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Reversing adhesion: A triggered release self-reporting adhesive

Schenzel, A.M.; Klein, C.O.; Rist, K.; Moszner, N.; Barner-Kowollik, C.

Abstract: Here, the development of an adhesive is reported – generated via free radical polymerization – which can be degraded upon thermal impact within minutes. The degradation is based on a stimuli responsive moiety (SRM) that is incorporated into the network. The selected SRM is a hetero Diels-Alder (HDA) moiety that features three key properties. First, the adhesive can be degraded at relatively low temperatures (≈80 °C), second the degradation occurs very rapidly (less than 3 min), and third, the degradation of the network can readily be analyzed and quantified due to its self-reporting nature. The new reversible self-reporting adhesion system is characterized in detail starting from molecular studies of the retro HDA reaction. Moreover, the mechanical properties of the network, as well as the adhesion forces, are investigated in detail and compared to common methacrylate-based systems, demonstrating a significant decrease in mechanic stability at elevated temperatures. The current study thus represents a significant advance of the current state of the art for debonding on demand adhesives, making the system interesting for several fields of application including dental adhesives.

Zugehörige Institution(en) am KIT Institut für Biologische Grenzflächen (IBG)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1002/advs.201500361
ISSN: 2198-3844
URN: urn:nbn:de:swb:90-533963
KITopen ID: 1000053396
HGF-Programm 47.02.03; LK 01
Erschienen in Advanced Science
Band 3
Heft 3
Seiten 1500361/1-5
Schlagworte degradable networks, hetero Diels–Alder chemistry, polymer chemistry, self-reporting materials
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