Mohamed Yousfi

The aim of my work is to study the effect of confinement of polymers in nanoparticles in nanoblends on their glass transition and their dynamics and quantify the deviation of these properties relative to bulk. We have successfully developed the first new non-intrusive method using in-situ annealing process to determine the large scale dynamics and nanomechanical properties of polymer chains confined at the nanoscale 3D geometry. Our results are confronted with other scientific output on thin films geometry. SIENTIFIC EXPERTISE Synthesis of polymers by emulsion polymerization. Spin-Coating of polymers.

Polymer film formation process. Physicochemical characterization: Fluorescence Spectroscopy, Light Scattering, DSC, TGA, RMN , GPC, MEB, AFM, XRD, Neutrons Scattering, Ellipsometry, Conductometry titration ...... PUBLICATIONS Papers : A Novel Method for Studying the Dynamics of Polymers Confined in Spherical Nanoparticles in Nanoblends

M.Yousfi,

L.Porcar,

P.Lindner,

F.Boué,

Y.Rharbi

–

Macromolecules, 2009, 42 (6), pp 2190–2197 Methods for probing the long range dynamic of confined polymer in nanoparticles using S.A.N.S Y.Rharbi, M.Yousfi, L.Porcar, Q.Nawaz – Submitted to International Journal of Chemical Kinetics Proceedings :

Nanomechanical

properties

of

nanoconfined

polystyrene

nanoparticles in nanoblends M.Yousfi, Y.Rharbi

18ÈME

Congrès Français de Mécanique - Grenoble - August 2007 Seminars & Workshops : Glass transition of spherical polystyrene nanoparticles M.Yousfi, Y.Rharbi, ILL Soft Matter User Meeting – Grenoble November 2006 Nanomécanique et transition vitreuse des polymères confinés dans des nanoparticules M.Yousfi, Séminaire Annuel du Cluster de Recherche Macodev – Sévrier March 2008

Une nouvelle méthode pour étudier la diffusion et la nanomécanique de polymères nanoconfinés M.Yousfi, Y.Rharbi Colloque National GFP – Lyon November 2008 Novel methods for probing the dynamics of nanoconfined polymers in nanoscopic domains M. Yousfi, Y.Rharbi Studying Kinetics Workshop Grenoble – October 2009