The Experts below are selected from a list of 15 Experts worldwide ranked by ideXlab platform
Ac Taylor - One of the best experts on this subject based on the ideXlab platform.
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The properties and suitability of commercial bio-based epoxies for use in fiber-reinforced composites
'Wiley', 2020Co-Authors: Js Terry, Ac TaylorAbstract:Environmental concerns about fiber composites are leading manufacturers to consider bio‐based alternatives to petroleum‐derived epoxies. Such a substitution is hindered by a lack of information, so commercially available bio‐based epoxy systems have been compared, their mechanical properties measured, and fiber composites produced by vacuum infusion. Most high bio‐based content resins for infusion use conventional curing agents. Bio‐based content is generally added using Epicerol, but also other bio‐based precursors. A diglycidyl ether of bisphenol A system produced using Epicerol achieves 20 % bio‐based content, but achieves higher contents when Epicerol is used in diluents. Fully bio‐based monomers can be deleterious to the mechanical properties and glass transition temperature (Tg), so are used sparingly. The most‐promising systems (28 % to 43 % bio‐based) compare well to conventional epoxies, possessing good strength, stiffness, toughness, and a reasonable Tg. These partially bio‐based epoxies offer an immediate lower‐carbon alternative for vacuum‐infused composites in marine, sports equipment, and wind energy
Raffaele Cucciniello - One of the best experts on this subject based on the ideXlab platform.
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bio propylene glycol as value added product from Epicerol process
Sustainable Chemistry and Pharmacy, 2017Co-Authors: Maria Ricciardi, Daniele Cespi, Maurizio Celentano, A Genga, Cosimino Malitesta, Antonio Proto, Carmine Capacchione, Raffaele CuccinielloAbstract:Abstract The production of chemicals from bio-based feedstocks is an emerging field of research in both industrial and academic communities. Here we present the synthesis of propylene glycol through catalytic hydrogenolysis of glycidol, obtained using a side-stream from the bio-based epichlorohydrin production plant, over Pd/C catalyst. In particular, we show the prominent effect of the acidic resin Amberlyst-15 in the selective and quantitative conversion of glycidol that permits to reach a TOF value of 162 h −1 . Propylene glycol is obtained with high yields and selectivity (> 99%) in only 1 h under mild reaction conditions. The effect of solvent is also investigated giving interesting results on the reaction selectivity. The catalytic system (Pd/C + Amberlyst-15) shows a good recyclability also after seven reaction cycles reaching high performances in term of conversion and selectivity. This allowed minimizing the amount of waste and enhancing the efficiency of the whole system.
Js Terry - One of the best experts on this subject based on the ideXlab platform.
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The properties and suitability of commercial bio-based epoxies for use in fiber-reinforced composites
'Wiley', 2020Co-Authors: Js Terry, Ac TaylorAbstract:Environmental concerns about fiber composites are leading manufacturers to consider bio‐based alternatives to petroleum‐derived epoxies. Such a substitution is hindered by a lack of information, so commercially available bio‐based epoxy systems have been compared, their mechanical properties measured, and fiber composites produced by vacuum infusion. Most high bio‐based content resins for infusion use conventional curing agents. Bio‐based content is generally added using Epicerol, but also other bio‐based precursors. A diglycidyl ether of bisphenol A system produced using Epicerol achieves 20 % bio‐based content, but achieves higher contents when Epicerol is used in diluents. Fully bio‐based monomers can be deleterious to the mechanical properties and glass transition temperature (Tg), so are used sparingly. The most‐promising systems (28 % to 43 % bio‐based) compare well to conventional epoxies, possessing good strength, stiffness, toughness, and a reasonable Tg. These partially bio‐based epoxies offer an immediate lower‐carbon alternative for vacuum‐infused composites in marine, sports equipment, and wind energy
Maria Ricciardi - One of the best experts on this subject based on the ideXlab platform.
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bio propylene glycol as value added product from Epicerol process
Sustainable Chemistry and Pharmacy, 2017Co-Authors: Maria Ricciardi, Daniele Cespi, Maurizio Celentano, A Genga, Cosimino Malitesta, Antonio Proto, Carmine Capacchione, Raffaele CuccinielloAbstract:Abstract The production of chemicals from bio-based feedstocks is an emerging field of research in both industrial and academic communities. Here we present the synthesis of propylene glycol through catalytic hydrogenolysis of glycidol, obtained using a side-stream from the bio-based epichlorohydrin production plant, over Pd/C catalyst. In particular, we show the prominent effect of the acidic resin Amberlyst-15 in the selective and quantitative conversion of glycidol that permits to reach a TOF value of 162 h −1 . Propylene glycol is obtained with high yields and selectivity (> 99%) in only 1 h under mild reaction conditions. The effect of solvent is also investigated giving interesting results on the reaction selectivity. The catalytic system (Pd/C + Amberlyst-15) shows a good recyclability also after seven reaction cycles reaching high performances in term of conversion and selectivity. This allowed minimizing the amount of waste and enhancing the efficiency of the whole system.
A Genga - One of the best experts on this subject based on the ideXlab platform.
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bio propylene glycol as value added product from Epicerol process
Sustainable Chemistry and Pharmacy, 2017Co-Authors: Maria Ricciardi, Daniele Cespi, Maurizio Celentano, A Genga, Cosimino Malitesta, Antonio Proto, Carmine Capacchione, Raffaele CuccinielloAbstract:Abstract The production of chemicals from bio-based feedstocks is an emerging field of research in both industrial and academic communities. Here we present the synthesis of propylene glycol through catalytic hydrogenolysis of glycidol, obtained using a side-stream from the bio-based epichlorohydrin production plant, over Pd/C catalyst. In particular, we show the prominent effect of the acidic resin Amberlyst-15 in the selective and quantitative conversion of glycidol that permits to reach a TOF value of 162 h −1 . Propylene glycol is obtained with high yields and selectivity (> 99%) in only 1 h under mild reaction conditions. The effect of solvent is also investigated giving interesting results on the reaction selectivity. The catalytic system (Pd/C + Amberlyst-15) shows a good recyclability also after seven reaction cycles reaching high performances in term of conversion and selectivity. This allowed minimizing the amount of waste and enhancing the efficiency of the whole system.