Publications
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Biodegradable polymer networks via triazolinedione-crosslinking of oleyl-functionalized poly(epsilon-caprolactone) Ghent University
Self-Healing in Mobility-Restricted Conditions Maintaining Mechanical Robustness: Furan–Maleimide Diels–Alder Cycloadditions in Polymer Networks for Ambient Applications Vrije Universiteit Brussel
Two reversible polymer networks, based on Diels–Alder cycloadditions, are selected to discuss the opportunities of mobility-controlled self-healing in ambient conditions for which information is lacking in literature. The main methods for this study are (modulated temperature) differential scanning alorimetry, microcalorimetry, dynamic rheometry, dynamic mechanical analysis, and kinetic simulations. The reversible network 3M-3F630 is chosen to ...
Multifunctional Membranes for Solvent Resistant Nanofiltration and Pervaporation Applications Based on Segmented Polymer Networks KU Leuven Ghent University
Hydrophilic bis(acrylate)-terminated poly(ethylene oxide) was used as macromolecular cross-linker of different hydrophobic polyacrylates for the synthesis of amphiphilic segmented polymer networks (SPNs). Multifunctional composite membranes with thin SPN toplayers were prepared by in situ polymerization. As the Support consisted of hydrolyzed polyacrylonitrile, the high chemical resistance of the composite membrane allowed applications of the ...
Tetraarylborate polymer networks as single-ion conducting solid electrolytes KU Leuven
A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported. Sonogashira polymerizations using tetrakis(4-iodophenyl)borate, tetrakis(4-iodo-2,3,5,6-tetrafluorophenyl)borate and tetrakis(4-bromo-2,3,5,6-tetrafluorophenyl)borate delivered highly cross-linked polymer networks with both 1,4-diethynylbeznene and a tri(ethylene glycol) substituted derivative. ...
Telechelic sequence-defined oligoamides : their step-economical synthesis, depolymerization and use in polymer networks Ghent University
The application of sequence-defined macromolecules in material science remains largely unexplored due to their challenging, low yielding and time-consuming synthesis. This work first describes a step-economical method for synthesizing unnatural sequence-defined oligoamides through fluorenylmethyloxycarbonyl chemistry. The use of a monodisperse soluble support enables homogeneous reactions at elevated temperature (up to 65 C-degrees), leading to ...
Combining reversible and permanent bonds in interpenetrating and partially reversible polymer networks for toughening and healing of thermosets Vrije Universiteit Brussel
Materials get damaged during use. To prevent or at least postpone failure, the size of the structure is taken larger than needed for expected use. However, this safety factor makes objects larger, heavier and more taxing on nature than necessary. Lately, researchers have focussed on damage recovery and various self-healing strategies have been developed. Amongst these, healing capability has been introduced in polymers through the use of ...
polymer networks by molecular dynamics simulation: formation, thermal, structural and mechanical properties KU Leuven
A molecular dynamics simulation method is presented and used in the study of the formation of polymer networks. We study the formation of networks representing the methylene repeating units as united atoms. The network formation is accomplished by cross-linking polymer chains with dedicated functional end groups. The simulations reveal that during the cross-linking process, initially branched molecules are formed before the gel point; ...
Time-Temperature-Transformation, Temperature-Conversion-Transformation, and Continuous-Heating-Transformation Diagrams of Reversible Covalent Polymer Networks Vrije Universiteit Brussel
Time-temperature-transformation (TTT), temperature-conversion-transformation (TxT), and continuous-heating-transformation (CHT) diagrams are studied for a set of reversible elastomeric and thermosetting covalent networks, based on Diels–Alder (DA) furan–maleimide cycloaddition reactions using different concentrations of furan and maleimide functional groups. Microcalorimetry, modulated temperature differential scanning calorimetry, and dynamic ...