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Sato T, Makino K, Tamesue S, Ishiura G, Itoh N. Preparation and Permeation Properties of a pH-Responsive Polyacrylic Acid Coated Porous Alumina Membrane. MEMBRANES 2023; 13:82. [PMID: 36676889 PMCID: PMC9863411 DOI: 10.3390/membranes13010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/26/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
A pH-responsive membrane is expected to be used for applications such as drug delivery, controlling chemical release, bioprocessing, and water treatment. Polyacrylic acid (PAA) is a pH-responsive polymer that swells at high pH. A tubular α-alumina porous support was coated with PAA by grafting to introduce appropriate functional groups, followed by polymerization with acrylic acid. The permeances of acetic acid, lactic acid, phenol, and caffeine were evaluated by circulating water inside the membrane, measuring the concentration of species that permeated into the water, and analyzing the results with the permeation model. The permeance of all species decreased with increasing pH, and that of phenol was the largest among these species. At high pH, the PAA carboxy group in the membrane dissociated into carboxy ions and protons, causing the swelling of PAA due to electrical repulsion between the negative charges of the PAA chain, which decreased the pore size of the membrane and suppressed permeation. Furthermore, the electrical repulsion between negatively charged species and the PAA membrane also suppressed the permeation. The results of this study demonstrated that the PAA-coated α-alumina porous support functioned as a pH-responsive membrane.
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Affiliation(s)
- Takafumi Sato
- Department of Fundamental Engineering, Utsunomiya University, Yoto, Utsunomiya 7-1-2, Tochigi, Japan
| | - Kotomi Makino
- Division of Engineering and Agriculture, Utsunomiya University, Yoto, Utsunomiya 7-1-2, Tochigi, Japan
| | - Shingo Tamesue
- Department of Fundamental Engineering, Utsunomiya University, Yoto, Utsunomiya 7-1-2, Tochigi, Japan
| | - Gakuto Ishiura
- Department of Fundamental Engineering, Utsunomiya University, Yoto, Utsunomiya 7-1-2, Tochigi, Japan
| | - Naotsugu Itoh
- Department of Fundamental Engineering, Utsunomiya University, Yoto, Utsunomiya 7-1-2, Tochigi, Japan
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Sato T, Ogino R, Makino K, Itoh N. pH-Responsive Permeation in Packed Layers of Polyacrylic Acid-Coated Alumina Particles. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2022. [DOI: 10.1252/jcej.21we091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takafumi Sato
- Department of Fundamental Engineering, Utsunomiya University
| | - Ryuya Ogino
- Division of Engineering and Agriculture, Utsunomiya University
| | - Kotomi Makino
- Division of Engineering and Agriculture, Utsunomiya University
| | - Naotsugu Itoh
- Department of Fundamental Engineering, Utsunomiya University
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Wan Ikhsan SN, Yusof N, Aziz F, Ismail AF, Jaafar J, Wan Salleh WN, Misdan N. Superwetting materials for hydrophilic-oleophobic membrane in oily wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 290:112565. [PMID: 33873023 DOI: 10.1016/j.jenvman.2021.112565] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
The vast amount of oily wastewater released to the environment through industrialization has worsened the water quality in recent years, posing adverse impacts on general human health. Oil emulsified in water is one of the most difficult mixtures to be treated, making it imperative for new technology to be explored to address this issue. The use of conventional water treatment such as flotation, coagulation, precipitation, adsorption, and chemical treatment have low separation efficiencies and high energy costs, and are not applicable to the separation of oil/water emulsions. Therefore, there is a demand for more efficient methods and materials for the separations of immiscible oil/water mixtures and emulsions. Superwetting materials that can repel oil, while letting water pass through have been widely explored to fit into this concern. These materials usually make use of simultaneous hydrophilic/oleophobic mechanisms to allow a solid surface to separate oily emulsion with little to no use of energy. Also, by integrating specific wettability concepts with appropriate pore scale, solid surfaces may achieve separation of multifarious oil/water mixtures namely immiscible oil/water blends and consolidated emulsions. In this review, materials used to impart superwetting in solid surfaces by focusing on superhydrophilic/superoleophobic wetting properties of the materials categorized into fluorinated and non-fluorinated surface modification are summarized. In each material, its background, mechanism, fabricating processes, and their effects on solid surface's wetting capability are elaborated in detail. The materials reviewed in this paper are mainly organic and green, suggesting the alternative material to replace the fluorine group that is widely used to achieve oleophobicity in oily wastewater treatment.
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Affiliation(s)
- Syarifah Nazirah Wan Ikhsan
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Norhaniza Yusof
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia.
| | - Farhana Aziz
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Juhana Jaafar
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Wan Norharyati Wan Salleh
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Nurasyikin Misdan
- Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Hab Pendidikan Tinggi Pagoh, Km 1, Jalan Panchor, Muar, Johor, 84600, Malaysia
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Liang S, Liu Y, Fu T, Yang F, Chen X, Yan G. A water-soluble and biocompatible polymeric nanolabel based on naphthalimide grafted poly(acrylic acid) for the two-photon fluorescence imaging of living cells and C. elegans. Colloids Surf B Biointerfaces 2016; 148:293-298. [DOI: 10.1016/j.colsurfb.2016.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 01/02/2023]
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Suzuki K, Yumura T, Tanaka Y, Akashi M. pH-Responsive Model Drug Release from Silica-Poly(methacrylic acid) Interpenetrating Gel Hybrids. J BIOACT COMPAT POL 2016. [DOI: 10.1106/1h3c-hn3r-ykua-2b29] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Stimuli-responsive gel was hybridized with porous silica particles, by radical polymerization of methacrylic acid (MA) in the presence of a crosslinker. Brilliant Blue FCF (BBFCF) was encapsulated in the core of the particle and its release behavior from the particle under specific stimuli was studied. PMA gel hybridized silica particles showed specific release behavior at different pH values while normal silica particles released BBFCF at the same rate at all pHs.
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Affiliation(s)
| | - Takeshi Yumura
- Japan Chemical Innovation Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Yuko Tanaka
- Osaka National Research Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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Chan AJ, Steenkeste K, Canette A, Eloy M, Brosson D, Gaboriaud F, Fontaine-Aupart MP. Natural Rubber-Filler Interactions: What Are the Parameters? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12437-12446. [PMID: 26488560 DOI: 10.1021/acs.langmuir.5b03244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Reinforcement of a polymer matrix through the incorporation of nanoparticles (fillers) is a common industrial practice that greatly enhances the mechanical properties of the composite material. The origin of such mechanical reinforcement has been linked to the interaction between the polymer and filler as well as the homogeneous dispersion of the filler within the polymer matrix. In natural rubber (NR) technology, knowledge of the conditions necessary to achieve more efficient NR-filler interactions is improving continuously. This study explores the important physicochemical parameters required to achieve NR-filler interactions under dilute aqueous conditions by varying both the properties of the filler (size, composition, surface activity, concentration) and the aqueous solution (ionic strength, ion valency). By combining fluorescence and electron microscopy methods, we show that NR and silica interact only in the presence of ions and that heteroaggregation is favored more than homoaggregation of silica-silica or NR-NR. The interaction kinetics increases with the ion valence, whereas the morphology of the heteroaggregates depends on the size of silica and the volume percent ratio (dry silica/dry NR). We observe dendritic structures using silica with a diameter (d) of 100 nm at a ∼20-50 vol % ratio, whereas we obtain raspberry-like structures using silica with d = 30 nm particles. We observe that in liquid the interaction is controlled by the hydrophilic bioshell, in contrast to dried conditions, where hydrophobic polymer dominates the interaction of NR with the fillers. A good correlation between the nanoscopic aggregation behavior and the macroscopic aggregation dynamics of the particles was observed. These results provide insight into improving the reinforcement of a polymer matrix using NR-filler films.
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Affiliation(s)
- Alan Jenkin Chan
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405, Orsay, France
- Manufacture Française des Pneumatiques Michelin , 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 9, France
| | - Karine Steenkeste
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405, Orsay, France
| | - Alexis Canette
- INRA AgroParisTech, Micalis, UMR 1319, 91300 Massy, France
| | - Marie Eloy
- Manufacture Française des Pneumatiques Michelin , 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 9, France
| | - Damien Brosson
- Manufacture Française des Pneumatiques Michelin , 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 9, France
| | - Fabien Gaboriaud
- Manufacture Française des Pneumatiques Michelin , 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 9, France
| | - Marie-Pierre Fontaine-Aupart
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405, Orsay, France
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Cui J, van Koeverden MP, Müllner M, Kempe K, Caruso F. Emerging methods for the fabrication of polymer capsules. Adv Colloid Interface Sci 2014; 207:14-31. [PMID: 24210468 DOI: 10.1016/j.cis.2013.10.012] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/11/2013] [Accepted: 10/13/2013] [Indexed: 12/13/2022]
Abstract
Hollow polymer capsules are attracting increasing research interest due to their potential application as drug delivery vectors, sensors, biomimetic nano- or multi-compartment reactors and catalysts. Thus, significant effort has been directed toward tuning their size, composition, morphology, and functionality to further their application. In this review, we provide an overview of emerging techniques for the fabrication of polymer capsules, encompassing: self-assembly, layer-by-layer assembly, single-step polymer adsorption, bio-inspired assembly, surface polymerization, and ultrasound assembly. These techniques can be applied to prepare polymer capsules with diverse functionality and physicochemical properties, which may fulfill specific requirements in various areas. In addition, we critically evaluate the challenges associated with the application of polymer capsules in drug delivery systems.
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Affiliation(s)
- Jiwei Cui
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Martin P van Koeverden
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Markus Müllner
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Kristian Kempe
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Frank Caruso
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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8
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Somaratne MCW, Liyanage NMVK, Walpalage S. Contribution of hydrogen and/or covalent bonds on reinforcement of natural rubber latex films with surface modified silica. J Appl Polym Sci 2014. [DOI: 10.1002/app.40380] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Chandani Wasantha Somaratne
- Division of Polymer, Textile and Chemical Engineering Technology; Institute of Technology University of Moratuwa; Moratuwa Sri Lanka
| | | | - Shantha Walpalage
- Department of Chemical and Process Engineering; University of Moratuwa; Moratuwa Sri Lanka
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Abstract
A novel thermoresponsive Cu(II) ion-imprinted composite hydrogel [Cu(II)-IICH] based on N-isopropylacrylamide (NIPAM) and aminated silica (SiO2-NH2) has been prepared by in situ free-radical polymerization using Cu(II) ion as template. The Cu(II)-IICH was used to remove heavy metal ions from aqueous solution at 20 and 40oC. The Cu(II)-IICH selectively bound the template ion above a critical gel transition temperature (CGTT) of crosslinked poly(N-isopropylacrylamide) (PNIPAM). The memory was fixed by shrinking above the CGTT, and was deleted by swelling below the CGTT. In order to study the reusability of the Cu(II)-IICH, the sorption-desorption cycles were performed for five times. The results suggested that the Cu(II)-IICH can be used for several times without significantly decreasing its adsorption capacity.
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10
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Wang J, Li X. Ion-Imprinted Composite Hydrogels with Excellent Mechanical Strength for Selective and Fast Removal of Cu2+. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3022016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingjing Wang
- School of Energy and Environment, Southeast University, Nanjing 210096, China, and Department of Polymer Materials and Engineering, School
of Material Engineering, Yancheng Institute of Technology, Yancheng 224051,
China
| | - Xianning Li
- School of Energy
and Environment, Southeast University,
Nanjing 210096, China
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Zengin H, Hu B, Siddiqui JA, Ottenbrite RM. Effects of surface modification of glass beads with poly(acrylic acid). Des Monomers Polym 2012. [DOI: 10.1163/156855502760157908] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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12
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Durand N, Boutevin B, Silly G, Améduri B. “Grafting From” Polymerization of Vinylidene Fluoride (VDF) from Silica to Achieve Original Silica–PVDF Core–Shells. Macromolecules 2011. [DOI: 10.1021/ma2018167] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nelly Durand
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
| | - Bernard Boutevin
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
| | - Gilles Silly
- Chalcogénures et Verres, Institut Charles Gerhardt (UMR 5253-CNRS), CC1503, Université de Montpellier 2, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Bruno Améduri
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
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Durand N, Gaveau P, Silly G, Améduri B, Boutevin B. Radical Grafting of Tetrafluoroethylene and Vinylidene Fluoride Telomers onto Silica Bearing Vinyl Groups. Macromolecules 2011. [DOI: 10.1021/ma200921b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nelly Durand
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
| | - Philippe Gaveau
- Institut Charles Gerhardt de Montpellier (UMR 5253-CNRS), Université de Montpellier 2, place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Gilles Silly
- Chalcogénures et Verres, Institut Charles Gerhardt (UMR 5253-CNRS), CC1503, Université de Montpellier 2, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Bruno Améduri
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
| | - Bernard Boutevin
- Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France
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Durand N, Mariot D, Améduri B, Boutevin B, Ganachaud F. Tailored covalent grafting of hexafluoropropylene oxide oligomers onto silica nanoparticles: toward thermally stable, hydrophobic, and oleophobic nanocomposites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4057-4067. [PMID: 21391662 DOI: 10.1021/la1048826] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The modification of silica nanoparticles with hexafluoropropylene oxide (HFPO) oligomers has been investigated. HFPO oligomers with two different average degrees of polymerization (DPn = 8 and 15) were first prepared by anionic ring-opening polymerization, deactivated by methanol, and in some cases postfunctionalized by aminopropyl(tri)ethoxysilane or allylamine. The "grafting onto" reactions of these oligomers were then carried out either on bare silica (reaction between a silanol surface and ethoxy-silanized HFPO) or on silica functionalized by amino groups (in an amidation reaction with methyl ester-ended HFPO) or mercapto groups (via the radical addition of allyl-functionalized HFPO). Hybrid nanoparticles thus obtained were characterized by solid-state (29)Si NMR and FTIR spectroscopies as well as elemental and thermogravimetric analyses. The results assessed a significant yield of covalent grafting of HFPO oligomers when performing the hydrolysis-condensation of ethoxylated HFPO on the bare silica surface, compared to the other two methods that merely led to physically adsorbed HFPO chains. Chemically grafted nanohybrids showed a high thermal stability (up to 400 °C) as well as a very low surface tension (typically 5 mN/m) compared to physisorbed complexes.
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Affiliation(s)
- Nelly Durand
- Institut Charles Gerhardt, Ingénierie et Architectures Macromoléculaires, UMR CNRS 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue de l'Ecole Normale, 34296 Montpellier, France
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Wang Y, Hosta-Rigau L, Lomas H, Caruso F. Nanostructured polymer assemblies formed at interfaces: applications from immobilization and encapsulation to stimuli-responsive release. Phys Chem Chem Phys 2011; 13:4782-801. [DOI: 10.1039/c0cp02287j] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Drisko GL, Imperia P, de los Reyes M, Luca V, Caruso RA. Size matters: incorporation of poly(acrylic acid) and small molecules into hierarchically porous metal oxides prepared with and without templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14203-14209. [PMID: 20806966 DOI: 10.1021/la101415c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Template synthesis of metal oxides can create materials with highly controlled and reproducible pore structures that can be optimized for particular applications. Zirconium titanium oxides (25:75 mol %) with three different pore structures were synthesized in order to relate polymer loading capacity to macropore architecture. Sol-gel chemistry was used to prepare the materials in conjunction with (i) agarose gel templating, (ii) no template, and (iii) stearic acid templating. The three materials possessed high surface areas (212-316 m(2) g(-1)). Surface modification was performed postsynthetically using propionic acid (a monomer), glutaric acid (a dimer), and three molecular weights of poly(acrylic acid) (2000, 100,000, and 250,000 g mol(-1)). Higher loading (mg g(-1)) was observed for the polymers than for the small molecules. Following surface modification, a perceptible decrease in surface area and mesopore volume was noted, but both mesoporosity and macroporosity were retained. The pore architecture had a strong bearing on the quantity and rate of polymer incorporation into metal oxides. The templated pellet with hierarchical porosity outperformed the nontemplated powder and the mesoporous monolith (in both loading capacity and surface coverage). The materials were subjected to irradiation with (60)Co gamma-rays to determine the radiolytic stability of the inorganic support and the hybrid material containing the monomer, dimer, and polymer. The polymer and the metal oxide substrate demonstrated notable radiolytic stability.
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Affiliation(s)
- Glenna L Drisko
- Particulate Fluids Processing Centre, School of Chemistry, The University of Melbourne, Melbourne VIC 3010, Australia
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17
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Wang TL, Yang CH, Shieh YT, Yeh AC. Synthesis of CdSe-Poly(N
-vinylcarbazole) Nanocomposite by Atom Transfer Radical Polymerization for Potential Optoelectronic Applications. Macromol Rapid Commun 2009; 30:1679-83. [DOI: 10.1002/marc.200900349] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Indexed: 11/07/2022]
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18
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Wang TL, Ou CC, Yang CH. Synthesis and properties of organic/inorganic hybrid nanoparticles prepared using atom transfer radical polymerization. J Appl Polym Sci 2008. [DOI: 10.1002/app.28462] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Park JH, Lee YH, Oh SG. Preparation of Thermosensitive PNIPAm-Grafted Mesoporous Silica Particles. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200700247] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Heikkinen JJ, Heiskanen JP, Hormi OE. Grafting of functionalized silica particles with poly(acrylic acid). POLYM ADVAN TECHNOL 2006. [DOI: 10.1002/pat.727] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Guo Z, Liu W, Li Y, Yu J. Grafting of Poly(ethylene glycol)s onto Nanometer Silica Surface by a One‐Step Procedure. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2005. [DOI: 10.1081/ma-200046982] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Rózga-Wijas K, Chojnowski J, Fortuniak W, Ścibiorek M, Michalska Z, Rogalski Ł. Branched functionalised polysiloxane–silica hybrids for immobilisation of catalysts. ACTA ACUST UNITED AC 2003. [DOI: 10.1039/b304134d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yoshinaga K. Functionalization of Inorganic Colloidal Particles by Polymer Modification. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.2349] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Sartore L, Penco M, Bignotti F, Peroni I, Gil MH, Ramos MA, D'Amore A. Grafting of selected presynthesized macromonomers onto various dispersions of silica particles. J Appl Polym Sci 2002. [DOI: 10.1002/app.10726] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Suzuki K, Yumura T, Tanaka Y, Akashi M. Thermo-responsive release from interpenetrating porous silica-poly(N-isopropylacrylamide) hybrid gels. J Control Release 2001; 75:183-9. [PMID: 11451508 DOI: 10.1016/s0168-3659(01)00393-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Novel thermo-responsive inorganic-organic hybrid gels were prepared by hybridizing porous silica and poly(N-isopropylacrylamide) gels (PNIPAAm gel). The internal pores of the silica were filled with PNIPAAm gel to give a thermo-responsive drug reservoir. Brilliant blue FCF (BB) was also added to the hybrid gels for release. The BB release rate was faster above the lower critical solution temperature (LCST) of the PNIPAAm gel than below the LCST. When the temperature changed across the LCST, reversible and thermo-responsive release behavior was observed. The transition of the release behavior upon changing the temperature was similar to the behavior of the PNIPAAm gel itself. The BB release rate can be controlled simply by changing the amount of PNIPAAm gel loaded into the silica.
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Affiliation(s)
- K Suzuki
- Japan Chemical Innovation Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
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