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TRAN Yvette


Assistant Professor

ESPCI

_ Office H1.09

Tél. : 33 (0) 1 40 79 58 12

yvette.tran@espci.fr

RESEARCH AREAS

My research activities concern thin films of hydrosoluble polymers such as brushes and networks. In general, the polymer layers studied are chemically grafted on solid substrates. They are neutral polymers, polyelectrolytes or polyampholytes. I am interested by two geometries of layers : linear chains grafted on the surface (called brushes) and networks where chains are connected by covalent bonds. In the latter case, the thickness of the layers can range from nanometer to microns. My works involve the synthesis of the polymer layers, the study of their structure and the development of their responsive and adaptative properties.

- Polymer brushes.

+ Synthesis by controlled radical polymerization techniques (ATRP, RAFT)

+ Swelling behavior using scaling laws

+ Adaptative properties for specific adsorption and adhesion

- Thin films of Hydrogels

+ Synthesis by click chemistry

+ Microfluidic applications

  • Microvalves functionality : the swelling/deswelling of hydrogels can close/open microchannels
  • switchable microvalves : use of temperature, light and electric field for activation

+ Development of new assemblies : multilayers, double-networks…

Teaching Activities

- Polymer at interfaces and characterization
Lectures : University Paris 6. Research Master’s Degree

- Interfaces and soft matter
Lectures : University Paris 6. Coursework Master’s Degree

- Spectroscopy. Infrared and Raman. UV-visible absorption and Fluorescence
Lectures : University Paris 5. Master’s Degree
Tutorial and Practical classes : ESPCI

- States of matter and Properties of matter
Tutorial and Practical classes : ESPCI

Recent Publications

Structure of surfaces and interfaces of poly(N,N-dimethylacrylamide) hydrogels.
Sudre, G. ; Hourdet, D. ; Cousin, F. ; Creton, C. ; Tran, Y. Langmuir, 2012, 28, 12282-12287.

Reversible adhesion between a hydrogel and a polymer brush.
Sudre, G. ; Olanier, L. ; Tran, Y. ; Hourdet, D. ; Creton, C. Soft Matter, 2012, 8, 8184-8193.*

pH/Temperature control of interpolymer complexation between poly(acrylic acid) and weak polybases in aqueous solutions.
Sudre, G. ; Tran, Y. ; Creton, C. ; Hourdet, D. Polymer, 2012, 53, 379-385.

Benzophenone absorption and diffusion in PDMS and its role in graft photo-polymerization for surface modification.
Schneider, M. H. ; Tran, Y. ; Tabeling, P. Langmuir, 2011, 27, 1232-1240.

Thermoresponsive inter-polyelectrolyte complexation : application to macromolecular assemblies.
Siband, E. ; Tran, Y. ; Hourdet, D. Macromolecules, 2011, 44, 8185-8194.

Synthesis and characterization of poly(acrylic acid) brushes : “grafting onto” route.
Sudre, G. ; Siband, E. ; Hourdet, D. ; Creton, C. ; Cousin, F. ; Tran, Y. Macromol. Chem. Phys., 2011, 213, 293-300.