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Weak reversible cross links may decrease the strength of aligned fiber bundles

Autor(en)
S. Soran Nabavi, Markus A. Hartmann
Abstrakt

Reversible cross-linking is an effective strategy to specifically tailor the mechanical properties of polymeric materials that can be found in a variety of biological as well as man-made materials. Using a simple model in this paper the influence of weak, reversible cross-links on the mechanical properties of aligned fiber bundles is investigated. Special emphasis in this analysis is put on the strength of the investigated structures. Using Monte Carlo methods two topologies of cross-links exceeding the strength of the covalent backbone are studied. Most surprisingly only two cross-links are sufficient to break the backbone of a multi chain system, resulting in a reduced strength of the material. The found effect crucially depends on the ratio of inter-to intra-chain cross-links and, thus, on the grafting density that determines this ratio.

Organisation(en)
Computergestützte Physik und Physik der Weichen Materie
Externe Organisation(en)
Montanuniversität Leoben
Journal
Soft Matter
Band
12
Seiten
2047-2055
Anzahl der Seiten
9
ISSN
1744-683X
DOI
https://doi.org/10.1039/c5sm02614h
Publikationsdatum
2016
Peer-reviewed
Ja
ÖFOS 2012
103015 Kondensierte Materie
Schlagwörter
ASJC Scopus Sachgebiete
Condensed Matter Physics, Allgemeine Chemie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/3f0fa034-f8d7-4016-b05e-3496f8d25250