Issue 3, 2014
From the journal:

Polymer Chemistry

Introduction of self-healing properties into covalent polymer networks via the photodissociation of alkoxyamine junctions

Siham Telitel,a   Yoshifumi Amamoto,b   Julien Poly,*a   Fabrice Morlet-Savary,a   Olivier Soppera,a   Jacques Lalevéea  and  Krzysztof Matyjaszewskib  

* Corresponding authors

a Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 – CNRS/UHA, 15 rue Jean Starcky, 68057 Mulhouse, France
E-mail: julien.poly@uha.fr

b Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA

Abstract

Poly(n-butyl acrylate) networks were prepared by conducting click chemistry between dialkyne alkoxyamines and azide functionalized star-like oligomers synthesized by ATRP. The dissociation of alkoxyamines under UV irradiation was exploited to cleave the junctions between the network of star-like precursors. The efficiency of the cleavage, generating dangling nitroxides and increased mobility of poly(n-butyl acrylate) segments, was examined by ESR monitoring. The network progressively reformed after irradiation via the recombination of radical species. These reactions resulted in self-healing behavior, which was observed by AFM.

Graphical abstract: Introduction of self-healing properties into covalent polymer networks via the photodissociation of alkoxyamine junctions

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Article information

DOI
https://doi.org/10.1039/C3PY01162C
Article type
Paper
Submitted
28 Aug 2013
Accepted
26 Sep 2013
First published
26 Sep 2013

Polym. Chem., 2014,5, 921-930

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Introduction of self-healing properties into covalent polymer networks via the photodissociation of alkoxyamine junctions

S. Telitel, Y. Amamoto, J. Poly, F. Morlet-Savary, O. Soppera, J. Lalevée and K. Matyjaszewski, Polym. Chem., 2014, 5, 921 DOI: 10.1039/C3PY01162C

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