The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
André Vioux - One of the best experts on this subject based on the ideXlab platform.
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unique combination of mechanical strength thermal stability and high ion conduction in pmma silica nanocomposites containing high loadings of ionic liquid
Chemistry of Materials, 2009Co-Authors: Florence Gayet, Lydie Viau, Fabrice Leroux, Frederic Mabille, Sophie Monge, Jeanjacques Robin, André ViouxAbstract:We report the simple synthesis of tractable and high ion conducting PMMA-silica nanocomposites achieved by sol−gel Processing. Mechanical strength was obtained by incorporating silica nanofillers covalently bonded to the polymer chains, whereas flexibility, thermal stability, and high ionic conduction were provided by the ionic liquid.
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Immobilization of ionic liquids in translucent tin dioxide monoliths by sol–gel Processing
Dalton Transactions, 2009Co-Authors: André Vioux, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, Séverine BellayerAbstract:SnO2 translucent monolith ionogels were obtained by a sol–gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 ◦C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8–12 nm and mean pore sizes around 5 nm
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Immobilization of ionic liquids in translucent tin dioxide monoliths by Sol-Gel Processing
Dalton Transactions, 2009Co-Authors: Séverine Bellayer, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, André ViouxAbstract:SnO2 translucent monolith ionogels were obtained by a Sol-Gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 degrees C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8-12 nm and mean pore sizes around 5 nm.
Séverine Bellayer - One of the best experts on this subject based on the ideXlab platform.
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Immobilization of ionic liquids in translucent tin dioxide monoliths by sol–gel Processing
Dalton Transactions, 2009Co-Authors: André Vioux, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, Séverine BellayerAbstract:SnO2 translucent monolith ionogels were obtained by a sol–gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 ◦C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8–12 nm and mean pore sizes around 5 nm
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Immobilization of ionic liquids in translucent tin dioxide monoliths by Sol-Gel Processing
Dalton Transactions, 2009Co-Authors: Séverine Bellayer, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, André ViouxAbstract:SnO2 translucent monolith ionogels were obtained by a Sol-Gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 degrees C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8-12 nm and mean pore sizes around 5 nm.
Showan N. Nazhat - One of the best experts on this subject based on the ideXlab platform.
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Effect of Processing parameters on textural and bioactive properties of sol–gel-derived borate glasses
Journal of Materials Science, 2017Co-Authors: William C Lepry, Shiva Naseri, Showan N. NazhatAbstract:A compositional range of recently developed bioactive sol–gel-derived borate glasses (SGBGs) have demonstrated remarkably rapid rates of conversion to hydroxy-carbonated apatite (HCA) in simulated body fluid (SBF). Although the composition of SGBGs did not greatly impact HCA conversion rates, it is still unknown how the sol–gel Processing parameters affect the textural properties and thus bioactivity of the glass. In this study, a borate-substituted Bioglass^® “45S5” formulation [(46.1)B_2O_3-(26.9)CaO-(24.4)Na_2O-(2.6)P_2O_5; mol%] was fabricated using different sol–gel Processing parameters including precursor materials, ageing time and temperature, along with calcination rate and temperature. It was found that a higher calcination temperature led to a partially crystallized glass with almost a magnitude decrease in specific surface area relative to the other glasses. All Processing routes resulted in highly bioactive glasses according to Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy, which confirmed HCA formation in SBF in as little as 2 h. The majority of ion-exchange occurred within 30 min, facilitating this rapid conversion to bone-like HCA. Interestingly, the partially crystallized glasses (i.e., glass–ceramics) also underwent full conversion to HCA in SBF. Furthermore, ageing time and temperature did not affect the bioactive properties of these glasses, which allow for significantly reduced Processing times. In summary, this study demonstrates that SGBGs can be tailored for targeted tissue engineering applications by varying the sol–gel Processing parameters.
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Effect of Processing parameters on textural and bioactive properties of Sol-Gel-derived borate glasses
Journal of Materials Science, 2017Co-Authors: William C Lepry, Shiva Naseri, Showan N. NazhatAbstract:A compositional range of recently developed bioactive sol–gel-derived borate glasses (SGBGs) have demonstrated remarkably rapid rates of conversion to hydroxy-carbonated apatite (HCA) in simulated body fluid (SBF). Although the composition of SGBGs did not greatly impact HCA conversion rates, it is still unknown how the sol–gel Processing parameters affect the textural properties and thus bioactivity of the glass. In this study, a borate-substituted Bioglass® “45S5” formulation [(46.1)B2O3-(26.9)CaO-(24.4)Na2O-(2.6)P2O5; mol%] was fabricated using different sol–gel Processing parameters including precursor materials, ageing time and temperature, along with calcination rate and temperature. It was found that a higher calcination temperature led to a partially crystallized glass with almost a magnitude decrease in specific surface area relative to the other glasses. All Processing routes resulted in highly bioactive glasses according to Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy, which confirmed HCA formation in SBF in as little as 2 h. The majority of ion-exchange occurred within 30 min, facilitating this rapid conversion to bone-like HCA. Interestingly, the partially crystallized glasses (i.e., glass–ceramics) also underwent full conversion to HCA in SBF. Furthermore, ageing time and temperature did not affect the bioactive properties of these glasses, which allow for significantly reduced Processing times. In summary, this study demonstrates that SGBGs can be tailored for targeted tissue engineering applications by varying the sol–gel Processing parameters.
Lydie Viau - One of the best experts on this subject based on the ideXlab platform.
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unique combination of mechanical strength thermal stability and high ion conduction in pmma silica nanocomposites containing high loadings of ionic liquid
Chemistry of Materials, 2009Co-Authors: Florence Gayet, Lydie Viau, Fabrice Leroux, Frederic Mabille, Sophie Monge, Jeanjacques Robin, André ViouxAbstract:We report the simple synthesis of tractable and high ion conducting PMMA-silica nanocomposites achieved by sol−gel Processing. Mechanical strength was obtained by incorporating silica nanofillers covalently bonded to the polymer chains, whereas flexibility, thermal stability, and high ionic conduction were provided by the ionic liquid.
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Immobilization of ionic liquids in translucent tin dioxide monoliths by sol–gel Processing
Dalton Transactions, 2009Co-Authors: André Vioux, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, Séverine BellayerAbstract:SnO2 translucent monolith ionogels were obtained by a sol–gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 ◦C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8–12 nm and mean pore sizes around 5 nm
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Immobilization of ionic liquids in translucent tin dioxide monoliths by Sol-Gel Processing
Dalton Transactions, 2009Co-Authors: Séverine Bellayer, Lydie Viau, Thierry Toupance, Jean Le Bideau, Zoë Tebby, André ViouxAbstract:SnO2 translucent monolith ionogels were obtained by a Sol-Gel Processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 degrees C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8-12 nm and mean pore sizes around 5 nm.
William C Lepry - One of the best experts on this subject based on the ideXlab platform.
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Effect of Processing parameters on textural and bioactive properties of sol–gel-derived borate glasses
Journal of Materials Science, 2017Co-Authors: William C Lepry, Shiva Naseri, Showan N. NazhatAbstract:A compositional range of recently developed bioactive sol–gel-derived borate glasses (SGBGs) have demonstrated remarkably rapid rates of conversion to hydroxy-carbonated apatite (HCA) in simulated body fluid (SBF). Although the composition of SGBGs did not greatly impact HCA conversion rates, it is still unknown how the sol–gel Processing parameters affect the textural properties and thus bioactivity of the glass. In this study, a borate-substituted Bioglass^® “45S5” formulation [(46.1)B_2O_3-(26.9)CaO-(24.4)Na_2O-(2.6)P_2O_5; mol%] was fabricated using different sol–gel Processing parameters including precursor materials, ageing time and temperature, along with calcination rate and temperature. It was found that a higher calcination temperature led to a partially crystallized glass with almost a magnitude decrease in specific surface area relative to the other glasses. All Processing routes resulted in highly bioactive glasses according to Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy, which confirmed HCA formation in SBF in as little as 2 h. The majority of ion-exchange occurred within 30 min, facilitating this rapid conversion to bone-like HCA. Interestingly, the partially crystallized glasses (i.e., glass–ceramics) also underwent full conversion to HCA in SBF. Furthermore, ageing time and temperature did not affect the bioactive properties of these glasses, which allow for significantly reduced Processing times. In summary, this study demonstrates that SGBGs can be tailored for targeted tissue engineering applications by varying the sol–gel Processing parameters.
-
Effect of Processing parameters on textural and bioactive properties of Sol-Gel-derived borate glasses
Journal of Materials Science, 2017Co-Authors: William C Lepry, Shiva Naseri, Showan N. NazhatAbstract:A compositional range of recently developed bioactive sol–gel-derived borate glasses (SGBGs) have demonstrated remarkably rapid rates of conversion to hydroxy-carbonated apatite (HCA) in simulated body fluid (SBF). Although the composition of SGBGs did not greatly impact HCA conversion rates, it is still unknown how the sol–gel Processing parameters affect the textural properties and thus bioactivity of the glass. In this study, a borate-substituted Bioglass® “45S5” formulation [(46.1)B2O3-(26.9)CaO-(24.4)Na2O-(2.6)P2O5; mol%] was fabricated using different sol–gel Processing parameters including precursor materials, ageing time and temperature, along with calcination rate and temperature. It was found that a higher calcination temperature led to a partially crystallized glass with almost a magnitude decrease in specific surface area relative to the other glasses. All Processing routes resulted in highly bioactive glasses according to Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy, which confirmed HCA formation in SBF in as little as 2 h. The majority of ion-exchange occurred within 30 min, facilitating this rapid conversion to bone-like HCA. Interestingly, the partially crystallized glasses (i.e., glass–ceramics) also underwent full conversion to HCA in SBF. Furthermore, ageing time and temperature did not affect the bioactive properties of these glasses, which allow for significantly reduced Processing times. In summary, this study demonstrates that SGBGs can be tailored for targeted tissue engineering applications by varying the sol–gel Processing parameters.