With the advent of self-healing (SH) materials a new vision of material science had been accomplished, together with the exploitation of specific chemical and physical principles[1]. Thus e.g. fast crosslinking and crack-repair after damage has been optimized via encapsulation and embedding of reactive components; [2] the application of supramolecular bonds[3] has enabled multiple self-healing taking into account the relevant timescales of self-healing[4]. The current presentation addresses principles of self-healing polymers taking place at the site of damage specifically via stress-induced chemical reactions, in particular "click"-based chemistries to induce self-healing responses via force-induced healing. By introducing supramolecular healing principles mechanically stronger materials are obtained, displaying multiple healing-cycles together with eg. graphene-based nanofillers[5] bearing attached catalytic systems.
Acknowledgements. Financial support from the DFG (project Bi 1337-1/8) within the framework of SPP 1568 (Design and Generic Principles of Self-Healing Polymers) and the EU-project IASS (within EU-FP7) are gratefully acknowledged.
[1] a) W. H. Binder, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2013, p. 425. b) Special Issue on "Self-healing polymers", Polymer July 2015.
[2] a)M. Gragert, M. Schunack, W. H. Binder, Macromol. Rapid Commun. 2011, 32, 419-425; b)M. Schunack, M. Gragert, D. Döhler, P. Michael, W. H. Binder, Macromol. Chem. Phys. 2012, 213, 205-214; c)L. Guadagno, M. Raimondo, C. Naddeo, P. Longo, A. Mariconda, W. Binder, H. , Smart Mater. Struct. 2014, 23, 045001; d)D. Döhler, P. Zare, W. H. Binder, Polymer Chemistry 2014, 5, 992-1000.
[3] a) F. Herbst, D. Döhler, P. Michael, W. H. Binder, Macromol. Rapid Commun. 2013, 34, 203-220. b) S. Chen; M. Mahmood; M. Beiner; W. H. Binder. Self-Healing materials from V- and H-shaped supramolecular architectures Angew. Chem. Int. Ed.2015, DOI: 10.1002/anie.201504136R1.
[4] J. Akbarzadeh, S. Puchegger, A. Stojanovic, H. O. K. Kirchner, W. H. Binder, S. Bernstorff, P. Zioupos, H. Peterlik, Bioinspired, Biomimetic and Nanobiomaterials 2014, 3 (3), 123-130
[5] a) A. Shaygan-Nia, S. Rana, D. Döhler, X. Noirfalise, A. Belfiore, W. H. Binder, Chem. Commun.2014, 50, 15374-15377. b) A. S. Nia, S. Rana, ,D. Döhler, F. Jirsa, A. Meister, L. Guadagno, E. Koslowski, M. Bron, W. H. Binder, Chemistry A European Journal, 2015 (in press).