Eng : BENYAHIA Lazhar

Professor  Tel. : 02 43 83 38 02  Fax. : 02 43 83 35 58  Email : Lazhar.Benyahia@univ-lemans.fr

RESEARCH INTERESTS

My research activities concern the study, at the mesoscopic scale, of dynamics of complex systems under deformation. Special attention is given to the interaction between the linear and non linear rheological properties and the morphology or the structure of the studied systems. Physico-chemistry of the materials is considered to understand the physical phenomenon or to monitor them in order to get new material with new structure and rheological properties.

Field of interest:

 Investigation of the effect of shear on the deformation of droplets with unusual rheological and interfacial properties.
 Dispersed systems and formulation of new polymer-based materials.
 Gelation, rheology and phase separation of biopolymers.
 Dense suspensions of polymeric micelles.
 Adhesion of pressure-sensitive adhesives: relation between rheological and physico-chemical properties of polymers and their adhesive properties (My PhD thesis work).

Publications

Books

[3] Fresnais, J., L. Benyahia, F. Poncin-Epaillard, and J.P. Chapel, Plasma Synthesis of Ultrahydrophobic Polymeric Surfaces, in Surface Modification Technologies. XVIII, M.J.T.S. Sudarshan and J.J. Stiglich, Editors. 2006. p. 245-249.

[2] Pouzot, M., L. Benyahia, D. Durand, and T. Nicolai, Linear and non-linear rheological properties of beta-lactoglobulin gels in relation to their microstructure, in Food Colloids: Interactions, Microstructure and Processing, E. Dickinson and T. cvan Vliet, Editors. 2005, Royal Society of Chemistry: Cambridge. p. 37-47.

[1] Panouille, M., T. Nicolai, L. Benyahia, and D. Durand, Aggregation and gelation of casein sub-micelles, in Food Colloids: Interactions, Microstructure and Processing, E. Dickinson and T. van Vliet, Editors. 2005, Royal Society of Chemistry: Cambridge. p. 194-208.

Papers in Scientific Journals

[34] Ji Wang, Lazhar Benyahia, Christophe Chassenieux, Jean-François Tassin and Taco Nicolai. Shear induced gelation of associative polyelectrolytes. Polymer. 2010: accepted.

[33] Assighaou S. and Benyahia L. Scaling law behaviour of the retraction of a Newtonian droplet after a strain jump in a Newtonian matrix. Rheol. Acta. 2010: accepted

[32] Boufarguine M., Renou F., Nicolai T. and Benyahia L. Droplet deformation of a strongly shear thinning dense suspension of polymeric micelles. Rheol. Acta. 2010: accepted

[31] Chartier, C., L. Benyahia, J.F. Tassin, H. Dang Ngoc, and J.F. Bardeau, Selective migration in polyethylene/rubbery particles blends during capillary flow. Polymer Engineering and Science, 2009: accepted.

[30] Deverge, M., L. Benyahia, and S. Sahraoui, Pore size and viscoelasticity of acoustic foams. J. Acoust. Soc. Am. 126 (3), September 2009.

[29] Bécu, L. and L. Benyahia, Strain-induced droplet retraction memory in a Pickering emulsion. Langmuir, 2009.25 (12), pp 6678–6682.

[28] Renardy, Y., M. Renardy, S. Assighaou, and L. Benyahia, Numerical simulation of drop retraction after a strain jump. Phys Rev E Stat Nonlin Soft Matter Phys. E 79, 046323 (2009)

[27] Renou, F., T. Nicolai, E. Nicol, and L. Benyahia, Structure and Viscoelasticity of Mixed Micelles Formed by Poly(ethylene oxide) End Capped with Alkyl Groups of Different Length. Langmuir, 2009. 25(1): pp. 515-521.

[26] Renou, F., T. Nicolai, L. Benyahia, and E. Nicol, Transient Gelation and Glass Formation of Reversibly Cross-linked Polymeric Micelles. Journal of Physical Chemistry B, 2009. 113(10): p. 3000-3007.

[25] Fresnais, J., J.P. Chapel, L. Benyahia, and F. Poncin-Epaillard, Plasma-Treated Superhydrophobic Polyethylene Surfaces: Fabrication, Wetting and Dewetting Properties. Journal of Adhesion Science and Technology, 2009. 23: p. 447–467.

[24] Renou, F., L. Benyahia, T. Nicolai, and O. Glatter, Structure and rheology of mixed polymeric micelles formed by hydrophobically end-capped poly(ethylene oxide). Macromolecules, 2008. 41(17): p. 6523-6530.

[23] Renou, F., L. Benyahia, and T. Nicolai, Structure and rheology of dense micelles suspensions formed by hydrophobically end-capped PEO. Xvth International Congress on Rheology - the Society of Rheology 80th Annual Meeting, Pts 1 and 2, 2008. 1027: p. 1027-1029.

[22] HadjSadok, A., A. Pitkowski, T. Nicolai, L. Benyahia, and N. Moulai-Mostefa, Characterisation of sodium caseinate as a function of ionic strength, pH and temperature using static and dynamic light scattering. Food Hydrocolloids, 2008. 22(8): p. 1460-1466.

[21] Assighaou, S. and L. Benyahia, Universal retraction process of a droplet shape after a large strain jump. Phys Rev E Stat Nonlin Soft Matter Phys, E 77 036305 (2008).

[20] Renou, F., L. Benyahia, and T. Nicolai, Influence of adding unfunctionalized PEO on the viscoelasticity and the structure of dense polymeric micelle solutions formed by hydrophobically end-capped PEO. Macromolecules, 2007. 40: p. 4626-4634.

[19] Assighaou, S., G. Le Dû, and L. Benyahia, Dispositif d’observation de gouttes sous déformation : développement et validation. Rhéologie, 2007. 11: p. 45-55.

[18] Pouzot, M., T. Nicolai, L. Benyahia, and D. Durand, Strain hardening and fracture of heat-set fractal globular protein gels. Journal of Colloid and Interface Science, 2006. 293(2): p. 376-383.

[17] Journeau, C., G. Jeulain, L. Benyahia, J.F. Tassin, and P. Abelard, Rheology of mixtures in the solidification range. Rhéologie, 2006. 9: p. 28-39.

[16] Fresnais, J., L. Benyahia, and F. Poncin-Epaillard, Dynamic (de)wetting properties of superhydrophobic plasma-treated polyethylene surfaces. Surface and Interface Analysis, 2006. 38(3): p. 144-149.

[15] Chaari, F., M. Chaouche, L. Benyahia, and J.F. Tassin, Investigation of the crystallization of m(LLDPE) under shear flow using rheo-optical techniques. Polymer, 2006. 47(5): p. 1689-1695.

[14] Panouille, M., L. Benyahia, D. Durand, and T. Nicolai, Dynamic mechanical properties of suspensions of micellar casein particles. Journal of Colloid and Interface Science, 2005. 287(2): p. 468-475.

[13] Nicolai, T. and L. Benyahia, Shear flow and large strain oscillation of dense polymeric micelle suspension. Macromolecules, 2005. 38(23): p. 9794-9802.

[12] Etchessahar, M., S. Sahraoui, L. Benyahia, and J.F. Tassin, Frequency dependence of elastic properties of acoustic foams. Journal of the Acoustical Society of America, 2005. 117(3): p. 1114-1121.

[11] Pouzot, M., T. Nicolai, D. Durand, and L. Benyahia, Structure factor and elasticity of a heat-set globular protein gel. Macromolecules, 2004. 37(2): p. 614-620.

[10] Pouzot, M., L. Benyahia, and T. Nicolai, Dynamic mechanical characterization of the heat-induced formation of fractal globular protein gels. Journal of Rheology, 2004. 48(5): p. 1123-1134.

[9] Fresnais, J., L. Benyahia, J.P. Chapel, and F. Poncin-Epaillard, Polyethylene ultrahydrophobic surface: synthesis and original properties. European Physical Journal-Applied Physics, 2004. 26(3): p. 209-214.

[8] Mazard, C., L. Benyahia, and J.F. Tassin, Dynamic mechanical properties of polystyrene-based block copolymers blended with poly(2,6-dimethyl-1,4-phenylene oxide). Polymer International, 2003. 52(4): p. 514-521.

[7] Hijazi, A., L. Benyahia, A. Khater, and M. Zoaeter, Experimental study of the collision between a rod like macromolecule and a solid surface. European Polymer Journal, 2003. 39(3): p. 521-525.

[6] Chaari, F., M. Chaouche, L. Benyahia, and J.F. Tassin, Rheo-optical characterization of linear low density polyethylene crystallization under shear. International Journal of Applied Mechanics and Engineering, 2003. 8(Special Issue "ICER 2003"): p. 213-218.

[5] Gasilova, E., L. Benyahia, D. Durand, and T. Nicolai, Influence of entanglements on the viscoelastic relaxation of polyurethane melts and gels. Macromolecules, 2002. 35(1): p. 141-150.

[4] Verdier, C., J.M. Piau, and L. Benyahia, Peeling of acrylic pressure sensitive adhesives: Cross-linked versus uncross-linked adhesives. Journal of Adhesion, 1998. 68(1-2): p. 93-116.

[3] Piau, J.M., C. Verdier, and L. Benyahia, Influence of rheology and surface properties in the adhesion of uncross-linked pressure sensitive adhesives. Rheologica Acta, 1997. 36(4): p. 449-461.

[2] Benyahia, L., C. Verdier, and J.M. Piau, The mechanisms of peeling of uncross-linked pressure sensitive adhesives. Journal of Adhesion, 1997. 62(1-4): p. 45-73.

[1] Verdier, C., J.M. Piau, and L. Benyahia, The influence of elongational properties in the peeling of polymers. Comptes Rendus De L Academie Des Sciences Serie Ii Fascicule B-Mecanique Physique Chimie Astronomie, 1996. 323(11): p. 739-746.