Publications associées à Thermodynamique chimique

Molecular thermodynamics of metabolism: hydration quantities and the equation-of-state approach

Vassily Hatzimanikatis, Meriç Ataman, Noushin Hadadi

The present work is part of a series of papers aiming at a thorough understanding of the thermodynamics of metabolism over a broad range of external conditions. The focus here is on the systematic study of solvation/hydration of a variety of fluids via an ...

Royal Soc Chemistry2016

Molecular thermodynamics of metabolism: quantum thermochemical calculations for key metabolites

Vassily Hatzimanikatis, Meriç Ataman, Noushin Hadadi

The present work is the first of a series of papers aiming at a coherent and unified development of the thermodynamics of metabolism and the rationalization of feasibility analysis of metabolic pathways. The focus in this part is on high-level quantum chem ...

Royal Soc Chemistry2015

Development of a laser-based heating system for in situ synchrotron-based X-ray tomographic microscopy

Michel Rappaz, Marco Stampanoni

Understanding the formation of materials at elevated temperatures is critical for determining their final properties. Synchrotron-based X-ray tomographic microscopy is an ideal technique for studying such processes because high spatial and temporal resolut ...

International Union of Crystallography2012

Experimental DSC-based method to determine glass transition temperature during curing of structural adhesives

Thomas Keller, Anastasios Vassilopoulos, Omar Moussa

A new DSC-based experimental method to efficiently establish the glass transition temperature, Tg, vs. curing degree, α, relationship for structural adhesives was developed. The method approaches the continuous Tg-α relationship with a trilinear curve esta ...

Elsevier2012

Thermocouple Thermal Inertia Effects on Impingement Heat Transfer Experiments Using the Transient Liquid Crystal Technique

Peter Ott, Alexandros Terzis, Bernhard Weigand

The transient liquid crystal technique is widely used for impingement heat transfer experiments. Additionally, due to the difficulty of producing pure temperature steps in the flow, many authors assumed the fluid temperature evolution as a series of step c ...

Institute of Physics2012

The important role of pressure in supercritical fluid process development revealed by reaction calorimetry

Thierry Meyer, Charalampos Mantelis

The technique of reaction calorimetry adapted for use with reactions in supercritical fluids was used to study some safety aspects of the free-radical dispersion polymerization of methyl methacrylate in scCO2. The reaction heat rate profile was found to ch ...

Wiley-Blackwell2009

Order-disorder phase transition and stress-induced diffusion in Au-Cu

Daniele Mari, Robert Schaller, John Hennig

Isothermal mechanical spectroscopy by means of a forced torsion pendulum (measuring internal friction/mechanical loss) was used to study the interplay of long-range atomic order and stress-induced diffusion (Zener relaxation) in Au57%Cu43%. Our results sho ...

2009

Optimization of reaction calorimetry with supercritical fluids: A complete term-by-term analysis of the heat flow equation

Thierry Meyer, Charalampos Mantelis

A complete anal. of the heat flow equation in reaction calorimetry with supercrit. fluids is presented. An esp. developed reaction calorimeter is employed to study the challenges introduced by the supercrit. state of the reaction mixt. and the particularit ...

2008

Free-radical dispersion polymerization of methyl methacrylate in supercritical carbon dioxide: a parametric analysis with reaction calorimetry

Thierry Meyer, Sophie Fortini, Charalampos Mantelis, Raphaël Barbey

In this study, the application of reaction calorimetry, an efficient tool to obtain kinetic and safety data, is presented on the free radical dispersion polymn. of MMA in scCO2. The effect of three major parameters with respect to the reaction evolution ar ...

2007

Dispersion polymerization of methyl methacrylate in supercritical carbon dioxide: control of molecular weight distribution by adjusting particle surface area

Thierry Meyer, Charalampos Mantelis

Expts. of Me methacrylate dispersion polymn. are carried out in a reaction calorimeter using PDMS-mMA (methacrylate-terminated polydimethylsiloxane) as surfactant. Different stabilizer concns. from 0 to 10 wt% with respect to monomer have been considered i ...

2007

Supercritical reaction calorimetry: A novel route to supercritical fluid reaction monitoring

Thierry Meyer, Frédéric Lavanchy, Charalampos Mantelis

Supercrit. fluids (SCFs) were intensively studied in the last decade as alternative, environment-friendly benign reaction solvents. A new anal. technique was derived from a combination of classical heat flow reaction calorimetry and the supercrit. fluid te ...

2005

Development of reaction calorimetry applied to supercritical CO2 and methanol-CO2 critical mixture : -heat transfer, heat flow and hydrodynamics

Frédéric Lavanchy

The combination of reaction calorimetry and supercritical fluids as reactants and/or solvent holds great potential for the optimization of chemical processes using high pressure near-critical and/or supercritical mixtures. The very specific properties of s ...

EPFL2005