Nos tutelles

CNRS

Nom tutelle 1

Nos partenaires

Nom tutelle 2 Nom tutelle 3

Rechercher





Accueil > Institut > Personnel > pages personnelles > Isabelle Pochard

Isabelle Pochard

par Isabelle Pochard -

Maître de conférences, HDR
Image
Institut UTINAM
Équipe Matériaux et Surfaces Fonctionnels
16, Route de Gray
25030 BESANCON Cedex
Téléphone : +33 (0)3 81 66 69 63
Télécopie : + 33 (0)3 81 66 20 33
E-mail : isabelle.pochard chez utinam.cnrs.fr

Parcours

Short biography
Isabelle Pochard was born in Pontarlier (France) in 1972. She obtained her PhD in physical chemistry from University of Franche-Comté (Besançon, France) in 1999, and was working thereafter as a postdoc at the University of Quebec in Trois-Rivières, Center for Research in Pulp and Paper, Canada. In 2000, she became associate professor in the University of Bourgogne (Dijon, France) where she obtained her HDR (docent) in 2012. In 2012-2013, she was a visiting researcher for one year at the Angström Laboratory (Uppsala University, Sweden) in the Nanotechnology and Functional Materials department headed by Maria Strömme. Since fall 2014, she is a researcher at UTINAM laboratory, Besançon (France). She was invited professor for two months at the University of Alberta (Edmonton, Canada) in the group of Pr Jonathan Veinot. Her research interests are focused on the physical chemistry of colloidal particles in aqueous media. She is co-author of 40 publications in peer-reviewed journals and proceedings.

Teaching
For graduated students : quantum chemistry, thermodynamic, kinetics, fluid mechanics, crystallography, inorganic chemistry, solution chemistry
For master students : polyelectrolytes in solution, ionic correlation forces, advanced materials


Thèmes de Recherche
Colloidal chemistry

The huge specific surface area of colloidal particles is responsible for the well-known high reactivity at the particle / liquid interface. Besides, the fields of applications of colloidal systems are widespread. One may cite paints, inks, paper pulp, cement pastes, oil drilling fluids, ceramics, coatings, membranes, sol-gel as industrial applications or water and soil treatments for environmental issues. In this context, my research activities are motivated by the scientific challenge of understanding the physico-chemical phenomena occurring at the interface between a colloidal particle (soft or hard, inorganic or organic) and its dispersing solution (mainly aqueous). We aim at building new materials with outstanding properties. These materials may be composite coatings made of colloidal particles embedded in films or mesoporous materials.


Publications

Peer-reviewed journals
Characterization of magnesium silicate hydrates
E.Bernard, B.Lothenbach, C.Chlique, M.Wyrykowski, A.Dauzères, I.Pochard, C.Cau-dit-coumes
Cement and Concrete Research 116 (2019) 309-330

Alkali binding by magnesium silicate hydrates
E.Bernard, B.Lothenbach, I.Pochard, C.Cau-dit-coumes
Journal of the American Ceramic Society 102(10) (2019) 6322-6336

Amine-functionalised mesoporous magnesium carbonate : dielectric spectroscopy studies of interactions with water and stability
I.Pochard, M.Vall, J.Eriksson, C.Farineau, O.Cheung, S.Frykstrand, K.Welch, M.Strömme
Materials Chemistry and Physics 216 (2018) 332-338

Magnesium and Calcium Silicate Hydrates, Part I : Investigation of the possible magnesium incorporation in calcium silicate hydrate (C-S-H) and of the calcium in magnesium silicate hydrate (M-S-H)
E.Bernard, B.Lothenbach, C.Cau-dit-coumes, C.Chlique, A.Dauzeres, I.Pochard
Applied Geochemistry 89 (2018) 229-242

Elastic response of cementitious gels to polycation addition
F.Brunel, I.Pochard, M.Turesson, S.Gauffinet, C.Labbez
ACS Omega 2 (2017) 2148-2158

Formation of Magnesium Silicate Hydrate (M-S-H)
E.Bernard, B.Lothenbach, D.Rentsch, I.Pochard, A.Dauzeres
Physics and Chemistry of the Earth 99 (2017) 142-157

Effect of magnesium on calcium silicate hydrate (C-S-H)
E.Bernard, B.Lothenbach, F.Le Goff, I.Pochard, A.Dauzeres
Cement and Concrete Research 97 (2017) 61-72

Structure and yielding of colloidal silica gels varying the range of interparticle interactions
F.Brunel, I.Pochard, S.Gauffinet, M.Turesson, C.Labbez
The Journal of Physical Chemistry B 120 (2016) 5777-5785

Dielectric spectroscopy study of water behavior in calcined Upsalite : a mesoporous magnesium carbonate without organic surface groups
I.Pochard, S. Frykstrand, J.Eriksson, S.Gustafsson, K.Welch, M.Strömme
The Journal of Physical Chemistry C 119 (2015) 15680-15688

Water and ion transport in ultra-adsorbing porous magnesium carbonate studied by dielectric spectroscopy
I.Pochard, S.Frykstrand, O.Ahlström, J.Forsgren, M.Strömme
Journal of Applied Physics 115 (2014) 044306

Retention of alkali ions by hydrated low-pH cements : mechanisms and Na+/K+ selectivity
T.Bach, E.Chabas, I.Pochard, C.Cau-dit-coumes, J.Haas, F.Frizon, A.Nonat
Cement and Concrete Research 51 (2013) 14-21

Chemistry of the calcite/water interface : influence of sulfate ions and consequences in terms of cohesion forces
S.Pourchet, I.Pochard, F.Brunel, D.Perrey
Cement and Concrete Research 52 (2013) 22-30 (pdf)

Influence of temperature on the hydration products of low-pH cements
T.Bach, C.Cau-dit-coumes, I.Pochard, C.Mercier, B. Revel, A.Nonat
Cement and Concrete Research 42(6) (2012) 805-817

27Al and 29Si solid-state NMR characterization of a calcium alumino-silicate hydrate (C-A-S-H)
X.Pardal, F.Brunet, T.Charpentier, I.Pochard, A.Nonat
Inorganic Chemistry 51(3) (2012) 1827-1836

Effect of the repartition of the PEG side chains on the adsorption and dispersion behaviours of PCP in presence of sulfate
S.Pourchet, S.Liautaud, D.Rinaldi, I.Pochard
Cement and Concrete Research 42 (2012) 431-439

C-S-H/solution interface : experimental and Monte Carlo studies
C.Labbez, I.Pochard, B.Jönsson, A.Nonat
Cement and Concrete Research 41 (2011) 161-168

Ettringite surface chemistry : interplay of electrostatic and ion specificity
M.Medala, C.Labbez, I.Pochard, A.Nonat
Journal of Colloid and Interface Science, 354 (2011) 765-770

The effect of polycations on early cement paste
I.Pochard, C.Labbez, A.Nonat, H.Vija, B.Jönsson
Cement and Concrete Research 40 (2010) 1488-1494 (pdf)

Engineering photocatalytic cements : understanding TiO2 surface chemistry to control and modulate photocatalytic performances
A.Folli, I.Pochard, A.Nonat, U.H.Jakobsen, A.M.Shepherd, D.E.Macphee
Journal of American Ceramic Society 93(10) (2010) 3360-3369 (pdf)

Experimental study of Si-Al substitution in calcium-silicate-hydrate (C-S-H) prepared under equilibrium conditions
X.Pardal, I.Pochard, A.Nonat
Cement and Concrete Research 39 (8) (2009) 637-643

Experimental and theoretical evidence of overcharging of calcium silicate hydrate
C.Labbez, A.Nonat, I.Pochard, B.Jönsson
Journal of Colloid and Interface Science 309(2) (2007) 303-307

Surface charge density and electrokinetic potential of highly charged minerals : experiments and Monte Carlo simulations on calcium silicate hydrate
C.Labbez, B.Jönsson, I.Pochard, A.Nonat, B.Cabane
Journal of Physical Chemistry B 110(18) (2006) 9219-9230

Nanoscale experimental investigation of particle interactions at the origin of the cohesion of cement
C.Plassard, E.Lesniewska, I.Pochard, A.Nonat
Langmuir 21(16) (2005) 7263-7270

Investigation of the surface structure and elastic properties of calcium silicate hydrates at the nanoscale
C.Plassard, E.Lesniewska, I.Pochard, A.Nonat
Ultramicroscopy 100(3-4) (2004) 331-338

Surface charge, effective charge and dispersion/aggregation properties of nanoparticles
I.Pochard, J.P.Boisvert, J.Persello, A.Foissy
Polymer International 53 (2003) 619-624

Investigation of the structural composition and mechanical properties of calcium silicate hydrate nanoparticles
C.Plassard, E.Lesniewska, J.P.Perez, S. Gauffinet, I.Pochard, A.Nonat
Annales de chimie-Sciences des matériaux 28(1) (2003) 59-67

Influence of the counter-ion on the effective charge of polyacrylic acid in dilute conditions
J.P.Boisvert, A.Malgat, I.Pochard, C.Daneault
Polymer 43 (2002) 141-148

Adsorption of baryum and calcium chloride onto negatively-charged hematite particles
I.Pochard, R.Denoyel, A.Foissy, P.Couchot
Journal of Colloid and Interface Science 255 (2002) 27-35

Donnan equilibrium and the effective charge of sodium poly(acrylate)
I.Pochard, J.P.Boisvert, C.Daneault
Colloid and Polymer Science 279 (2001) 850-857

Conductometric and microcalorimetric analysis of the alkaline-earth/alkali-metal ion exchange onto poly(acrylic) acid
I.Pochard, A.Foissy, P.Couchot
Colloid and Polymer Science 277 (1999) 818-826

Potentiometric and conductometric analyses of the binding of baryum ions with alkali polyacrylate
I.Pochard, A.Foissy, P.Couchot
Colloid and Polymer Science 276 (1998) 1088-1094

Counterions contributions in polyelectrolyte adsorption
I.Pochard, P.Couchot, C.Geffroy, A.Foissy, J.Persello
Revue de l’Institut Français du Pétrole 52(2) (1997) 251-253

Conference papers
Anion uptake by calcium silicate hydrate
G.Plusquellec, I.Pochard, A.Nonat
Proceeding of the 32nd Cement and Concrete Science Conference, Belfast, UK, 17-18 September 2012

C-A-S-H synthesis and thermodynamic modelling in the CaO-SiO2-Al2O3-H2O system
J.Haas, I.Pochard, A.Nonat
Proceeding of the 32nd Cement and Concrete Science Conference, Belfast, UK, 17-18 September 2012

Retention of alkalis by hydrated low-pH cements designed for underground radioactive waste repositories
T.Bach, C.Cau-dit-coumes, I.Pochard, A.Nonat
Proceeding of the 13th International Congress on the Chemistry of Cement, Madrid, Spain, 4-8 July 2011

Model for equilibrium surface chemistry and interface properties of hdyrates in the CaO-SiO2-Al2O3-H2O system
J.Haas, I.Pochard, A.Nonat
Proceeding of the 13th International Congress on the Chemistry of Cement, Madrid, Spain, 4-8 July 2011

Investigations of the interacting forces between calcium silicate hydrate (C-S-H) particles : influence of sulphate sorption on C-S-H
M.Medala, I.Pochard, C.Labbez, A.Nonat
Proceeding of the Cement and Concrete Science Conference, Leeds, UK, 8-9 September 2009

Colloidal behavior of C-S-H in cement paste
C.Labbez, I.Pochard, B.Jönsson, A.Nonat
Proceedings of the ConMod (Concrete Modelling) (2010) Lausanne, Switzerland

Adsorption of sulfate ions on negatively charged surfaces
C.Labbez, M.Medala, I.Pochard, A.Nonat
Proceedings of the 7th Liquid Matter Conference (2008) Lund, Sweden

Thermodynamic investigations of calcium silicate hydrate/aluminium equilibria
X.Pardal, I.Pochard, A.Nonat
Annales de chimie, science des matériaux 33 (2008) 267-274

Thermodynamic and structural study of the substitution of silicate by aluminate in calcium silicate hydrate
X.Chen, I.Pochard, A.Nonat
Proceeding of the 12th International Congress on the Chemistry of Cement, Montreal, Canada, 8-13 July 2007

Intrinsic elastic properties of calcium silicate hydrates by nanoindentation
I.Pochard, C.Plassard, E.Lesniewska, A.Nonat
Proceeding of the 12th International Congress on the Chemistry of Cement, Montreal, Canada, 8-13 July 2007

Nanoscale investigation of particle interactions at the origin of the cohesion of cement
I.Pochard, C.Labbez, C.Plassard, E.Lesniewska, B.Jönsson, A.Nonat
Proceeding of the 12th International Congress on the Chemistry of Cement, Montreal, Canada, 8-13 July 2007

The surface structure of calcium silicate hydrate
C.Plassard, C.Labbez, I.Pochard, E.Lesniewska, A.Nonat
Ceramika 92 (2005) 309-317

Conference as an invited speaker
Nanoparticles, mesoporous materials and composite films
University of Alberta (Canada), 2017, June 27th

Exploring the mystery of cement by dielectric spectroscopy
Solid State Physics Department, The Angström Labratory
University of Uppsala (Sweden), 2012, February 26th

Particle aggregation and cement cohesion
1st French workshop on Particles, Molecules and Surfaces
University of Franche-Comté – Besançon (France), 2011, April 1st

Role of the ions in the charge and interaction processes of colloidal particles
In honor of Professeur Alain FOISSY, organised by the French Chemical Society University of Franche-Comté – Besançon (France), 2010, January 15th

  •