nanocomposites have been associated to the generated morphologies investigated by AFM images.
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Affiliation(s)
- L Rueda
- Materials+Technologies Group, Department of Chemical and Environmental Engineering, Polytechnic School, University of Basque Country, Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
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29
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da Silva JBA, Pereira FV, Druzian JI. Cassava starch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals. J Food Sci 2012; 77:N14-9. [PMID: 22582979 DOI: 10.1111/j.1750-3841.2012.02710.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
UNLABELLED Bionanocomposites films of cassava starch plasticized with sucrose and inverted sugar and reinforced by cellulose nanocrystals (CNCs) were prepared by solution casting method incorporating 0.1 to 5 wt% of eucalyptus CNCs. The nanocrystals were characterized using transmission electron microscopy, whereas the bionanocomposites properties were studied using Fourier transform infrared spectroscopy, tensile measurements, water solubility, swelling behavior, and water activity (a(w)). The water resistance properties (solubility and swelling behavior) of the nanocomposites were enhanced with the addition of cellulose nanofillers. These results were explained in terms of the high crystallinity of the nanocrystals and the formation of a rigid network with the nanofillers, which provide physical barriers to the permeation of water within the hydrophilic cassava matrix. The addition of CNCs in the bionanocomposites decreases a(w) linearly, reaching values below 0.5 (for CNCs concentration higher than 4 wt%), a reference value for no microbial proliferation for food product design. The presence of small concentrations of CNCs (0.1-0.3 wt%) also effectively increased the maximum tensile strength (more than 90%) and elastic modulus (more than 400%), indicating the formation of a suitable percolation network in this concentration range. Because the cellulose nanofillers enhanced the mechanical and water stability properties of the nanocomposites, the obtained results in this work may be applied to the development of biodegradable packaging or coatings to enhance shelf life of food products. PRACTICAL APPLICATION The main drawbacks of using starch-based polymers as packaging or coating in the food industry are their low mechanical properties and inherent water sensitivity. This study demonstrates that cellulose nanocrystals can be used to: (i) obtain better mechanical properties (increasing the tensile strength and modulus more than 90% and 400%, respectively; (ii) enhance the water stability and (iii) water activity of starch-based films. These results indicate that the obtained environmentally friendly nanocomposites in this work can be used to the development of films or coatings to enhance the shelf life of food products.
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Affiliation(s)
- Jania B A da Silva
- Dept de Engenharia Química-Univ. Federal da Bahia, Rua Aristidis Novis, 2 Federação, Salvador, Bahia CEP 40210-630, Brazil
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30
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Applications of functionalized and nanoparticle-modified nanocrystalline cellulose. Trends Biotechnol 2012; 30:283-90. [DOI: 10.1016/j.tibtech.2012.02.001] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 02/06/2012] [Accepted: 02/06/2012] [Indexed: 12/16/2022]
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31
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Li Y, Ragauskas AJ. Ethanol organosolv lignin-based rigid polyurethane foam reinforced with cellulose nanowhiskers. RSC Adv 2012. [DOI: 10.1039/c2ra00646d] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Yang J, Han CR, Duan JF, Ma MG, Zhang XM, Xu F, Sun RC, Xie XM. Studies on the properties and formation mechanism of flexible nanocomposite hydrogels from cellulose nanocrystals and poly(acrylic acid). ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35498e] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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33
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Murray BS, Durga K, de Groot PWN, Kakoulli A, Stoyanov SD. Preparation and characterization of the foam-stabilizing properties of cellulose-ethyl cellulose complexes for use in foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:13277-13288. [PMID: 22103658 DOI: 10.1021/jf203501p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Surface active cellulose particles have been prepared for use as foam stabilizing agents in foods. Various sources of cellulose were broken down by combinations of milling, acid dissolution and treatment with cellulase. The most efficient and simple method was hammer and freezer milling of dry crystalline α-cellulose (Tencel). The resultant Tencel particles were made partially hydrophobic through precipitation of ethyl cellulose (EC) onto them in acetone-water dispersions. The optimum ratio of EC to cellulose and the optimum solids concentration (C(x)) at which to form the complexes were 1:1 and C(x) ≈ 1 wt %, respectively. Complexes combined at low concentrations (e.g., C(x) ≈ 0.1 wt %) with caseins or whey proteins gave significant improvements in stability of foams and bubbles to coalescence and disproportionation compared to either component alone. As such, the complexes could be a useful ingredient in improving the quality of various food foams.
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Affiliation(s)
- Brent S Murray
- Food Colloids Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
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