| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Van Assche, Guy
Vrije Universiteit Brussel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (50/50 displayed)
- 2024Designing flexible and self-healing electronics using hybrid carbon black/nanoclay composites based on Diels-Alder dynamic covalent networkscitations
- 2024Construction of furan-maleimide Diels-Alder reversible network cure diagrams: modelling and experimental validation
- 2024Diels-Alder Network Blends as Self-Healing Encapsulants for Liquid Metal-Based Stretchable Electronicscitations
- 2024Modelling of diffusion-controlled Diels-Alder reversible network formation and its application to cure diagrams
- 2023Differentiating between the diffusion of water and ions from aqueous electrolytes in organic coatings using an integrated spectro-electrochemical techniquecitations
- 2023Fast Self-Healing at Room Temperature in Diels–Alder Elastomerscitations
- 2023Effect of Secondary Particles on Self-Healing and Electromechanical Properties of Polymer Composites Based on Carbon Black and a Diels–Alder Networkcitations
- 2021The Influence of the Furan and Maleimide Stoichiometry on the Thermoreversible Diels–Alder Network Polymerizationcitations
- 2020Self-Healing Material Design and Optimization for Soft Robotic Applications
- 2019Diffusion- and Mobility-Controlled Self-Healing Polymer Networks with Dynamic Covalent Bondingcitations
- 2019Characterisation of rapid water uptake in model coatings using instantaneous impedance
- 2017Probing the bulk heterojunction morphology in thermally annealed active layers for polymer solar cellscitations
- 2017Towards the first developments of self-healing soft robotics
- 2016Electrospinning of sacrificial nanofibers for the creation of a self-healing nanovascular network and its effect on the properties of an epoxy matrix
- 2016Thermal behaviour below and inside the glass transition region of a submicron P3HT layer studied by fast scanning chip calorimetrycitations
- 2015Isocyanate free condensed tannin-based polyurethanescitations
- 2015Isothermal Crystallization of PC61BM in Thin Layers Far below the Glass Transition Temperaturecitations
- 2013Ester-functionalized poly(3-alkylthiophene) copolymers: Synthesis, physicochemical characterization and performance in bulk heterojunction organic solar cellscitations
- 2013Optimization of Extrusion Parameters for Preparing PCL-Layered Silicate Nanocomposites Supported by Modeling of Twin-Screw Extrusioncitations
- 2012The effect of nano-sized filler particles on the crystalline-amorphous interphase and thermal properties in polyester nanocompositescitations
- 2012Analysing organic solar cell blends at thousands of degrees per second
- 2012Improved Photovoltaic Performance of a Semicrystalline Narrow Bandgap Copolymer Based on 4H-Cyclopenta[2,1-b:3,4-b ']dithiophene Donor and Thiazolo[5,4-d]thiazole Acceptor Unitscitations
- 2012Improved Photovoltaic Performance of a Semicrystalline Narrow Bandgap Copolymer Based on 4H-Cyclopenta[2,1-b:3,4-b ']dithiophene Donor and Thiazolo[5,4-d]thiazole Acceptor Units
- 2012Crystallization Kinetics and Morphology Relations on Thermally Annealed Bulk Heterojunction Solar Cell Blends Studied by Rapid Heat Cool Calorimetry (RHC)
- 2012The kinetic analysis of isothermal curing reaction of an epoxy resin-glassflake nanocompositecitations
- 2011Construction of the state diagram of polymer blend thin films using differential AC chip calorimetrycitations
- 2011Phase behavior of PCBM blends with different conjugated polymers
- 2011Partially miscible polystyrene/polymethylphenylsiloxane blends for nanocompositescitations
- 2011Improving The Dispersion Of Carbon Nanotubes In Polystyrene By Blending With Siloxane
- 2011Self-healing property characterization of reversible thermoset coatings
- 2011Thermal annealing of P3HT: PCBM blends for photovoltaic studies
- 2011Partially miscible polystyrene/ polymethylphenylsiloxane blends for nanocomposites
- 2011A combined mechanical, microscopic and local electrochemical evaluation of self-healing properties of shape-memory polyurethane coatings (available online)
- 2011Thermal Annealing of P3HT: PCBM Organic Photovoltaic Blends
- 2011Relations between phase diagram, kinetics of thermal annealing process, and morphological stability in polymer:fullerene blends for bulk heterojunction solar cells
- 2011Isothermal crystallisation study of P3HT:PCBM blends as used in bulk heterojunction solar cells based on fast scanning calorimetry techniques
- 2011Rheology of nanocompositescitations
- 2010Phase separation in polymer blend thin films studied by differential AC chip calorimetrycitations
- 2010RheoDSC Analysis of Hardening of Semi-Crystalline Polymers during Quiescent Isothermal Crystallizationcitations
- 2010Qualitative assessment of nanofiller dispersion in poly(epsilon-caprolactone) nanocomposites by mechanical testing, dynamic rheometry and advanced thermal analysiscitations
- 2010Isothermal crystallization kinetics of P3HT:PCBM blends by means of RHC
- 2009Theoretical analysis of carbon nanotube wetting in polystyrene nanocompositescitations
- 2009Phase Diagram of P3HT/PCBM Blends and Its Implication for the Stability of Morphologycitations
- 2009The use of nanofibers of P3HT in bulk heterojunction solar cells: the effect of order and morphology on the performance of P3HT:PCBM blends
- 2008The thermal degradation of poly(vinyl acetate) and poly(ethylene-co-vinyl acetate), Part I: Experimental study of the degradation mechanismcitations
- 2008The thermal degradation of poly(vinyl acetate) and poly(ethylene-co-vinyl acetate), Part II: Modelling the degradation kineticscitations
- 2007Reaction mechanism, kinetics and high temperature transformations of geopolymers
- 2007Formation, molecular structure and thermal properties of geopolymers
- 2006Restricted chain segment mobility in poly(amide) 6/clay nanocomposites evidenced by quasi-isothermal crystallizationcitations
- 2002Mechanistic modeling of the wall reactions in the pyrolysis of pentachloroethane
Places of action
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document
Characterisation of rapid water uptake in model coatings using instantaneous impedance
Abstract
Organic coatings are a key component in corrosion protection for a wide array of metal constructions. Breakdown of these coatings can occur due to exposure to water during prolonged periods of time. The water uptake of organic coatings has been studied extensively in literature [1]. It is understood to proceed in three different steps, the first of which is identified as homogeneous diffusion, after which saturation occurs, and later heterogeneous water accumulation and coating breakdown. The water uptake in these coatings can be studied with electrochemical impedance spectroscopy (EIS) [2]; the coating capacitance is followed as a function of time, and through the extraction of the dielectric constant of the coating the water content in the coating is estimated through the Brasher-Kingsbury formula. Recently, a study was published that challenged the validity of this equation [3], since it does not take into account the swelling of the coating. <br/><br/>In this work, the initial water uptake for model coatings is studied through odd random phase electrochemical impedance spectroscopy (ORP-EIS) [4]. The model coatings are based on acrylic and/or methacrylic backbones. Several different monomers are used to form the polymer matrix of different model coatings, phosphonic acid or carboxylic acid are used as adhesion promoters. Another batch of model coatings feature no adhesion promotor as a comparison. From gravimetrical measurements it is found that the first step in the water uptake from these coatings, Fickian diffusion, already occurs within the first 20 to 30 minutes. Therefore, it is crucial that the water uptake is measured immediately after immersion of the coating in solution. As the coating properties are changing rapidly, non-stationary behaviour is observed. This non-stationary behaviour can be quantified using the time-resolved instantaneous impedance calculation [5] from ORP-EIS measurements, and the instantaneous coating capacitance can be found through electrical equivalent circuit fitting of the results. The results of the different studied coatings are then compared. As a secondary objective, the most fitting equation between the observed coating capacitance and water uptake in this case study is searched for. <br/><br/>