Print Email Facebook Twitter Understanding the molecular mechanisms involved in the interfacial self-healing of supramolecular rubbers Title Understanding the molecular mechanisms involved in the interfacial self-healing of supramolecular rubbers Author Bose, R.K. Garcia Espallargas, S.J. Van der Zwaag, S. Faculty Aerospace Engineering Department Aerospace Structures & Materials Date 2013-06-16 Abstract Supramolecular rubbers based on 2-aminoethylimidazolidone and fatty acids with epoxy crosslinks have been shown to self-heal via multiple hydrogen bonding sites. In this work, several tools are used to investigate the molecular mechanisms taking place at the interface to understand cohesive healing in these polymers. The quantification of self-healing was performed via a tapered double cantilever beam (TDCB) geometry. The TDCB geometry is especially amenable to studying multiple healing cycles due to the fracture toughness, and subsequently healing efficiencies being independent of crack length. Healing was carried out for multiple fracturehealing cycles and varying fracture testing experimental parameters to track the change in efficiency of interfacial healing. Strain rate and rate of crack closure are both shown to affect the self-healing efficiency. Subject supramolecular rubbersself-healing efficiencytapered double cantilever beamrheology To reference this document use: http://resolver.tudelft.nl/uuid:61ca4116-9731-420d-bbf9-516a4a3be313 Publisher Magnel Laboratory for Concrete Research ISBN 9789082073713 Source uuid:3078d20c-2173-4c13-a4d7-106207c78577 Source ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Author(s) Files PDF Bose_2013.pdf 567.15 KB Close viewer /islandora/object/uuid:61ca4116-9731-420d-bbf9-516a4a3be313/datastream/OBJ/view