Wyniki wyszukiwania dla: Emmanuel Mignard

Pozycje od 1 do 14 spośród 14 wyników

artykuł

Supercritical continuous precipitation polymerization of acrylic acid in a droplet-based millifluidic device

Hongyu Chen-Jolly, Pierre Guillot, Emmanuel Mignard

Chemical Engineering Journal > 2018 > 334 > C > 389-399

In this work, a high pressure droplet-based millifluidic device was developed to achieve the continuous precipitation polymerization of acrylic acid in a green reaction medium: a supercritical mixture of 10 wt% ethanol in CO₂ (15/19.5 MPa and 75 °C). To avoid clogging the tubular reactor of 762 µm ID, a segmented flow of an aqueous solution of monomer dispersed in the supercritical mixture (containing...

artykuł

Measurement Bias on Nanoparticle Size Characterization by Asymmetric Flow Field-Flow Fractionation Using Dynamic Light-Scattering Detection

Julien Gigault, Emmanuel Mignard, Hind El Hadri, Bruno Grassl

Chromatographia > 2017 > 80 > 2 > 287-294

In this work, we highlight the influence of the particle–particle interaction on the retention behavior in asymmetric flow field-flow fractionation (A4F) and the misunderstanding considering the size determination by a light-scattering detector (static and dynamic light scattering) by comparing fullerene nanoparticles to similar sized polystyrene nanoparticle standards. The phenomena described here...

artykuł

Droplet-based millifluidic device under microwave irradiation: Temperature measurement and polymer particle synthesis

Oihan Garagalza, Charlotte Petit, Emmanuel Mignard, Flavie Sarrazin, więcej

Chemical Engineering Journal > 2017 > 308 > C > 1105-1111

The microwave irradiation and the droplet-based millifluidic process are coupled to explore the microwave heating of individual droplets in polymer chemistry. The continuous phase is a microwave-inert oil while the reactive droplets contain hydrosoluble monomer and initiator in an aqueous medium. Microwaves affect directly and preferentially the molecules within the reactive droplets. Addressing the...

artykuł

On the phase behavior of the quaternary system acrylic acid-water-ethanol-CO2 by in situ infrared spectrometry

Hongyu Chen-Jolly, Pierre Guillot, Emmanuel Mignard, Thierry Tassaing

The Journal of Supercritical Fluids > 2016 > 116 > C > 117-125

The phase equilibrium of acrylic acid (AA)/carbon dioxide (CO₂) as well as mixtures containing water, AA, CO₂ and/or ethanol (EtOH) has been investigated. An in-situ infrared analysis method combining FTIR and ATR-IR spectrometry techniques has been used to obtain concentrations of each component in both phases, i.e. CO₂-rich and water-rich ones, as a function of pressure and temperature. Measurements...

artykuł

Fluorosurfactants for applications in catalysis

Quentin Jochyms, Emmanuel Mignard, Jean-Marc Vincent

Journal of Fluorine Chemistry > 2015 > 177 > Complete > 11-18

Due to the specific physical and chemical properties of perfluorinated chains, i.e. stiffness, increased size and extreme hydrophobicity/lipophobicity, fluorosurfactants exhibit enhanced surfactant properties. Consequently, fluorosurfactants have found wide applications in consumer products, industries and research laboratories. In this article, the use of fluorosurfactants for applications in catalytic...

artykuł

Investigating Acrylic Acid Polymerization by Using a Droplet‐Based Millifluidics Approach

Nicolas Lorber, Bertrand Pavageau, Emmanuel Mignard

Macromolecular Symposia > 296 > 1 > 203 - 209

We present herein the basic concept of droplet‐based millifluidics as an original tool to monitor polymerization kinetics. As a proof of concept, we use aqueous droplets of acrylic acid mixed with sodium persulfate at various pH as polymerization microreactor models. According to the pH and the temperature, completion could be obtained within a minute. Despite the fact that this reaction is quite...

artykuł

Droplet-Based Millifluidics as a New Miniaturized Tool to Investigate Polymerization Reactions

Nicolas Lorber, Bertrand Pavageau, Emmanuel Mignard

Macromolecules > 2010 > 43 > 13 > 5524 - 5529

artykuł

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

Clément Lansalot-Matras, Fabien Bonnette, Emmanuel Mignard, Olivier Lavastre

Journal of Organometallic Chemistry > 2008 > 693 > 3 > 393-398

A library of N-tripodal ligands, based on a central nitrogen atom connected to three different functionalized arms, was investigated via a parallel approach for the polymerization of methyl-methacrylate (MMA) in presence of late transition metal salts. Copper salts CuCl ₂ and Cu(OAc) ₂ in combination with N-(2-furanylmethyl)-N-(1-3,5-dimethyl-1H-pyrazolylmethyl)-N- (phenylmethyl)amine...

artykuł

Direct Measurement of Chain Transfer during Controlled Radical Polymerization

Michael F. Drenski, Emmanuel Mignard, Wayne F. Reed

Macromolecules > 2006 > 39 > 24 > 8213 - 8215

artykuł

Kinetics and Molar Mass Evolution during Atom Transfer Radical Polymerization of n -Butyl Acrylate Using Automatic Continuous Online Monitoring

Emmanuel Mignard, Jean-François Lutz, Thierry Leblanc, Krzysztof Matyjaszewski, więcej

Macromolecules > 2005 > 38 > 23 > 9556 - 9563

artykuł

Simultaneous in-Situ Monitoring of Parallel Polymerization Reactions Using Light Scattering; A New Tool for High-Throughput Screening

Michael F. Drenski, Emmanuel Mignard, Alina M. Alb, Wayne F. Reed

Journal of Combinatorial Chemistry > 2004 > 6 > 5 > 710 - 716

artykuł

In Situ Time-Dependent Signatures of Light Scattered from Solutions undergoing Polymerization Reactions

Alina M. Alb, Emmanuel Mignard, Michael F. Drenski, Wayne F. Reed

Macromolecules > 2004 > 37 > 7 > 2578 - 2587

artykuł

Online Monitoring of Controlled Radical Polymerization: Nitroxide-Mediated Gradient Copolymerization

Emmanuel Mignard, Thierry Leblanc, Denis Bertin, Olivier Guerret, więcej

Macromolecules > 2004 > 37 > 3 > 966 - 975

artykuł

Synthesis and Characterization of Star Copolymers Consisting of Fullerene and Conjugated Polyphenylene: 6- star -C ₆₀ [styrene−poly(1,4-phenylene)- block -polystyrene] and 6- star -C ₆₀ [polystyrene- block -poly(1,4-phenylene)]

Emmanuel Mignard, Roger C. Hiorns, Bernard François

Macromolecules > 2002 > 35 > 16 > 6132 - 6141

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ACRYLIC ACID (2)
POLYMERIZATION (2)
SUPERCRITICAL CO2 (2)
ACRYLIC ACID FREE RADICAL POLYMERIZATION (1)
AMPHIPHILIC CATALYST (1)
ASYMMETRIC FLOW FIELD-FLOW FRACTIONATION (1)
CATALYSIS (1)
CONTINUOUS PROCESS (1)
COPPER BASED-CATALYST (1)
DISPERSED MEDIA (1)
DROPLET-BASED MILLIFLUIDICS (1)
DROPLET-BASED PROCESS (1)
DROPLETS AS MICROREACTORS (1)
EMULSIONS (1)
ETHANOL (1)
FLUOROSURFACTANT (1)
FLUOROUS (1)
FULLERENES (1)
INFRARED SPECTROMETRY (1)
INLINE MONITORING (1)
LIGHT SCATTERING (1)
MICELLAR SYSTEMS (1)
MICROWAVE-ASSISTED POLYMERIZATION (1)
MILLIFLUIDICS (1)
MMA (1)
NANOPARTICLES (1)
PHASE EQUILIBRIA (1)
PRECIPITATION POLYMERIZATION (1)
RAMAN SPECTROSCOPY (1)
SIZE CHARACTERIZATION (1)
SYNDIOTACTICITY (1)
TEMPERATURE MEASUREMENT (1)
TRIPODAL LIGANDS (1)
WATER (1)
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Zbiór danych

ACS (7)
Elsevier (5)
Springer (1)
Wiley (1)

INFONA - portal komunikacji naukowej

Wyniki wyszukiwania dla: Emmanuel Mignard

Supercritical continuous precipitation polymerization of acrylic acid in a droplet-based millifluidic device

Measurement Bias on Nanoparticle Size Characterization by Asymmetric Flow Field-Flow Fractionation Using Dynamic Light-Scattering Detection

Droplet-based millifluidic device under microwave irradiation: Temperature measurement and polymer particle synthesis

On the phase behavior of the quaternary system acrylic acid-water-ethanol-CO2 by in situ infrared spectrometry

Fluorosurfactants for applications in catalysis

Investigating Acrylic Acid Polymerization by Using a Droplet‐Based Millifluidics Approach

Droplet-Based Millifluidics as a New Miniaturized Tool to Investigate Polymerization Reactions

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

Direct Measurement of Chain Transfer during Controlled Radical Polymerization

Kinetics and Molar Mass Evolution during Atom Transfer Radical Polymerization of n -Butyl Acrylate Using Automatic Continuous Online Monitoring

Simultaneous in-Situ Monitoring of Parallel Polymerization Reactions Using Light Scattering; A New Tool for High-Throughput Screening

In Situ Time-Dependent Signatures of Light Scattered from Solutions undergoing Polymerization Reactions

Online Monitoring of Controlled Radical Polymerization: Nitroxide-Mediated Gradient Copolymerization

Synthesis and Characterization of Star Copolymers Consisting of Fullerene and Conjugated Polyphenylene: 6- star -C ₆₀ [styrene−poly(1,4-phenylene)- block -polystyrene] and 6- star -C ₆₀ [polystyrene- block -poly(1,4-phenylene)]

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Wyniki wyszukiwania dla: Emmanuel Mignard

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