The Experts below are selected from a list of 186 Experts worldwide ranked by ideXlab platform
Hong Dong - One of the best experts on this subject based on the ideXlab platform.
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the physicochemical properties of 1 3 5 trimethyl 1 3 5 tris 3 3 3 trifluoropropyl Cyclotrisiloxane with various aromatic hydrocarbons at t 308 15 to 323 15 k
The Journal of Chemical Thermodynamics, 2016Co-Authors: Hong DongAbstract:Abstract The density and refractive index were determined for four binary mixtures of 1,3,5-trimethyl-1,3,5-tris(3,3,3-trifluoropropyl)Cyclotrisiloxane with nitrobenzene, ethylbenzene, anisole and tert-butylbenzene at different temperatures T = (308.15, 313.15, 318.15 and 323.15) K and atmospheric pressure using a DMA4500/RXA170 combined system. The excess molar volume, partial excess volume at infinite dilution, isobaric coefficient of thermal expansion, excess refraction indices, Lorentz–Lorenz molar refraction and the deviation in molar refraction have been calculated using these data. The results have been incorporated into the Redlich–Kister equation and used to estimate the binary interaction parameters and standard deviations. The values of partial excess volume at infinite dilution and excess refraction indices for the four binary systems at different temperatures were calculated using the adjustable parameters of the Redlich–Kister smoothing equation. The factors that affect these excess quantities have been discussed.
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Volumetric and Refractive Properties of the Mixtures of 1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane with Various Organosilicon Compounds at T = (308.15 to 328.15) K
2016Co-Authors: Hong DongAbstract:The density and refractive index were determined for four binary mixtures of 1,1,3,3-tetramethyl-1,3-diphenyldisiloxane with 2,4,6,8-tetramethylcyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, 1,3,5-trimethyl-1,3,5-tris(3,3,3-trifluoropropyl)Cyclotrisiloxane, and 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane at different temperatures (T = 308.15, 313.15, 318.15 323.15 and 328.15 K) and atmospheric pressure using a DMA4500/RXA170 combined system. The excess molar volume, partial excess volume at infinite dilution, isobaric coefficient of thermal expansion, excess refraction indices, Lorentz–Lorenz molar refraction, and the deviation in molar refraction have been calculated using these data. The results have been incorporated into the Redlich–Kister equation and used to estimate the binary interaction parameters and standard deviation. The values of partial excess volume at infinite dilution and excess refraction indices for the four binary systems at different temperatures were calculated using the adjustable parameters of the Redlich–Kister smoothing equation. The factors that affect these excess quantities have been discussed
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the mixing properties of 1 3 5 trimethyl 1 3 5 tris 3 3 3 trifluoropropyl Cyclotrisiloxane with various organosilicon compounds at different temperatures
The Journal of Chemical Thermodynamics, 2015Co-Authors: Yindi Zhang, Hong DongAbstract:Abstract The density and refractive index were determined for four binary mixtures of 1,3,5-trimethyl-1,3,5-tris(3,3,3-trifluoropropyl) Cyclotrisiloxane with octamethyl-cyclotetrasiloxane, hexamethyldisiloxane, 2,4,6,8-tetramethyl-cyclotetrasiloxane and 2,4,6,8-tetramethyl-2,4,6,8-tetraethenylcyclotetrasiloxane at different temperatures T = (308.15, 313.15, 318.15, 323.15 and 328.15) K and atmospheric pressure using a DMA4500/RXA170 combined system. The excess molar volume, partial excess volume at infinite dilution, isobaric coefficient of thermal expansion, excess refraction indices, Lorentz–Lorenz molar refraction and the deviation in molar refraction have been calculated using this data. The results have been incorporated into the Redlich–Kister equation and used to estimate the binary interaction parameters and standard deviation. The values of partial excess volume at infinite dilution and excess refraction indices for the four binary systems at different temperatures were calculated using the adjustable parameters of the Redlich–Kister smoothing equation. The factors that affect these excess quantities are discussed.
Patrick Hemery - One of the best experts on this subject based on the ideXlab platform.
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anionic polymerization of 1 3 5 tris trifluoropropylmethyl Cyclotrisiloxane f3 in miniemulsion
Macromolecules, 2001Co-Authors: M Barrere, Catherine Maitre, Marieanne Dourges, Patrick HemeryAbstract:The synthesis of poly(trifluoropropylmethyl)siloxane (PTFPMS) by anionic ring-opening polymerization of 1,3,5-tris(trifluoropropylmethyl)Cyclotrisiloxane (F3) was studied in miniemulsion using didodecyldimethylammonium bromide (DDDBr) as emulsifier and sodium hydroxide as initiator. This new process of polymerization produced well-defined α,ω-dihydroxylated polymer in very high yields and with molar masses ranging from 2000 to 30 000 g mol-1. A kinetic study showed that polymerization occurs in two stages. During the first stage, which corresponds to the anionic kinetically controlled ring-opening polymerization of F3, the maximum nonequilibrium yield is close to 100%. The second stage involves condensation and backbiting reactions. The delay between these steps offers a broad “termination window” for achieving high polymer yield.
Guoping Cai - One of the best experts on this subject based on the ideXlab platform.
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synthesis of α ω bis epoxy oligo 1 h 1 h 2 h 2 h perfluoroalkyl siloxane s and properties of their photo acid cross linked films
Chemistry of Materials, 2004Co-Authors: Melissa A Grunlan, Nam S Lee, Guoping Cai, Thomas M Gadda, Joseph M Mabry, Florian Mansfeld, Esra Kus, Dean E Wendt, Gregory L Kowalke, John A FinlayAbstract:Low-viscosity oligomers 1,9-bis[2‘-(4-cyclohexenyl-1,2-epoxy)ethyl]-1,1,3,5,7,9,9-heptamethyl-3,5,7-tris(1‘H,1‘H,2‘H,2‘H-perfluorooctyl)pentasiloxane (VII), 1,9-bis[2‘-(4-cyclohexenyl-1,2-epoxy)ethyl]-1,1,3,5,7,9,9-heptamethyl-3,5,7-tris(3‘,3‘,3‘-trifluoropropyl)pentasiloxane (VIII), and 1,9-bis[2‘-(4-cyclohexenyl-1,2-epoxy)ethyl]decamethylpentasiloxane (IX) have been prepared by Pt-catalyzed hydrosilylation reactions of 4-vinylcyclohexene-1,2-epoxide with 1,9-dihydrido-1,1,3,5,7,9,9-heptamethyl-3,5,7-tris(1‘H,1‘H,2‘H,2‘H-perfluorooctyl)pentasiloxane (IV), 1,9-dihydrido-1,1,3,5,7,9,9-heptamethyl-3,5,7-tris(3‘,3‘,3‘-trifluoropropyl)pentasiloxane (V), and 1,9-dihydridodecamethylpentasiloxane (VI), respectively. IV−VI were prepared by the triflic-acid-catalyzed ring-opening of 1,3,5-trimethyl-1,3,5-tris(1H,1H,2H,2H-perfluorooctyl)Cyclotrisiloxane (I), 1,3,5-trimethyl-1,3,5-tris(3‘,3‘,3‘-trifluoropropyl)cyclo- trisiloxane (II), and hexamethylCyclotrisiloxane (D3) (III), respectively, in 1,1,3,3-tetramethyldis...
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synthesis of polymethyl trimethylsiloxy siloxane by anionic ring opening polymerization of 1 3 5 trimethyl 1 3 5 tris trimethylsiloxy Cyclotrisiloxane
Macromolecules, 2000Co-Authors: Guoping Cai, William P WeberAbstract:Polymethyl(trimethylsiloxy)siloxane, the first linear polysiloxane in which each silicon atom of the polymer backbone is a trifunctional RSiO3/2 (T) unit, has been prepared by anionic ring-opening polymerization of 1,3,5-trimethyl-1,3,5-tris(trimethylsiloxy)Cyclotrisiloxane (I).
William P Weber - One of the best experts on this subject based on the ideXlab platform.
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synthesis of polymethyl trimethylsiloxy siloxane by anionic ring opening polymerization of 1 3 5 trimethyl 1 3 5 tris trimethylsiloxy Cyclotrisiloxane
Macromolecules, 2000Co-Authors: Guoping Cai, William P WeberAbstract:Polymethyl(trimethylsiloxy)siloxane, the first linear polysiloxane in which each silicon atom of the polymer backbone is a trifunctional RSiO3/2 (T) unit, has been prepared by anionic ring-opening polymerization of 1,3,5-trimethyl-1,3,5-tris(trimethylsiloxy)Cyclotrisiloxane (I).
Yindi Zhang - One of the best experts on this subject based on the ideXlab platform.
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the mixing properties of 1 3 5 trimethyl 1 3 5 tris 3 3 3 trifluoropropyl Cyclotrisiloxane with various organosilicon compounds at different temperatures
The Journal of Chemical Thermodynamics, 2015Co-Authors: Yindi Zhang, Hong DongAbstract:Abstract The density and refractive index were determined for four binary mixtures of 1,3,5-trimethyl-1,3,5-tris(3,3,3-trifluoropropyl) Cyclotrisiloxane with octamethyl-cyclotetrasiloxane, hexamethyldisiloxane, 2,4,6,8-tetramethyl-cyclotetrasiloxane and 2,4,6,8-tetramethyl-2,4,6,8-tetraethenylcyclotetrasiloxane at different temperatures T = (308.15, 313.15, 318.15, 323.15 and 328.15) K and atmospheric pressure using a DMA4500/RXA170 combined system. The excess molar volume, partial excess volume at infinite dilution, isobaric coefficient of thermal expansion, excess refraction indices, Lorentz–Lorenz molar refraction and the deviation in molar refraction have been calculated using this data. The results have been incorporated into the Redlich–Kister equation and used to estimate the binary interaction parameters and standard deviation. The values of partial excess volume at infinite dilution and excess refraction indices for the four binary systems at different temperatures were calculated using the adjustable parameters of the Redlich–Kister smoothing equation. The factors that affect these excess quantities are discussed.
