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Legay L, Budtova T, Buwalda S. Hyaluronic Acid Aerogels Made Via Freeze-Thaw-Induced Gelation. Biomacromolecules 2023; 24:4502-4509. [PMID: 37071924 DOI: 10.1021/acs.biomac.2c01518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
The biodegradability, biocompatibility, and bioactivity of hyaluronic acid (HA), a natural polysaccharide, combined with the low density, high porosity, and high specific surface area of aerogels attract interest for biomedical applications such as wound dressings. In this work, physically cross-linked HA aerogels were prepared via the freeze-thaw (FT) induced gelation method, solvent exchange, and drying with supercritical CO2. The morphology and properties of HA aerogels (volume shrinkage, density, and specific surface area) were investigated as a function of several process parameters: HA concentration, solution pH, number of FT cycles, and type of nonsolvent used during solvent exchange. We demonstrate that the HA solution pH plays a key role in the aerogel formation, as not all conditions result in materials with high specific surface area. HA aerogels were of low density (<0.2 g/cm3), high specific surface area (up to 600 m2/g), and high porosity (≥90%). Scanning electron microscopy pictures revealed that HA aerogels present a porous structure with meso- and small macropores. The results show that HA aerogels are promising biomaterials with tunable properties and internal structure that offer high potential as, e.g., wound dressings.
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Affiliation(s)
- Laurianne Legay
- MINES Paris, PSL University, Center for Materials Forming, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France
| | - Tatiana Budtova
- MINES Paris, PSL University, Center for Materials Forming, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France
| | - Sytze Buwalda
- MINES Paris, PSL University, Center for Materials Forming, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France
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2
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Salih KAM, Zhou K, Hamza MF, Mira H, Wei Y, Ning S, Guibal E, Salem WM. Phosphonation of Alginate-Polyethyleneimine Beads for the Enhanced Removal of Cs(I) and Sr(II) from Aqueous Solutions. Gels 2023; 9:gels9020152. [PMID: 36826322 PMCID: PMC9957171 DOI: 10.3390/gels9020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open
Abstract
Although Cs(I) and Sr(II) are not strategic and hazardous metal ions, their recovery from aqueous solutions is of great concern for the nuclear industry. The objective of this work consists of designing a new sorbent for the simultaneous recovery of these metals with selectivity against other metals. The strategy is based on the functionalization of algal/polyethyleneimine hydrogel beads by phosphonation. The materials are characterized by textural, thermo-degradation, FTIR, elemental, titration, and SEM-EDX analyses to confirm the chemical modification. To evaluate the validity of this modification, the sorption of Cs(I) and Sr(II) is compared with pristine support under different operating conditions: the pH effect, kinetics, and isotherms are investigated in mono-component and binary solutions, before investigating the selectivity (against competitor metals) and the possibility to reuse the sorbent. The functionalized sorbent shows a preference for Sr(II), enhanced sorption capacities, a higher stability at recycling, and greater selectivity against alkali, alkaline-earth, and heavy metal ions. Finally, the sorption properties are compared for Cs(I) and Sr(II) removal in a complex solution (seawater sample). The combination of these results confirms the superiority of phosphonated sorbent over pristine support with promising performances to be further evaluated with effluents containing radionuclides.
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Affiliation(s)
- Khalid A. M. Salih
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kanggen Zhou
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Mohammed F. Hamza
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
- Nuclear Materials Authority, POB 530, El-Maadi, Cairo 11728, Egypt
- Correspondence: (M.F.H.); (E.G.); Tel.: +20-1116681228 (M.F.H.); +33-(0)466782734 (E.G.)
| | - Hamed Mira
- Nuclear Materials Authority, POB 530, El-Maadi, Cairo 11728, Egypt
| | - Yuezhou Wei
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
- School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shunyan Ning
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Eric Guibal
- Polymers Composites and Hybrids (PCH), IMT Mines Ales, CEDEX, F-30319 Alès, France
- Correspondence: (M.F.H.); (E.G.); Tel.: +20-1116681228 (M.F.H.); +33-(0)466782734 (E.G.)
| | - Waheed M. Salem
- Medical Labs Department, Faculty of Applied Health Science Technology, Menoufia University, Shebine El-Koam 6131567, Egypt
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Selvasekaran P, Chidambaram R. Bioaerogels as food materials: A state-of-the-art on production and application in micronutrient fortification and active packaging of foods. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Horvat G, Pantić M, Knez Ž, Novak Z. A Brief Evaluation of Pore Structure Determination for Bioaerogels. Gels 2022; 8:gels8070438. [PMID: 35877523 PMCID: PMC9316429 DOI: 10.3390/gels8070438] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/01/2022] [Accepted: 07/11/2022] [Indexed: 01/03/2023] Open
Abstract
This review discusses the most commonly employed methods for determining pore size and pore size distribution in bioaerogels. Aerogels are materials with high porosity and large surface areas. Most of their pores are in the range of mesopores, between 2 and 50 nm. They often have smaller or larger pores, which presents a significant challenge in determining the exact mean pore size and pore size distribution in such materials. The precision and actual value of the pore size are of considerable importance since pore size and pore size distribution are among the main properties of aerogels and are often directly connected with the final application of those materials. However, many recently published papers discuss or present pore size as one of the essential achievements despite the misinterpretation or the wrong assignments of pore size determination. This review will help future research and publications evaluate the pore size of aerogels more precisely and discuss it correctly. The study covers methods such as gas adsorption, from which BJH and DFT models are often used, SEM, mercury porosimetry, and thermoporometry. The methods are described, and the results obtained are discussed. The following paper shows that there is still no precise method for determining pore size distribution or mean pore size in aerogels until now. Knowing that, it is expected that this field will evolve in the future.
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Affiliation(s)
- Gabrijela Horvat
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
| | - Milica Pantić
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
| | - Željko Knez
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Zoran Novak
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
- Correspondence:
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Composite Aerogel Comprised of Sodium Alginate and Bentonite via Supercritical CO 2 Drying: An Efficient Adsorbent for Lysozyme. Gels 2022; 8:gels8060359. [PMID: 35735703 PMCID: PMC9222501 DOI: 10.3390/gels8060359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 12/10/2022] Open
Abstract
To meet the demand for the separation of specific substances, the construction of porous composite aerogels with a high specific surface area and a strong adsorption capacity is still a challenge. Herein, a sodium alginate/bentonite composite aerogel was efficiently prepared through supercritical fluid drying. The aerogel’s volume shrank less during supercritical drying, maintaining its original three-dimensional mesh structure. The resulting aerogel had a large specific surface area (445 m2/g), a low density (0.059 g/cm3), and a large pore volume (3.617 cm3/g). Due to the fixation and intercalation effects, bentonite was uniformly dispersed in the sodium alginate matrixes. The adsorption of lysozyme by the composite aerogel was evaluated, and the results showed that the optimal adsorption pH was 8 when the pH of the phosphoric acid buffer solution was between pH = 5 and 8.5. The time for adsorption to reach equilibrium was 8 h. The adsorption capacity increased with the increase in bentonite content, and when the initial concentration of lysozyme was from 0.2 to 1.2 g/L, the adsorption capacity first increased and then stabilized, and the maximum adsorption amount was 697 mg/g. The adsorption behavior was simulated in the isothermal region, and the linear correlation coefficient of Langmuir isothermal adsorption fitting was found to be 0.997. Thus, this composite aerogel with strong adsorption capacity can be used as a good alternative to enzymatic adsorbents or immobilized materials.
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Hamza MF, Hamad DM, Hamad NA, Abdel-Rahman AAH, Fouda A, Wei Y, Guibal E, El-Etrawy AAS. Functionalization of magnetic chitosan microparticles for high-performance removal of chromate from aqueous solutions and tannery effluent. CHEMICAL ENGINEERING JOURNAL 2022; 428:131775. [DOI: 10.1016/j.cej.2021.131775] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Akgün IS, Erkey C. Fluidization regimes for alginate aerogel particles in a laboratory scale Wurster fluidized bed. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Wang J, Chen Z, Naguib HE. Preparation of a novel double crosslinked chitin aerogel via etherification with high strength. Carbohydr Polym 2021; 265:118014. [PMID: 33966821 DOI: 10.1016/j.carbpol.2021.118014] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 11/30/2022]
Abstract
In this study, we introduced a novel double crosslinked chitin aerogel via etherification with EGDE for mechanical reinforcement. Samples with different EGDE: chitin weight ratios from 0 to 1.5:1 were fabricated through chitin dissolution in KOH/urea aqueous solution, ethanol neutralization and washing, and supercritical CO2 drying. Both the physical and chemical crosslinking maintained the high porosity and light weight of chitin aerogels. The morphology under SEM has shown the close-ended and denser fibrils alignment for EGDE crosslinked aerogels and the mesoporous and macroporous structure induced by emulsion effect from excessive EGDE. FTIR characterization was conducted for chemical structure analysis. Compressive testing showed an increase of 247 % compressive strength at 10 % strain and 243 % modulus could be achieved at 1.0 EGDE samples. TGA results revealed a delayed thermal degradation for the chemically crosslinked samples. This study demonstrates EGDE an effective chemical crosslinker for reinforced chitin aerogels.
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Affiliation(s)
- Jintian Wang
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada.
| | - Zhiqiang Chen
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada; State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Hani E Naguib
- Department of Mechanical and Industrial Engineering, Department of Materials Science and Engineering, Institute of Biomaterials and Biomedical Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada.
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9
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Aerogels as porous structures for food applications: Smart ingredients and novel packaging materials. FOOD STRUCTURE 2021. [DOI: 10.1016/j.foostr.2021.100188] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Roquero DM, Bollella P, Melman A, Katz E. Nanozyme-Triggered DNA Release from Alginate Films. ACS APPLIED BIO MATERIALS 2020; 3:3741-3750. [DOI: 10.1021/acsabm.0c00348] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Daniel Massana Roquero
- Department of Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States
| | - Paolo Bollella
- Department of Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States
| | - Artem Melman
- Department of Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States
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11
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Fabrication and characterization of starch beads formed by a dispersion-inverse gelation process for loading polyphenols with improved antioxidation. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105565] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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12
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Abstract
AbstractPea and amylomaize starches were used to produce aerogel in form of monoliths and microparticles. The formation of starch gel was investigated, and we showed that each starch needed a different pasting temperature for its complete dissolution. The gelation kinetics was investigated with oscillatory rheometry for both systems as a function of the starch concentration. The gelation and retrogradation temperature of the starch gel were varied and its impact on the final aerogel evaluated. The emulsion gelation was carried out batch wise in a stirred vessel with different impeller geometries, concentrations of surfactant (Span80 and PGPR) and stirring rates. A particle size prediction approach based on idealized flow (Couette, 2D hyperbolic and turbulent) during the emulsification was proposed. A semi-continuous set-up for the emulsion gelation was developed in which the emulsification occurs in a single pass through a colloid mill and the gelation is triggered in-line with a counter-current heat exchanger.
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13
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Investigation of the effect of gel properties on supercritical drying kinetics of ionotropic alginate gel particles. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.104571] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Park SH, Lee SJ. Advanced molecular interaction in Cu2+-alginate beads with high M/G ratio for the intercalation of Li+ and Mg2+ ions. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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15
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Baudron V, Gurikov P, Smirnova I. A continuous approach to the emulsion gelation method for the production of aerogel micro-particle. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Oxidative conversion of lignin over cobalt-iron mixed oxides prepared via the alginate gelation. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.08.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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17
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Ganesan K, Budtova T, Ratke L, Gurikov P, Baudron V, Preibisch I, Niemeyer P, Smirnova I, Milow B. Review on the Production of Polysaccharide Aerogel Particles. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E2144. [PMID: 30384442 PMCID: PMC6265924 DOI: 10.3390/ma11112144] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/10/2018] [Accepted: 10/23/2018] [Indexed: 02/04/2023]
Abstract
A detailed study of the production of polysaccharide aerogel (bio-aerogel) particles from lab to pilot scale is surveyed in this article. An introduction to various droplets techniques available in the market is given and compared with the lab scale production of droplets using pipettes and syringes. An overview of the mechanisms of gelation of polysaccharide solutions together with non-solvent induced phase separation option is then discussed in the view of making wet particles. The main steps of particle recovery and solvent exchange are briefly described in order to pass through the final drying process. Various drying processes are overviewed and the importance of supercritical drying is highlighted. In addition, we present the characterization techniques to analyse the morphology and properties of the aerogels. The case studies of bio-aerogel (agar, alginate, cellulose, chitin, κ-carrageenan, pectin and starch) particles are reviewed. Potential applications of polysaccharide aerogel particles are briefly given. Finally, the conclusions summarize the prospects of the potential scale-up methods for producing bio-aerogel particles.
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Affiliation(s)
- Kathirvel Ganesan
- German Aerospace Center, Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
| | - Tatiana Budtova
- MINES Paris Tech, PSL Research University, Center for Materials Forming (CEMEF), UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France.
| | - Lorenz Ratke
- German Aerospace Center, Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
| | - Pavel Gurikov
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Victor Baudron
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Imke Preibisch
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Philipp Niemeyer
- German Aerospace Center, Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
| | - Irina Smirnova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Barbara Milow
- German Aerospace Center, Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany.
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Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer-Aerogele und -Schäume: Chemie, Eigenschaften und Anwendungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Wim J. Malfait
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Matthias M. Koebel
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Gustav Nyström
- Angewandte Holzforschung; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
- Departement Gesundheitswissenschaften und Technologie; ETH Zürich; Schmelzbergstrasse 9 CH-8092 Zürich Schweiz
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19
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Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer Aerogels and Foams: Chemistry, Properties, and Applications. Angew Chem Int Ed Engl 2018; 57:7580-7608. [DOI: 10.1002/anie.201709014] [Citation(s) in RCA: 336] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Wim J. Malfait
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Matthias M. Koebel
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Gustav Nyström
- Applied Wood Materials Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
- Department of Health Science and Technology; ETH Zurich; Schmelzbergstrasse 9 CH-8092 Zürich Switzerland
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Manzocco L, Valoppi F, Calligaris S, Andreatta F, Spilimbergo S, Nicoli MC. Exploitation of κ-carrageenan aerogels as template for edible oleogel preparation. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2017.04.021] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Bifunctional carbohydrate biopolymers entrapped lipase as catalyst for the two consecutive conversions of α-pinene to oxy-derivatives. Carbohydr Polym 2016; 152:726-733. [DOI: 10.1016/j.carbpol.2016.07.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/14/2016] [Accepted: 07/15/2016] [Indexed: 11/17/2022]
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22
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Subrahmanyam R, Gurikov P, Dieringer P, Sun M, Smirnova I. On the Road to Biopolymer Aerogels-Dealing with the Solvent. Gels 2015; 1:291-313. [PMID: 30674178 PMCID: PMC6318595 DOI: 10.3390/gels1020291] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 12/08/2015] [Accepted: 12/08/2015] [Indexed: 12/02/2022] Open
Abstract
Aerogels are three-dimensional ultra-light porous structures whose characteristics make them exciting candidates for research, development and commercialization leading to a broad scope of applications ranging from insulation and catalysis to regenerative medicine and pharmaceuticals. Biopolymers have recently entered the aerogel foray. In order to fully realize their potential, progressive strategies dealing with production times and costs reduction must be put in place to facilitate the scale up of aerogel production from lab to commercial scale. The necessity of studying solvent/matrix interactions during solvent exchange and supercritical CO₂ drying is presented in this study using calcium alginate as a model system. Four frameworks, namely (a) solvent selection methodology based on solvent/polymer interaction; (b) concentration gradient influence during solvent exchange; (c) solvent exchange kinetics based on pseudo second order model; and (d) minimum solvent concentration requirements for supercritical CO₂ drying, are suggested that could help assess the role of the solvent in biopolymer aerogel production.
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Affiliation(s)
- Raman Subrahmanyam
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Pavel Gurikov
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Paul Dieringer
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Miaotian Sun
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Irina Smirnova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
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23
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Raman S, Gurikov P, Smirnova I. Hybrid alginate based aerogels by carbon dioxide induced gelation: Novel technique for multiple applications. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.05.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Ventura MG, Paninho AI, Nunes AVM, Fonseca IM, Branco LC. Biocompatible locust bean gum mesoporous matrices prepared by ionic liquids and a scCO2 sustainable system. RSC Adv 2015. [DOI: 10.1039/c5ra17314k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Locust bean gum (LBG) is a natural polymer that belongs to the increasingly attractive biodegradable mesoporous matrices prepared from ionic liquids and scCO2 sustainable method.
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Affiliation(s)
- Márcia G. Ventura
- LAQV-REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Monte de Caparica
| | - Ana I. Paninho
- LAQV-REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Monte de Caparica
| | - Ana V. M. Nunes
- LAQV-REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Monte de Caparica
| | - Isabel M. Fonseca
- LAQV-REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Monte de Caparica
| | - Luís C. Branco
- LAQV-REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Monte de Caparica
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Ulker Z, Erkey C. A novel hybrid material: an inorganic silica aerogel core encapsulated with a tunable organic alginate aerogel layer. RSC Adv 2014. [DOI: 10.1039/c4ra09089f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This novel layered hybrid aerogel will pave the way for development of drug delivery devices with superior properties.
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26
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Mikkonen KS, Parikka K, Ghafar A, Tenkanen M. Prospects of polysaccharide aerogels as modern advanced food materials. Trends Food Sci Technol 2013. [DOI: 10.1016/j.tifs.2013.10.003] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Vincent T, Taulemesse JM, Dauvergne A, Chanut T, Testa F, Guibal E. Thallium(I) sorption using Prussian blue immobilized in alginate capsules. Carbohydr Polym 2013; 99:517-26. [PMID: 24274538 DOI: 10.1016/j.carbpol.2013.08.076] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 08/23/2013] [Indexed: 11/26/2022]
Abstract
Prussian blue (PB) was immobilized in alginate capsules. The composite sorbent was used for the recovery of Tl(I) ions from slightly acidic solutions: optimum pH being close to 4. The sorption isotherm can be described by the bi-site Langmuir sorption isotherm. This means that the metal ion can be bound through two different sorption sites: one having a strong affinity for Tl(I) (probably PB), the other having a lower affinity (probably the encapsulating material). The kinetics are described by either the pseudo-second order rate equation or the Crank's equation (resistance to intraparticle diffusion). The ionic strength (increased by addition of NaCl, KCl or CaCl₂) slightly decreased sorption capacity. The SEM-EDX analysis of PB-alginate capsules (before and after Tl(I) sorption) shows that the PB is homogeneously distributed in the capsules and that all reactive groups remain available for metal binding.
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Affiliation(s)
- Thierry Vincent
- Ecole des Mines d'Alès, Centre des Matériaux des Mines d'Alès, 6, avenue de Clavières, F-30319 Alès cedex, France
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Veronovski A, Novak Z, Knez Ž. Synthesis and Use of Organic Biodegradable Aerogels as Drug Carriers. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:873-86. [DOI: 10.1163/092050611x566126] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Anja Veronovski
- a Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
| | - Zoran Novak
- b Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
| | - Željko Knez
- c Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia.
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Rinki K, Dutta PK, Hunt AJ, Macquarrie DJ, Clark JH. Chitosan Aerogels Exhibiting High Surface Area for Biomedical Application: Preparation, Characterization, and Antibacterial Study. INT J POLYM MATER PO 2011. [DOI: 10.1080/00914037.2011.553849] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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García-González C, Alnaief M, Smirnova I. Polysaccharide-based aerogels—Promising biodegradable carriers for drug delivery systems. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.066] [Citation(s) in RCA: 371] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Robitzer M, Tourrette A, Horga R, Valentin R, Boissière M, Devoisselle J, Di Renzo F, Quignard F. Nitrogen sorption as a tool for the characterisation of polysaccharide aerogels. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.01.040] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Alnaief M, Alzaitoun M, García-González C, Smirnova I. Preparation of biodegradable nanoporous microspherical aerogel based on alginate. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.060] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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From Natural Polysaccharides to Materials for Catalysis, Adsorption, and Remediation. Top Curr Chem (Cham) 2010; 294:165-97. [DOI: 10.1007/128_2010_56] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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35
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Butewicz A, Gavilan KC, Pestov AV, Yatluk Y, Trochimczuk AW, Guibal E. Palladium and platinum sorption on a thiocarbamoyl-derivative of chitosan. J Appl Polym Sci 2010. [DOI: 10.1002/app.31877] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Barbetta A, Barigelli E, Dentini M. Porous Alginate Hydrogels: Synthetic Methods for Tailoring the Porous Texture. Biomacromolecules 2009; 10:2328-37. [DOI: 10.1021/bm900517q] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrea Barbetta
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy
| | - Elena Barigelli
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy
| | - Mariella Dentini
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy
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37
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Robitzer M, David L, Rochas C, Di Renzo F, Quignard F. Nanostructure of calcium alginate aerogels obtained from multistep solvent exchange route. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12547-12552. [PMID: 18844384 DOI: 10.1021/la802103t] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Ca-alginate materials were studied by small-angle X-ray scattering (SAXS) at different steps of conversion from gel to aerogel in order to determine the relation between the polymer organization at the nanoscale in the gels and the final dry aerogel. In all cases, i.e. before and after the different exchanges of solvents and after the formation of the aerogel, the SAXS patterns exhibit an asymptotic behavior at low q values (in the experimental q range 7x10(-3) up to 2.10(-2) A(-1)) close to I(q) approximately q(-1), indicative of randomly oriented rod-like scattering objects. The evolution of the diameter of such rod-like objects was thus deduced from the maxima observed on Kratky plots, i.e. I(q) q2 vs q. The results are in perfect agreement qualitatively (rod-like anisometry type of the scattering objects) and quantitatively (diameter of the rods) with direct SEM observations of the morphology of aerogels and with the results of N2 adsorption on the aerogel. This is evidence that in the chosen experimental processing conditions, the morphology of the aerogel depends on the morphology of pre-existing objects within the gel, i.e. that the structure of the aerogel provides a correct image of the structure of the parent gel.
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Affiliation(s)
- Mike Robitzer
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-ENSCM-UM2-UM1, Matériaux Avancés pour la Catalyse et la Santé, ENSCM, 8 rue Ecole Normale, 34296 Montpellier Cedex 5, France
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