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Self‐Healing Polymer Networks Based on Reversible Michael Addition Reactions
Author(s) -
Kuhl Natascha,
Geitner Robert,
Bose Ranjita K.,
Bode Stefan,
Dietzek Benjamin,
Schmitt Michael,
Popp Jürgen,
Garcia Santiago J.,
van der Zwaag Sybrand,
Schubert Ulrich S.,
Hager Martin D.
Publication year - 2016
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600353
Subject(s) - thermogravimetric analysis , michael reaction , differential scanning calorimetry , polymer , raman spectroscopy , polymer chemistry , materials science , self healing , rheology , self healing material , chemical engineering , chemistry , composite material , organic chemistry , optics , catalysis , thermodynamics , physics , medicine , alternative medicine , pathology , engineering
A new polymeric material utilizing a highly efficient as well as reversible thiol‐ene click reaction is presented. For this purpose, a trithiol is reacted with a bis benzylcyanoacetamide derivative resulting in the formation of a dynamic polymer network. The self‐healing ability of this novel material is tested by scratch healing experiments. Healing is found to take place from 60 °C onward. The underlying healing mechanism is studied in detail using temperature‐dependent Raman spectroscopy confirming the reversible opening of the thiol‐ene adducts. Additionally, the thermal and mechanical properties are investigated by differential scanning calorimetry, thermogravimetric analysis, and rheological measurements proving the network formation as well as its reversibility during the thermal treatment.