| 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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Skordos, Alexandros A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Fluorine and nitrogen doping of zinc oxide to enhance dielectric storage of PVDF based particulate compositescitations
- 2024Fluorine and nitrogen doping of zinc oxide to enhance dielectric storage of PVDF based particulate compositescitations
- 2024An evaluation of large diameter through-thickness metallic pins in compositescitations
- 2024Influence of monomer structure and catalyst concentration on topological transition and dynamic properties of dicarboxylic acid‐epoxy vitrimerscitations
- 2023Cure kinetics, glass transition advancement and chemo-rheological modelling of an epoxy vitrimer based on disulphide metathesiscitations
- 2023Online optimisation and active control of the cure process of thick composite laminatescitations
- 2022Insertion of large diameter through-thickness metallic pins in compositescitations
- 2020Functional nanocomposites for energy storage: chemistry and new horizonscitations
- 2012Cure kinetics, glass transition temperature development, and dielectric spectroscopy of a low temperature cure epoxy/amine systemcitations
- 2012RTM processing and electrical performance of carbon nanotube modified epoxy/fibre compositescitations
- 2012RTM processing and electrical performance of carbon nanotube modified epoxy/fibre compositescitations
- 2010Percolation threshold of carbon nanotubes filled unsaturated polyesterscitations
- 2009Monitoring Cure in Epoxies Containing Carbon Nanotubes with an Optical-Fiber Fresnel Refractometercitations
- 2009Dielectric monitoring of carbon nanotube network formation in curing thermosetting nanocompositescitations
- 2009Monitoring dispersion of carbon nanotubes in a thermosetting polyester resincitations
- 2008Thermomechanical analysis of a toughened thermosetting system.citations
- 2008Stochastic simulation of woven composites formingcitations
- 2007A simplified rate dependent model of forming and wrinkling of pre-impregnated woven compositescitations
- 2007Effect of tufting on the response of non crimp fabric composites.
- 2006Optimisation of Sheet Forming for Textile Composites using variable Peripheral Pressure.
- 2005Drape optimization in woven composites manufacture.
- 2004Inverse heat transfer for optimization and on-line thermal properties estimation in composites curing.citations
- 2002A novel strain sensor based on the campaniform sensillum of insects.citations
Places of action
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article
Influence of monomer structure and catalyst concentration on topological transition and dynamic properties of dicarboxylic acid‐epoxy vitrimers
Abstract
This study delineates the dependence of thermophysical behavior of acid‐epoxy vitrimers on their formulation. The stress relaxation due to the bond exchange reaction and the glass transition temperature of acid epoxy vitrimers are investigated, with respect to the influence of catalyst content and acid chain length. This is carried out for a range of dicarboxylic acids and catalyst concentrations formulated and characterized using calorimetry and dynamic mechanical analysis. The influence of acid chain length on the bond exchange rate, topological transition, and glass transition temperatures of the vitrimers is found to be significant. The activation energy of the exchange reaction varies over a wide range from 73 to 104 kJ/mol and the topology freezing temperature from 66 to 136°C with the behavior governed by the interplay between crosslinking density, network flexibility and density and distance of functional groups, with an increase of catalyst concentration leading to lower topological transition temperature and the dependence on chain length showing non‐monotonic behavior. The glass transition decreases by about 30°C as the carbon chain length increases from 6 to 14 carbons due to enhanced monomer flexibility and is not affected by the concentration of catalyst.