Abstract：
:Reversible polymeric networks can show self-healing properties due to their ability to reassemble after application of stress and fracture, but typically the relation between equilibrium molecular dynamics and self-healing kinetics has been difficult to disentangle. Here we present a well-characterized, self-assembled bulk network based on supramolecular assemblies, that allows a clear distinction between chain dynamics and network relaxation. Small angle x-ray scattering and rheological measurements provide evidence for a structurally well-defined, dense network of interconnected aggregates giving mechanical strength to the material. Different from a covalent network, the dynamic character of the supramolecular bonds enables macroscopic flow on a longer time scale and the establishment of an equilibrium structure. A combination of linear and nonlinear rheological measurements clearly identifies the terminal relaxation process as being responsible for the process of self-healing.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yan T,Schröter K,Herbst F,Binder WH,Thurn-Albrecht Tdoi
10.1038/srep32356subject
Has Abstractpub_date
2016-09-01 00:00:00pages
32356issn
2045-2322pii
srep32356journal_volume
6pub_type
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