ORGANISATION/COMPANYUniversité de Lorraine
RESEARCH FIELDChemistry › Inorganic chemistryEngineering › Thermal engineeringPhysics › Condensed matter properties
RESEARCHER PROFILEFirst Stage Researcher (R1)
APPLICATION DEADLINE01/05/2018 12:00 - Europe/Brussels
LOCATIONFrance › Epinal
TYPE OF CONTRACTTemporary
HOURS PER WEEK40
OFFER STARTING DATE01/10/2018
The fouling of heat exchanger surfaces with dairy and egg products is a serious health risk. As no satisfactory solution has been developed until now, this project consists in developing materials that have both good food compatibility and anti-fouling properties, and that are resistant to cleaning procedures. In this context, it is proposed to replace stainless steel with carbon-based hydrophobic materials to reduce fouling while improving the energy efficiency of the exchangers. Moreover, some of these materials will also be used to develop Slippery Liquid Infused Porous Surface (SLIPS) biomimetic surfaces with low contact angle hysteresis, which have a high potential for anti-fouling applications.
Work to be performed :
The thesis will consist in designing carbon-based antifouling heat exchangers , being at the same time thermal conductor, very resistant to acids and bases, and non-toxic. Three types of materials will be prepared and characterized: (i) bi-continuous hydrophobic composites based on graphite foams of very high thermal conductivity ; (ii) vitreous-graphite carbon composites with controlled surface energy and roughness; and (iii) mesoporous carbons with controlled porosity [3-4] to become bases of SLIPS, and treated to become superhydrophobic [5-6]. These studies will therefore require syntheses from thermosetting resins, heat treatments in ovens under inert atmosphere, as well as chemical or physical surface treatments. An essential part of the work will also be devoted to characterisation through a large number of physicochemical analysis techniques (composition, structure, porous texture, surface properties, thermal conductivity, ...) in order to go back to the synthesis and thus to optimise the materials. Numerous exchanges with the consortium partners will be planned for estimating the durability of the materials in real conditions through cleaning-in-place procedures.
 Wang, Q.; Han, X. H.; Sommers, A.; Park, Y.; T'Joen, C.; Jacobi, A. A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks. International Journal of Refrigeration 2012, 35, 7-26.
 Jana, P.; Palomo del Barrio, E.; Fierro, V.; Medjahdi, G.; Celzard, A. Design of carbon foams for seasonal solar thermal energy storage. Carbon 2016, 109, 771-786.
 Libbrecht, W.; Verberckmoes, A.; Thybaut, J. W.; Van Der Voort, P.; De Clercq, J. Soft templated mesoporous carbons: Tuning the porosity for the adsorption of large organic pollutants. Carbon 2017, 116, 528-546.
 Wickramaratne, N. P.; Jaroniec, M. Phenolic resin-based carbons with ultra-large mesopores prepared in the presence of poly(ethylene oxide)-poly(butylene oxide)-poly(ethylene oxide) triblock copolymer and trimethyl benzene. Carbon 2013, 51, 45-51.
 Jana, P.; Palomo del Barrio, E.; Fierro, V.; Celzard, A. Undercooling enhancement of phase-change materials encapsulated in hydrophobised graphitic carbon foams. 2017, In preparation.
 Delgado-Sánchez, C.; Letellier, M.; Fierro, V.; Chapuis, H.; Gérardin, C.; Pizzi, A.; Celzard, A. Hydrophobisation of tannin-based foams by covalent grafting of silanes. Industrial Crops and Products 2016, 92, 116-126.
ANR grant. Please contact us imperatively before end of April 2018
Master diploma completed in 2018 with excellent marks and ranking (top 10%).
Selection based on application forms (CV, motivation letter, list of former research works, copy of diplomas, marks and ranking obtained during the curriculum), then Skype interview and/or personal meeting.
Web site for additional job details
Required Research Experiences
RESEARCH FIELDChemistry › Inorganic chemistry
YEARS OF RESEARCH EXPERIENCE1 - 4
REQUIRED EDUCATION LEVELChemistry: Master Degree or equivalent
REQUIRED LANGUAGESENGLISH: ExcellentFRENCH: Good
The candidate will join the "Biosourced materials" team hosted on the premises of ENSTIB, in Epinal. He/she will have completed training in solid-state chemistry or materials science. He/she will have to demonstrate natural ease and effectiveness with modern analytical techniques on which he/she will be trained to become rapidly independent.
A taste for the physicochemistry underlying the phenomena under study (adhesion, wetting, adsorption, pyrolysis, ...) will be a real asset. The candidate will have to be dynamic, curious and perseverant to realise the multiple syntheses, characterizations and interpretations of the results.
EURAXESS offer ID: 275129
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