Characterization of thermoreversible covalent networks for additive manufacturing

Guy Van Assche, Audrey Cuvellier, Robrecht René Verhelle, Seppe Terryn, Joost Brancart

Onderzoeksoutput: Meeting abstract (Book)

Samenvatting

The development of self-healing or remendable polymers has grown strongly over the past two decades. Our research in this field focuses on thermoreversible polymer networks based on the thermoreversible Diels-Alder reaction between furan (diene) and maleimide (dienophile) groups. To develop these materials and their processing for applications in self-healing (SH) soft robotic actuators, detailed knowledge about the reversible reaction kinetics and the connected chemorheological changes is required [1-3].
At high temperatures, the Diels-Alder/retro Diels-Alder reaction equilibrium shifts to a less connected state, while at low temperatures, the cycloadducts link the network together. Two stereoisomeric cycloadducts exist: a more thermodynamically stable exo-isomer, and a kinetically faster endo-isomer [4]. Detailed insight in the thermoreversible reaction kinetics is needed for optimizing temperature programs used during processing or healing. Combining this kinetic information with the conversion and temperature dependent visco-elastic behaviour facilitates the tuning of the material behaviour during processing and healing.
A comprehensive study of the thermoreversible reaction kinetics and the chemorheological changes, using DSC, microcalorimetry, FTIR and NMR spectroscopy, and dynamic rheometry. Combining kinetic information and chemorheology facilitates the careful selection of building blocks and aids development of filament extrusion and filament deposition modelling of these thermoreversible polymer networks [3,5].
Originele taal-2English
TitelCEEC-TAC5 & Medicta 2019 - Book of Abstracts
Plaats van productieGermany
UitgeverijCentral and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC)
Pagina'sOC2.05-OC2.05
Aantal pagina's1
ISBN van elektronische versie978-3-940237-59-0
StatusPublished - 27 aug 2019
Evenement5th Central and Eastern European Conference on Thermal Analysis and Calorimetry & 14th Mediterranean Conference on Calorimetry and Thermal Analysis - Roma, Italy
Duur: 27 aug 201930 aug 2019
http://www.ceec-tac.org/conf5/welcome.html

Conference

Conference5th Central and Eastern European Conference on Thermal Analysis and Calorimetry & 14th Mediterranean Conference on Calorimetry and Thermal Analysis
Verkorte titelCEEC-TAC
Land/RegioItaly
StadRoma
Periode27/08/1930/08/19
Internet adres

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