Since 1 January 2021, I have been the laboratory's Deputy Unit Director (DUA) at the request of the laboratory's previous director, and I am in charge of the materials characterisation platform.

I trained as a materials engineer (graduating in 1989) and joined the CNAM in 1991 as a design engineer. I've been interested in research since I joined the CNAM, and in 2003 I defended a thesis on the extrusion of films of polymer blends with high gas barrier properties. In 2010 I joined the corps of research engineers. With the former CNAM P2AM team, I joined the PIMM in 2011.

As a member of the polymers and composites group and the physico-chemical characterisation resource centre, I am in charge of research support for :

- twin-screw extrusion, single-screw extrusion and multi-layer co-extrusion lines 

- gas permeability measurements (oxygen and helium).

As part of the "materials characterisation" platform created in 2022, which encompasses 4 resource centres including physico-chemical characterisation, I was able to develop new methods for measuring oxygen diffusion coefficients with a view to participating in the polymer ageing activity. 

Alongside these activities, I have been able to develop my own research into improving the gas barrier properties of polymers, particularly biosourced polymers or bioplastics such as PLA, with a view to their use in food packaging, for example. In this context, I have set up collaborations with INRA and AGROPARISTECH and am part of the PROPACKFOOD RMT (national mixed technology network), which is interested in improving the quality of packaged goods. To this end, I have developed and optimised a multilayer coextrusion line for the manufacture of flat films and, more recently, blown films.

Teaching is also part of my job. I teach continuing education courses on behalf of the CACEMI (centre d'actualisation des connaissances et de l'étude des matériaux industriels, http://cacemi.cnam.fr/) on my research topics and I am in charge of developing the practical work platform on polymers at the CNAM in Paris 3rd arrondissement. I also teach and collaborate with schools and universities in the Paris region (Ensam, Université Paris-Est Créteil, Agroparistech).

My main publications and research collaborations are listed below:

- Vellayappan M.V., Duarte F., Sollogoub C., Dirrenberger J., Guinault A., Frith J.E., Parkington H.C., Molotnikov A., Cameron N.R. Fabrication of Architectured Biomaterials by Multilayer Co-Extrusion and Additive Manufacturing (2023) Advanced Functional Materials, 33 (31), art. no. 2301547 DOI: 10.1002/adfm.202301547
- Charon, G., Peixinho, J., Michely, L., Guinault, A., Langlois, V.         Rosin natural terpenes as processing aid for polyhydroxyalkanoate: Thermal, mechanical, and viscoelastic properties (2022) Journal of Applied Polymer Science, 139 (43), art. no. e53052 (sam) (hal)
- Freymond, C., Guinault, A., Charbuillet, C., Fayolle, B. Reprocessing of polymer blends from WEEE: A methodology for predicting embrittlement(2022) Polymer Testing, 106, art. no. 107458,(sam) (hal)
- Freymond, C., Guinault, A., Gervais, M., Pluta, M., Makowski, T., Piorkowska, E., Sollogoub, C. Crystallization behavior and morphological features of ethylene-vinyl alcohol 44 copolymer (2022) Express Polymer Letters, 16 (4), pp. 338-353.(sam) (hal)
- Freymond, C., Mackré-Delannoy, X., Guinault, A., Charbuillet, C., Fayolle, B. Thermal oxidation of acrylonitrile-butadiene-styrene: Origin of the ductile/brittle transition (2022) Polymer Degradation and Stability, 206, art. no. 110186, (Sam - Hal)
- Ishida, T., Richaud, E., Gervais, M., Gaudy, A., Kitagaki, R., Hagihara, H., Elakneswaran, Y. Thermal aging of acrylic-urethane network: Kinetic modeling and end-of-life criteria combined with mechanical properties (2022) Progress in Organic Coatings, 163, art. no. 106654, (sam) (hal)
- Thézé, A., Guinault, A., Régnier, G., Richard, S., Macquaire, B. Fused filament fabrication process window for good interlayer bonding: Application to highly filled polymers in metallic powder* (2022) Polymer Engineering and Science, 62 (2), pp. 336-348.(sam) (hal)
- Faraj, H., Sollogoub, C., Guinault, A., Gervais, M., Bras, J., Salmi-Mani, H., Roger, P., Le Gars, M., Domenek, S. A comparative study of the thermo-mechanical properties of polylactide/cellulose nanocrystal nanocomposites obtained by two surface compatibilization strategies (2021) Materials Today Communications, 29, art. no. 102907
- Jdidi, H., Fourati, N., Zerrouki, C., Ibos, L., Fois, M., Guinault, A., . . . Guermazi, H. (2021). Exploring the optical and dielectric properties of bifunctional and trifunctional epoxy polymers. Polymer, 228 , Article number 123882 (sam) (hal)
- Lozay, Q; Beuguel, Q; Follain, N; Lebrun, L; Guinault, A; Miquelard-Garnier, G; Tence-Girault, S; Sollogoub, C; Dargent, E; Marais, S (2021) . Structural and Barrier Properties of Compatibilized PE/PA6 Multinanolayer Films. Membranes. 11 (2) . Article Number: 75 (sam) (hal)
- Jilani, W., Fourati, N., Zerrouki, C., Faugeras, P. -., Guinault, A., Zerrouki, R., & Guermazi, H. (2020). Exploring the structural properties and enhancement of opto-electrical investigations for the synthesized epoxy based polymers with local nanoscale structures. Materials Research Express, 7(3) , Article number 035305. (sam) (hal)
- Araujo, S., Delpouve, N., Domenek, S., Guinault, A., Golovchak, R., Szatanik, R., . . . Dargent, E. (2019). Cooperativity scaling and free volume in plasticized polylactide. Macromolecules, 52(16), 6107-6115. (sam) (hal)
- Beuguel, Q., Guinault, A., Léger, L., Restagno, F., Sollogoub, C., & Miquelard-Garnier, G. (2019). Nanorheology with a conventional rheometer: Probing the interfacial properties in compatibilized multinanolayer polymer films. ACS Macro Letters,  1309-1315 (sam) (hal)
- Lizundia, E., Penayo, M. C., Guinault, A., Vilas, J. L., & Domenek, S. (2019). Impact of ZnO nanoparticle morphology on relaxation and transport properties of PLA nanocomposites. Polymer Testing, 75, 175-184. (sam) (hal)
- Messin, T., Marais, S., Follain, N., Chappey, C., Guinault, A., Miquelard-Garnier, G., . . . Sollogoub, C. (2019). Impact of water and thermal induced crystallizations in a PC/MXD6 multilayer film on barrier properties. European Polymer Journal, 111, 152-160. (sam) (hal)
- Richaud, E., Guinault, A., Baiz, S., & Nizeyimana, F. (2019). Epoxidized linseed oils based networks. case of thermal degradation. Polymer Degradation and Stability, 166, 121-134. (sam) (hal)
- Amor A., Okhay N., Guinault A., Miquelard-Garnier G., Sollogoub C., Gervais M., (2018).  Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends, Express Polymer Letters, 12(2), 114-125. (sam) (hal)
- Araujo, S., Delpouve, N., Dhotel, A., Domenek, S., Guinault, A., Delbreilh, L., & Dargent, E. (2018). Reducing the gap between the activation energy measured in the liquid and the glassy states by adding a plasticizer to polylactide. ACS Omega, 3(12), 17092-17099.  (sam) (hal)
- Bonfiglio, P., Pompoli, F., Horoshenkov, K. V., Rahim, M. I. B. S. A., Jaouen, L., Rodenas, J., Guinault, A., Forge, C. (2018). How reproducible are methods to measure the dynamic viscoelastic properties of poroelastic media,  Journal of Sound and Vibration, 428, 26-43. (sam) (hal)
- ssabti, F., Guinault, A., Roland, S., Régnier, G., Ettaqi, S., & Gervais, M. (2018). Preparation and characterization of poly(ethylene terephthalate) films coated by chitosan and vermiculite nanoclay. Carbohydrate Polymers, 201, 392-401. (sam)
- Feng, J., Zhang, Z., Bironeau, A., Guinault, A., Miquelard-Garnier, G., Sollogoub, C., . . . Baer, E. (2018). Breakup behavior of nanolayers in polymeric multilayer systems — creation of nanosheets and nanodroplets. Polymer (United Kingdom), 143, 19-27. (sam) (hal)
- Monnier, X., Fernandes Nassar, S., Domenek, S., Guinault, A., Sollogoub, C., Dargent, E., & Delpouve, N. (2018). Reduced physical aging rates of polylactide in polystyrene/polylactide multilayer films from fast scanning calorimetry. Polymer (United Kingdom), 150, 1-9. (sam) (hal)
- Nassar, S. F., Domenek, S., Guinault, A., Stoclet, G., Delpouve, N., & Sollogoub, C. (2018). Structural and dynamic heterogeneity in the amorphous phase of poly(l, l -lactide) confined at the nanoscale by the coextrusion process. Macromolecules, 51(1), 128-136.
- Reano, A. F., Richaud, E., Guinault, A., & Fayolle, B. (2018). Polyethylene loss of ductility during oxidation: Effect of initial molar mass distribution. Polymer Degradation and Stability, 149, 78-84. (sam) (hal)
- Fernandes Nassar, S., Guinault, A., Delpouve, N., Divry, V., Ducruet, V., Sollogoub, C., & Domenek, S. (2017). Multi-scale analysis of the impact of polylactide morphology on gas barrier properties. Polymer (United Kingdom), 108, 163-172. (sam) (hal)
- Messin, T., Follain, N., Guinault, A., Miquelard-Garnier, G., Sollogoub, C., Delpouve, N., Marais, S. (2017). Confinement effect in PC/MXD6 multilayer films: Impact of the microlayered structure on water and gas barrier properties. Journal of Membrane Science, 525, 135-145. (sam) (hal)
- Messin, T., Follain, N., Guinault, A., Sollogoub, C., Gaucher, V., Delpouve, N., & Marais, S. (2017). Structure and barrier properties of multinanolayered biodegradable PLA/PBSA films: Confinement effect via forced assembly coextrusion. ACS Applied Materials and Interfaces, 9(34), 29101-29112. (sam) (hal)
- Roland, S., Miquelard-Garnier, G., Gervais, M., Guinault, A., & Sollogoub, C. (2016). Controlling the order of triblock copolymer via confinement induced by forced self-assembly. Materials Today Communications, 6, 37-43.
- Ruellan, A., Guinault, A., Sollogoub, C., Chollet, G., Ait-Mada, A., Ducruet, V., & Domenek, S. (2015). Industrial vegetable oil by-products increase the ductility of polylactide. Express Polymer Letters, 9(12), 1087-1103.
- Ruellan, A., Guinault, A., Sollogoub, C., Ducruet, V., & Domenek, S. (2015). Solubility factors as screening tools of biodegradable toughening agents of polylactide. Journal of Applied Polymer Science, 132(48)
- Monnier, X., Delpouve, N., Basson, N., Guinault, A., Domenek, S., Saiter, A., Dargent, E. (2015). Molecular dynamics in electrospun amorphous plasticized polylactide fibers. Polymer (United Kingdom), 73, 68-78.
- François-Heude, A., Richaud, E., Guinault, A., Desnoux, E., & Colin, X. (2014). Impact of oxygen transport properties on polypropylene thermal oxidation, part 1: Effect of oxygen solubility. Journal of Applied Polymer Science, 132(5)
- Kurek, M., Guinault, A., Voilley, A., Galić, K., & Debeaufort, F. (2014). Effect of relative humidity on carvacrol release and permeation properties of chitosan based films and coatings. Food Chemistry, 144, 9-17.
- Li, X., Mckenna, G. B., Miquelard-Garnier, G., Guinault, A., Sollogoub, C., Regnier, G., & Rozanski, A. (2014). Forced assembly by multilayer coextrusion to create oriented graphene reinforced polymer nanocomposites. Polymer (United Kingdom), 55(1), 248-257.
- Potier, F., Guinault, A., Delalande, S., Sanchez, C., Ribot, F., & Rozes, L. (2014). Nano-building block based-hybrid organic-inorganic copolymers with self-healing properties. Polymer Chemistry, 5(15), 4474-4479.
- Rasselet, D., Ruellan, A., Guinault, A., Miquelard-Garnier, G., Sollogoub, C., & Fayolle, B. (2014). Oxidative degradation of polylactide (PLA) and its effects on physical and mechanical properties. European Polymer Journal, 50(1), 109-116
- Riquet, A., Delattre, J., Vitrac, O., & Guinault, A. (2013). Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene. Radiation Physics and Chemistry, 91, 170-179.
- Espino-Pérez, E., Bras, J., Ducruet, V., Guinault, A., Dufresne, A., & Domenek, S. (2013). Influence of chemical surface modification of cellulose nanowhiskers on thermal, mechanical, and barrier properties of poly(lactide) based bionanocomposites. European Polymer Journal, 49(10), 3144-3154.
- Domenek, S., Louaifi, A., Guinault, A., & Baumberger, S. (2013). Potential of lignins as antioxidant additive in active biodegradable packaging materials. Journal of Polymers and the Environment, 21(3), 692-701.
- Tri, P. N., Domenek, S., Guinault, A., & Sollogoub, C. (2013). Crystallization behavior of poly(lactide)/poly(β-hydroxybutyrate)/talc composites. Journal of Applied Polymer Science, 129(6), 3355-3365.
- Miquelard-Garnier, G., Guinault, A., Fromonteil, D., Delalande, S., & Sollogoub, C. (2013). Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties. Polymer (United Kingdom), 54(16), 4290-4297
- Alain Guinault, Anh Son Nguyen, Guillaume Miquelard-Garnier, Denis Jouannet, Anne Grandmontagne, Cyrille Sollogoub, Alain Guinault, Anh Son Nguyen, Guillaume Miquelard-Garnier, Denis Jouannet, Anne Grandmontagne, Cyrille Sollogoub, The Effect of Thermoforming of PLA-PHBV Films on the Morphology and Gas Barrier Properties, 2012, Key Engineering Materials, 504-506, 1135 (congrès ESAFORM 2012),
- Boufarguine, M., Guinault, A., Miquelard‐Garnier, G., & Sollogoub, C. (2012). PLA/PHBV Films with Improved Mechanical and Gas Barrier Properties. Macromolecular Materials and Engineering.
- Guinault, A., Menary, G. H., Courgneau, C., Griffith, D., Ducruet, V., Miri, V., & Sollogoub, C. (2011, May). The effect of the stretching of PLA extruded films on their crystallinity and gas barrier properties. In AIP Conference Proceedings (Vol. 1353, p. 826) (congress ESAFORM 2011).
- Tri, P. N., Guinault, A., & Sollogoub, C. (2012). Élaboration et propriétés des composites polypropylène recyclé/fibres de bambou. Matériaux & Techniques, 100(5), 413-423.
- Courgneau, C., Domenek, S., Lebossé, R., Guinault, A., Avérous, L., & Ducruet, V. (2012). Effect of crystallization on barrier properties of formulated polylactide. Polymer International, 61(2), 180-189.
- Guinault, A., Sollogoub, C., Ducruet, V., & Domenek, S. (2012). Impact of crystallinity of poly (lactide) on helium and oxygen barrier properties. European Polymer Journal, 48(4), 779-788.