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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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Garcia, Santiago J.
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Gas-phase deposited nanolayers guard organic microparticles in polymer matrices for active corrosion protection at damagescitations
- 2024Effect of delayed inhibitor supply on AA2024-T3 intermetallic activitycitations
- 2024Effect of delayed inhibitor supply on AA2024-T3 intermetallic activity: A local in situ analysis with reflected microscopycitations
- 2024Healable Supracolloidal Nanocomposite Water-Borne Coatingscitations
- 2024Role of Molecular Water Layer State on Freezing Front Propagation Rate and Mode Studied with Thermal Imagingcitations
- 2023Small concentrations of NaCl help building stable inhibiting layers from 2,5-dimercapto-1,3,4-thiadiazole (DMTD) on AA2024-T3citations
- 2022An integral non-intrusive electrochemical and in-situ optical technique for the study of the effectiveness of corrosion inhibitioncitations
- 2022An integral non-intrusive electrochemical and in-situ optical technique for the study of the effectiveness of corrosion inhibitioncitations
- 2022Identifying interfacial failure mode in aerospace adhesive bonds by broadband dielectric spectroscopycitations
- 2022Local strain-induced energy storage as driving force for autogenous scratch closurecitations
- 2021Analysis of naturally-generated corrosion products due to chlorides in 20-year old reinforced concretecitations
- 2021When all intermetallics dealloy in AA2024-T3citations
- 2021When all intermetallics dealloy in AA2024-T3: Quantifying early stage intermetallic corrosion kinetics under immersioncitations
- 2021Analysis of naturally-generated corrosion products due to chlorides in 20-year old reinforced concrete: An elastic modulus-mineralogy characterizationcitations
- 2020Corrosion Inhibition at Scribed Locations in Coated AA2024-T3 by Cerium- and DMTD-Loaded Natural Silica Microparticles under Continuous Immersion and Wet/Dry Cyclic Exposurecitations
- 2019Interpreting electrochemical noise and monitoring local corrosion by means of highly resolved spatiotemporal real-time opticscitations
- 2019Interpreting electrochemical noise and monitoring local corrosion by means of highly resolved spatiotemporal real-time opticscitations
- 2019Reducing subjectivity in EIS interpretation of corrosion and corrosion inhibition processes by in-situ optical analysiscitations
- 2018Superabsorbent polymer additives for repeated barrier restoration of damaged powder coatings under wet-dry cycles: A proof-of-conceptcitations
- 2018A translation of the structure of mussel byssal threads into synthetic materials by the utilization of histidine-rich block copolymerscitations
- 2018A translation of the structure of mussel byssal threads into synthetic materials by the utilization of histidine-rich block copolymerscitations
- 2017Healing of a glass fibre reinforced composite with a disulphide containing organic-inorganic epoxy matrixcitations
- 2017Cerium-loaded algae exoskeletons for active corrosion protection of coated AA2024-T3citations
- 2016Healing of Early Stage Fatigue Damage in Ionomer/Fe 3 O 4 Nanoparticle Compositescitations
- 2015Connecting supramolecular bond lifetime and network mobility for scratch healing in poly(butyl acrylate) ionomers containing sodium, zinc and cobaltcitations
- 2015Acylhydrazones as reversible covalent crosslinkers for self-healing polymerscitations
Places of action
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article
Connecting supramolecular bond lifetime and network mobility for scratch healing in poly(butyl acrylate) ionomers containing sodium, zinc and cobalt
Abstract
<p>In this work, we correlate network dynamics, supramolecular reversibility and the macroscopic surface scratch healing behavior for a series of elastomeric ionomers based on an amorphous backbone with varying fractions of carboxylate pendant groups completely neutralized by Na<sup>+</sup>, Zn<sup>2+</sup> or Co<sup>2+</sup> as the counter ions. Our results based on temperature dependent dynamic rheology with simultaneous FTIR analysis clearly indicate that the effective supramolecular bond lifetime (τ<sub>b</sub>) is an important parameter to ascertain the ideal range of viscoelasticity for good macroscopic healing. The reversible coordination increased with higher valence metal ions and ionic content. Both rheological and spectroscopic analyses show a decrease in supramolecular assembly with temperature. The temperature dependent τ<sub>b</sub> was used to calculate the activation energy (E<sub>a</sub>) of dissociation for the ionic clusters. According to self-healing experiments based on macroscale surface scratching, a supramolecular bond lifetime between 10 and 100 s results in samples with complete surface scratch healing and good mechanical robustness.</p>