The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform
Mark J. Utell - One of the best experts on this subject based on the ideXlab platform.
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Percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin/nude mouse model
Skin pharmacology and applied skin physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
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percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin nude mouse model
Skin Pharmacology and Applied Skin Physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
Grazyna Zareba - One of the best experts on this subject based on the ideXlab platform.
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Percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin/nude mouse model
Skin pharmacology and applied skin physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
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percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin nude mouse model
Skin Pharmacology and Applied Skin Physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
Zemin Xie - One of the best experts on this subject based on the ideXlab platform.
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Anionic non-equilibrium ring-opening polymerization of Octamethylcyclotetrasiloxane (D4) initiated by silazyl-lithiums
Polymer International, 2004Co-Authors: Zhijie Zhang, Zhimin Zheng, Zemin XieAbstract:The initiation and propagation reactions in anionic non-equilibrium polymerization of Octamethylcyclotetrasiloxane (D4) initiated by silazyl-lithiums are investigated. It is found that: both the steric hindrance effect and the electronic effect of the substitutes on the Si atom Si influences the initiation activity of silazyl-lithiums; temperature effect on the propagation rate of D4 increases strongly above 40 °C; the molecular weight distribution of the prepared polysiloxanes widens with time. © 2003 Society of Chemical Industry
Léa Sigot - One of the best experts on this subject based on the ideXlab platform.
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Adsorption of Octamethylcyclotetrasiloxane (D4) on silica gel (SG): Retention mechanism
Microporous and Mesoporous Materials, 2015Co-Authors: Léa Sigot, Gaëlle Ducom, Patrick GermainAbstract:Silica gel (SG) is an efficient adsorbent for the removal of Octamethylcyclotetrasiloxane (D4) - a volatile organic silicon compound present in biogas. Complementary physicochemical characterizations of SG before and after D4 adsorption were performed: specific surface area, porosity, pH measurements, infrared spectroscopy, thermodesorption, thermogravimetry and differential scanning calorimetry. A retention mechanism, based on a combination of hydrogen bonding (at low uptake) and polymerization (at higher uptake) is proposed. This mechanism is able to explain the difficulties of siloxane thermal desorption.
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Adsorption of Octamethylcyclotetrasiloxane on silica gel for biogas purification
Fuel, 2014Co-Authors: Léa Sigot, Gaëlle Ducom, Belkacem Benadda, Claire LabouréAbstract:Biogas can be used as a fuel for electricity conversion. However, volatile organic silicon compounds (including siloxanes) in biogas severely damage combustion engines or solid oxide fuel cells. Three adsorbents of different nature were tested for Octamethylcyclotetrasiloxane (D4) removal and silica gel (SG) proved to be the most efficient. It was shown that SG adsorption capacity is in the order of 250 mgD4/ gSG and the adsorbent bed height has little influence on this adsorption capacity. In the presence of water (relative humidity of 70%), the adsorption capacity was lowered by 90% due to competitive effects and preferential adsorption of water. An increase of the temperature of roughly 20 °C also lowered the adsorption capacity but the decrease was less than 15%. Moreover, SG regeneration by heating was only partial, probably due to siloxane polymerization on SG.
Robert Gelein - One of the best experts on this subject based on the ideXlab platform.
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Percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin/nude mouse model
Skin pharmacology and applied skin physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
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percutaneous absorption studies of Octamethylcyclotetrasiloxane using the human skin nude mouse model
Skin Pharmacology and Applied Skin Physiology, 2002Co-Authors: Grazyna Zareba, Robert Gelein, Paul E. Morrow, Mark J. UtellAbstract:Octamethylcyclotetrasiloxane (D4) has been used for more than 40 years in industrial applications and consumer products, including the personal care industry. D4 possesses many p
