GRAU, Etienne; BROYER, Jean-Pierre; BOISSON, Christophe; SPITZ, Roger; MONTEIL, Vincent

doi:10.1039/c004447d

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GRAU, Etienne

Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers

BROYER, Jean-Pierre
Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 [C2P2]

BOISSON, Christophe
Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 [C2P2]

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Physical Chemistry Chemical Physics. 2010, vol. 12, n° 37, p. 11665-11669

Royal Society of Chemistry

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Free radical polymerization of ethylene in an intermediate pressure and temperature range (P(ethylene) < 250 bar and 50 degrees C < T < 90 degrees C) in the presence of an organic solvent has been studied. Under selected conditions ( P, T) and according to the amount of organic solvent added, either a supercritical monophasic or a biphasic medium is obtained. In the case of a biphasic medium, polymerization occurred in the liquid phase in which radical initiator and ethylenes are dissolved. The transition between a monophasic to a biphasic medium has been predicted using thermodynamic calculations and has been related to experimental observations such as the dependence of polymerization activity versus solvent volume.< Leer menos

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solubility

Polyethylene

ethylene

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Supercritical behavior in free radical polymerization of ethylene in the medium pressure range

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