Professor, Section of Mechanics, NTUA
Date of Birth: 1954/10/14
Business Address: 5 Heroes of Polytechnion Av., Zografou Campus, Athens 15773, Greece, National Technical University of Athens (NTUA), School of Applied Mathematical and Physical Sciences, Section of Mechanics.
1985, Ph.D, Department of Engineering Sciences, NTUA
2007- Professor, Section of Mechanics, NTUA.
1979-1981: Researcher at the Laboratory of Polymers, School of Chemical Engineering, NTUA.
1981-1988: Researcher at the Section of Mechanics, NTUA.
1988-1991: Lecturer, Section of Mechanics, NTUA.
1991-1998: Assistant Professor, Section of Mechanics, NTUA.
1998-2007: Associate Professor, Section of mechanics, NTUA
2007- Professor, Section of Mechanics, NTUA
Research Fields of Interest:
Mechanics and Physics of polymers and polymeric composite materials. More specifically: study of the thermomechanical behaviour and its relationship to the structure of a variety of polymeric materials, thermosettings (epoxy resins, polyurethanes), thermoplastics (polystyrene, polymethylmethacrylate, polycarbonate), liquid crystalline polymers (in situ composites) , semicrystalline materials (linear low density polyethylenes, polypropylene). Experimental study and constitutive description of vulcanized elastomers, (pure and reinforced with carbon black). Experimental and theoretical study of nonlinear viscoelasticity (stress relaxation, creep, monotonic loading) for various material types. Experimental and theoretical study of plastic behaviour (yield, strain softening, strain hardening, rate effect) of amorphous glassy polymers. Experimental and theoretical description of polymeric composites (particulate, unidirectional fiber composites). Constitutive laws for strain hardening. Preparation and experimental work on polymeric nanocomposites (polyethylene and polystyrene silica nanocomposites). Recent research on polycyanurate-cloisite nanocomposites, the effect of nanoparticles on α, β, γ relaxations, and development of a micromechanics model for the description of the reinforcing effect of nanoparticles. Experimental and theoretical study of biodegradable polymers and their nanocomposites, with various types of nanofillers (particles or clays). Study of the effect of ageing parameters, such as temperature, humidity and time of exposure, on their mechanical performance.
Participation in Research Projects: Coordinator / partner in international and national projects.
Publications: about 60 journal papers, about 30 presentations in national and international conferences. Chapter in book
Science Citation Index: About 400 references.
1981-1988: Laboratory exercises (NTUA).
1988-: Mechanics of Deformable Body, Linear Viscoelasticity, Introduction to Plasticity, Mechanics and Physics of Polymers and Polymeric Composites (undergraduate level), Materials science, Nonlinear Viscoelasticity, Anelastic Behaviour of Materials (postgraduate level).
Languages: Greek (mother tongue), English (fluent), German (fair).
List of publications
P.S.Theocaris, G.C.Papanicolaou and E.Kontou, “The Effect of Filler Volume Fraction and Strain Rate on the Tensile Properties of Iron-Epoxy Particulate Composites”, Jnl.of Reinforced Plastics and Composites, Vol.1, p.206-224, (1982).
P.S.Theocaris, E.Kontou and G.C.Papanicolaou, “The Effect of Moisture Absorption on the Thermomechanical Properties of Particulates”, Colloid and Polymer Science, Vol.261, p.394-403, (1983).
P.S.Theocaris, G.C.Papanicolaou and E.Kontou,“Interrelation
Between Moisture Absorption, Mechanical Behaviour and Extend of the
Boundary Interphase in particulate Composites”, Jnl.of Applied
Polymer Sci., Vol.28, p.3145-3153, (1983).
G.Spathis, E.Kontou and P.S.Theocaris, “Dynamic Mechanical
Properties of an Iron-epoxy Particulate Composite”, Journal of
Rheology, Vol. 28(2), p.161, (1984).
P.S.Theocaris, G.C.Papanicolaou and E.Kontou, “Mechanism of Moisture Absorption in Metal-Filled Epoxies”, Polymer Processing and Properties, Edited by Gianni Astarita and L.Nicolais, Plenum Publishing Corporation, p.439-447, (1985).
G.Spathis, E.Kontou and P.S.Theocaris, “Network Structure of Plasticized Epoxy Resins by Dynamic Measurements”, Rheologica Acta, Vol.24, p.63, (1985).
E.Kontou, G.Spathis and P.S.Theocaris, “The Heterogeneity of the Network Structure of Epoxy Polymers Studied by Dynamic and DSC-Tests”, Journal of Polymer Science,Vo. 23, p.1493, (1985).
E.Sideridis, P.S.Theocaris and E.Kontou, “Dynamic Properties of Particulate Composites: Application to Iron-Epoxy Composites, Polymer Composites, Nr 1,p.1-8, (1986).
G.Spathis, E.Kontou and P.S.Theocaris, “Network Characterization of a Polyfunctional Crosslinked System”, Journal of Macromolecular Science-Physics, B26(4), P.509, (1987).
G.Spathis, E.Kontou and P.S.Theocaris, “Structural Changes in Glassy Polymers Studied by Thermal Analysis and Dynamic Mechanical Tests”, Journal of Polymer Science, part A 25, p.1285, (1987).
V.Kefalas, P.S.Theocaris and E.Kontou, “The Gel-Phase Modulus of High- Impact Polystyrene from Dynamic Mechanical Spectroscopy”, Polymer Composites, Vol.9(3), p.229-236, (1988).
E.Kontou and G.Spathis, “Elastic Behaviour of Natural Rubber Filled Vulcanizates”, Journal of Applied Polymer Sci., Vol.39, p.649-654, (1990).
E.Kontou, G.Spathis, M.Niaounakis and V.Kefalas, “Physical and Chemical Crosslinking Effects in Polyurethane Elastomers”, Colloid and Polymer Science, Vol.268, p.66, (1990).
G.Spathis, E.Kontou and A.Saklabani, “The Effect of Accelerator on the Crosslink-Density and Mechanical Behaviour of an SBR-Filled Elastomer”, Jnl.of Reinforced Plastics and Composites, Vol.10(4), p.391-399, (1991).
G.Spathis, E.Kontou and G.Bourkas, “A New Equation of the Relaxation Process in the Nonequilibrium State: Application to Creep and Dynamic Experiments in Epoxy Resins”, The Society of Rheology, Vol.35(8),p.1481-1497, (1991).
L.Apekis, P.Pissis, C.Christodoulides, G.Spathis, M.Niaounakis, E.Kontou, E.Schlosser, A.Schonals and H.Goering, “Physical and Chemical Network Effects in Polyurethane Elastomers”, Colloid and Polymer Science, Vol.90, p.144-150, (1992).
G.Spathis, M.Niaounakis, E.Kontou, L.Apekis, P.Pissis, C. Christodoulidis, “Morphological Changes in Segmented Polyurethane Elastomers by varying the NCO/OH Ratio”, Jnl. Appl. Pol. Sci, Vol 54, p. 831-842 (1994).
E.Kontou, “Stress-Softening Effects in Elastomeric Networks”, Jnl. of Reinforced Plastics and Composites, Vol.13 (8), p.756-766, (1994).
E.Kontou, “Nonlinear Viscoelasticity of a Vulcanized Elastomer”, Jnl.of Applied Polymer Sci., Vol.54, p.1873-1877, (1994).
G.Spathis and E.Kontou, “Viscoelastic Response of Elastomers in
Large Deformations”,Polymer Gels and Networks, Vol.3,p.209-220,
E.Kontou, “Modeling of Post-Yield Behaviour Of Glassy Polymers”, Jnl. of Applied Polymer Sci., vol.61, p.2191-2195, (1996).
E.Kontou, G.Spathis and C.Kavadias, “Viscoplastic Behaviour of PMMA blends - The Effect of Moisture Absorption”, Jnl.of Reinforced Plastics and Composites, vol. 16(4), p.306-320 (1997).
E.Kontou, M.Lopez Torres and P. Farasoglou, “Structure Property
Interrelation of Polypropylene-Liquid Crystalline Polymer Blends”,
Jnl. of Reinforced Plastics and Composites , Vol17(2), (1998).
E.Kontou, “Relaxation Time Spectra of Linear and Crosslinked Polymers” Journal of Applied Polymer Science , Vol.67, p.679 (1998)
E.Kontou and P.Farasoglou, “Determination of the True Stress-strain Behaviour of Polypropylene” Journal of Materials Science ,Vol.33, pp 147-153 (1998)
E.Kontou and G.Spathis, “Structural Rearrangements During Yielding of Glassy Polymers” Polymer Engineering and Science, Vol.38(9),(1998)
A.M. Blanas, E.Kontou and G.Spathis “A Mechanical Model for the
Prediction of the Elastic properties of Polymeric Resins Reinforced
With Liduid Crystal Polymers” Journal of Reinforced Plastics and
Composites, vol18(5), (1999)
G.Spathis and E.Kontou, “An Experimental and Analytical Study of
the Large Strain Response of Glassy Polymers With a Non-Contact
Laserextensometer”, Journal of Applied Polymer Science , Vol.71,
P.Farasoglou, E.Kontou, G.Spathis, J.L.Gomez Ribelles and Gallego Ferrer “Processing Conditions and Compatibilizing Effects on Reinforcement of Polypropylene-Liquid Crystalline Polymer Blends” Polymer Composites, vol.21(1), p.84-95, (2000).
G.Spathis and E.Kontou, “Mechanism of Plastic Deformation for Polycarbonate under Compression by a Laserextensometer Technique” Jnl of Applied Polymer Science, vol.79,p.2534 (2001).
G.Spathis and E.Kontou “Non-Linear Viscoelastic and Viscoplastic Response of Glassy Polymers” Polymer Engineering and Science , vol.41,No 8, p.1337, (2001).
E.Kontou and G.Spathis, “Interrelation between Long Term Viscoelasticity and Viscoplastic Response of Semicrystalline Polymers”, Journal of Applied Polymer Science,vol.88, p. 1942-1950 (2003).
C.Papanicolaou, S.P.Zaoutsos, and E.Kontou, Fiber OrientationDependence of Continuous Carbon/epoxy Composites Nonlinear Viscoelastic Behavior , Composites Science and Technology, vol 64(16), p.2535-2545 (2004).
E.Kontou , A.Kallimanis, “Formulation of the Viscoplastic Behavior
of Epoxy- Glass Fiber Composites”, J. Composite Materials,
vol.39(8), p.711-721 (2005)
M.Niaounakis, E.Kontou, “Effect of LDPE on the thermomechanical properties of LLDPE- based films” J Pol.Sci.Phys. Part B: Polymer Physics, Vol. 43, p. 1712-1727, (2005).
E.Kontou, “Viscoplastic Deformation of an Epoxy Resin at Elevated
Temperatures”, Jnl. Appl. Pol. Sci, Vol 101(3), p. 2027-2033
S.Kripotou, P.Pissis, E.Kontou, A.M.Feinleib, O.Grygoryeva, I,Bey, “Polycyanurate Networks Modified by Polyoxytetramethylene Glycol”, Polymer Bulletin, published on line: June (2006).
S.Kripotou, P.Pissis, E.Kontou, A.M.Feinleib, O.Grygoryeva, I,Bey,,“Structure-Property Relationship in Brittle Polymer Networks Modified by Flexible Crosslinks” Materials Science-Poland, vol. 24(2/2), (2006).
G.I. Anthoulis, E. Kontou, “Micromechanical behaviour of
particulate polymer nanocomposites”, Polymer (2008), vol. 49,
G.I.Anthoulis, E.Kontou, A.Fainleib,I.Bei, “Polytetramethylene glycol-modified polycyanurate matrices reinforced with nanoclays: Synthesis and thermomechanical performance”, Mechanics of Composite Materials, vol 45(2), 175-182 (2009).
M.Niaounakis, E.Kontou, M.Xanthis, “Ageing Effects on the thermomechanical properties of Polylactic Acid, J of Applied Polymer Science, in press (2010)
G.Spathis, E.Kontou, ‘Modeling the compressive stress-strain response of polymeric foams’ submitted in the Journal of Appplied Polymer Science (2010).
E.Kontou, G.C.Papanicolaou and P.S.Theocaris, “Degradation of the Thermomechanical Properties of Viscoelastic Particulate Composites due to Moisture Absorption”, Proceedings of the IUPAC International Symposium on Interrelations Between Processing Structure and Properties of Polymer Materials”, ed. by J.Seferis and P.S.Theocaris,p.687-702, (1984).
V.Kefalas,G.Spathis and E.Kontou, “Dynamic Mechanical Analysis of High Impact Polystyrene”, Proc.Comp. 86, Engineering Applications of New Composites, The University of Patras 25-29 August 1986, Patras Greece, Omega Scientific, England (1988).
L.Apekis, P.Pissis and C.Christodoulides, G.Spathis, E.Kontou and V.Kefalas, “Dielectric Properties of Polyurethane Block Copolymers”, Proceedings of the 6th International Symposium on Electrets, Oxford, England, (1988).
L.Apekis, C.Christodoulides, P.Pissis, G.Spathis, E.Kontou and V.Kefalas, “Dielectric Study of Polyurethane Block Copolymers”,
E.Kontou, G.Spathis, V.Kefalas, L.Apekis, C.Christodoulides and P.Pissis, “Structure-Property Interrelation in Thermoplastic Polyurethanes”, Comp 88, Phase Interaction in Composite Materials, Second International Symposium, Patras Greece, August (1988).
C.Christodoulides, P.Pissis, G.Spathis, E.Kontou and V.Kefalas,
“Thermally Stimulated Depolarization Current Measurements in
Polyurethane Block Copolymers”, Sixth International Seminar on
Polymer Physics, Gomodingen (W.Germany) October (1988).
L.Apekis, C.Christodoulides, P.Pissis, G.Spathis, E.Kontou,V.Kefalas, “Study of glass transition of polymers by dielectric and thermomechanical methods” Hellenic Conference of Solid State Physics, Xanthi, September 1989.
L.Apekis, P.Pissis, C.Christodoulides, G.Spathis, E.Kontou, V.Kefalas, M.Niaounakis “Study of the structure-properties relationship by dielectric and thermomechanical methods’Conference on new advanced technology materials in Greece, Athens, December 1989.
E.Kontou, G.Spathis, F.Romero Colomer, M.Lopez Torres and J.L.Gomez Ribelles, “Thermomechanical Behaviour of Polypropylene-Liquid Crystalline Blends”, J.MED.CAT ‘97, Universitat de les Illes Balears, June 24-27, (1997).
C.Maggana, G.Spathis, E.Kontou and P.Pissis, “Water Effect to the a-Relaxation Process of Epoxy Resin Systems” Proceedings of the 5th European Conference on Advanced Materials and Processes and Applications, Materials, Functionality and Design, Edited by L.A.J.L. Sarton and H.B. Zeedijk, Maastricht-NL, 21-23 April 1997.
M.Lopez, F.Romero, J.L.Gomez, M.Monleon, E.Kontou, G.Spathis, P.Farasoglou, P.Pissis and A.Kiritsys, “Morphology and Mechanical Properties of Blends of Polypropylene and a Main Chain Liquid Crystal Polymer”, International Symposium on Polymeric Materials, Terrassa, 8-10 September 1997, Spain
Ε.Κontou and G.Spathis “Theoretical and Experimental Investigation of non-linear viscoelastic and viscoplastic response of amorphous polymers’3nd International Meeting of the Hellenic Society of Rheology , Patras, Greece , June 10-14 ,(2001).
E.Kontou, M.Niaounakis, G.Spathis, “Thermomechanical Behavior and Morphology of Metallocene Ethylene –a-olefin Copolymers’4th International Discussion Meeting on Relaxation in Complex Systems, 17-23 June, Crete, (2001).
E.Kontou, M.Niaounakis “Thermomechanical behaviour and morphology of Polyethylene copolymersE. Κοντού και Μ.Νιαουνάκης, 10 Hellenic Conference of Thermal Analysis, September 27-29, 2002, Thessaloniki, Kerkini Lake.
E.Kontou and A.Kallimanis, “Non-Linear Rate Dependent Response of Fiber Reinforced Polymer Composites” Regional Meeting of Polymer Processing Society, September14-17, 2003, Athens Greece.
E.Kontou and A.Kallimanis, “Viscoplastic Response of Unidirectional Fiber Polymer Composites”, 11th European Conference on Composite Materials, June 2004, Rhodes, Greece.
Th. Mpalomenos, E.Kontou “Study of the thermomechanical behavior of Polyethylene blends and films’ 2nd Therma 2004, Ioannina, 25-26 June, 2004.
S.Kripotou, G.Georgousis, P.Pissis, E.Kontou,A. Fainleib, O.Grigoryeva, I.Bey, V.Bershtein, L.David, “Dielectric Studies of Molecular Mobility in Polycyanurate Networks Modified by Flexible Crosslinks”, 40th IUPAC World Polymer Congress, Paris, France, July 4-9, 2004
E.Kontou and A.Kallimanis, “Temperature Effect on the Viscoplastic Properties of Glass-fiber Polymer Composites”, 7th Mediterranean Conference on Calorimetry and Thermal Analysis, 2-6 July 2005, Thessaloniki.
O. Slisenko, E. Lebedev, P.Pissis, A.Spanoudaki, E.Kontou, O.Grigoryeva, “ Application of Thermal Analysis Methods for Structure-Property Characterization of Polymer Blends Based on Poly(ether-urethane) Ionomer and Ion-Containing Styrene Copolymer”, 7th Mediterranean Conference on Calorimetry and Thermal Analysis, 2-6 July 2005, Thessaloniki.
A.Kanapitsas, C. Tsonos, E.Logakis, C.Pandis, P.Pissis, E.Kontou,, Y.P. Mamunya, E.V. Lebedev, C.G.Delides, “ PTC Effect and Structure of Polymer Composites Based on Polypropylene/Co-Polyamide Blend Filled with Dispersed Iron”, 25th International Conference on Microelectronics, Nis, Serbia and Montenegro, 14-17 May 2006.
E.Kontou, M.Niaounakis, G. Anthoulis, “Viscoelastic Properties of Polystyrene/Silica Nanocomposites”, 9th European Symposium on Thermal Analysis and Calorimetry, 27-31 August 2006, Krakow, Poland
G. Anthoulis, E. Kontou, P. Maroulas, S. Kripotou, P. Pissis, A. Fainleib, I. Bei, “Thermomechanical Behaviour and Molecular Dynamics of PCN/PTMG/MMT Nanocomposites”, 3rd International Symposium on “Nanostructured and Functional Polymer-based Materials and Nanocomposites” (NANOFUN-POLY), 13-15 May, Corfu, Greece, 2007.
G. Anthoulis, E. Kontou, “Micromechanical Behaviour of Particulate Polymer Nanocomposites”, 3rd International Symposium on “Nanostructured and Functional Polymer-based Materials and Nanocomposites” (NANOFUN-POLY), 13-15 May, Corfu, Greece, 2007.
P. Maroulas, S. Kripotou, P. Pissis, G. Anthoulis, E. Kontou, A. Fainleib, I. Bei, “Molecular mobility and glass transition Dynamics of PCN/Organoclay nanocomposites”, 46th Microsymposium “Nanostructured polymers and polymer nanocomposites”, 8-12 July, Prague, Czech Republic, 2007.
G.Spathis, E.Kontou, “Strain Localization Effect on Yielding of Gassy Polymers” ICSAM-2007, September 2007, Patras
Anthoulis GI, Kontou E, Kalkanis K, “Modeling the elastic modulus of polymer/clay nanocomposites with the effective particle approach”, 2008, IV International Conference on times of polymers (TOP) and composites, Edited by Domenico Acierno, Alberto dAmore, Luigi Grassia, Department of Aerospace and Mechanical Engineering , Second university of Naples Federico II, 21-24 September , Ischia, Italy, AIP Conference Proceedings, Vol 1042, pp153-155.
Anthoulis GI, Kontou E, Fainleib A, Bei I, (2008), Polytetramethyleneglycol-modified polycyanurate matrices reinforced with nanoclays:Synthesis and thermomechanical performance in XV International conference on Mechanics of composite materials (MCM-2008) 26-30 May, Riga Latvia.
E.Kontou and M. Niaounakis, 2010, Comparing Nanofillers in Polylactide Nanocomposites, Times of Polymers & composites (TOP), June 20-23, Ischia , Italy.
E.Kontou, “Experimental study and modeling of the viscoplastic response of polymers and polymer composites” DURACOSYS-2010, September 12-15, 2010, Patras, Greece.