AgreenSkills session, year: 2nd session, 2014
Receiving laboratory: Food and Biobased Research Institute, Netherlands
Country of origin : France
Formulation and functionality testing of novel bio-based materials and products
There is an increasing number of bio-based products and materials in the market today that could offer valuable alternatives for existing petrochemical products. However, it was established that the European market of bio-based products suffers from a lack of standardization concerning testing methods of these new materials. As a consequence, quality control data provided by the producers of the bio-based products are usually limited to only a few properties of these new materials. Therefore, the mobility project focusses on testing functionality of selected new bio-based products by (a) adapting appropriate existing standard test methods and (b) by developing additional testing methods that take into account the bio-based products specificities. Ultimately, this should validate their ability to substitute conventional materials in the European market.
I started my research career by a master’s degree in organic chemistry. During this first experience, I worked on the quantification of essential oils present in some Apiaceae seeds such as cumin, caraway and coriander. Then, the identification of main terpenes present in these essential oils was performed. During the PhD, my research project was focused on the synthesis of optically active sillylated derivatives which have been used as building blocks in the synthesis of non-natural steroids.. Thereafter, considering both the health, environmental and economic issues related to the use of petrochemicals in industry, I turned my interest to the biomass derivatives valorisation using “green” processes. For this, my postdoctoral research project dealt with the catalytic depolymerisation of starch and cellulose in order to produce natural chelating agents. Since 2009, I hold a research position in Polyphenols & Interactions group (UMR 1083, INRA Montpellier). My research topic consists in developing synthesis routes and pathways in order to transform natural polyphenols (tannins and phenolic acids) into bio-based polymers and especially epoxy polymers. This research project attempts to address current concerns related to the dangers of bisphenol A by substituting it with natural phenolic compounds. Thus, my research project comprises two main parts. The first one consists to synthesize bio-based epoxy prepolymers by chemical and chemo-enzymatic pathways. The second part deals with the formulation of these prepolymers into epoxy polymers followed by the characterization (chemical, thermal and mechanical) of the resulting polymers.
– C. Aouf, S. Benyahya, A. Esnouf, S. Caillol, B. Boutevin, H. Fulcrand.2014
Tara tannins as phenolic precursors of thermosetting epoxy resins. European Polymer Journal, 55, 186-198.
– S. Benyahya, C. Aouf, S. Caillol, B. Boutevin, JP. Pascault, H. Fulcrand. 2014
Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins. Industrial Crops and Products, 53, 296-307.
– C. Aouf, E. Durand, J. Lecomte, M-C. Figueroa-Espinoza, E. Dubreucq, H. Fulcrand, P. Villeneuve. 2014
The use of lipases as biocatalysts for the epoxidation of fatty acids and phenolic compounds. Review Article, Green Chemistry, 16, 1740-1754.
-L. Rouméas, C. Aouf, E. Dubreucq, H. Fulcrand. 2013
Depolymerisation of condensed tannins in ethanol as a gateway to biosourced phenolic synthons. Green chemistry, 15, 3268-3275.
-C. Aouf, H. Nouailhas, M. Fache, S. Caillol, B. Boutevin, H. Fulcrand. 2013
Multi-functionalization of gallic acid. Synthesis of a novel biobased epoxy resin. European Polymer Journal, 49, 1185-1195.
– C. Aouf, N. Galy, M. Santelli. 2013
Eviedence of concerted processes in the course of homoallenylic transposition. Tetrahedron, 69, 1345-1353.
-C. Aouf, C. Le Guernevé, H. Fulcrand. 2013
Study of the O-glycidylation of natural phenolic compounds. The relationship between the phenolic structure and the reaction mechanism. Tetrahedron, 69, 1345-1353.
-C. Aouf, J. Lecomte, P. Villeneuve, E. Dubreucq, H. Fulcrand. 2012
Chemo-enzymatic functionalization of gallic and vanillic acids: synthesis of bio-based epoxy resins prepolymers. Green Chemistry, 14, 2328-2336.
-H. Nouailhas, C. Aouf, C. Le Guernevé, S. Caillol, B. Boutevin, H. Fulcrand. 2011
Synthesis and properties of bio-based epoxy resins. Part1. Glycidylation of flavonoids by epichlorohydrin. Journal of Polymer Science Part A-Polymer Chemistry, 49, 2261-2270.