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Impact of initial solvent on thermal stability and mechanical properties of recombinant spider silk films

Title data

Spieß, Kristina ; Ene, Roxana ; Keenan, Caroline D. ; Senker, Jürgen ; Kremer, Friedrich ; Scheibel, Thomas:
Impact of initial solvent on thermal stability and mechanical properties of recombinant spider silk films.
In: Journal of Materials Chemistry. Vol. 21 (21 September 2011) Issue 35 . - pp. 13594-13604.
ISSN 1364-5501
DOI: https://doi.org/10.1039/c1jm11700a

Official URL: Volltext

Abstract in another language

Spider silk fibers are one of the most remarkable biopolymers displaying a unique combination of mechanical properties, biocompatibility and biodegradability. The recombinant production of spider silk proteins now allows the processing of silk proteins into novel materials with the aim of future applications. Here, we analyzed films made of a recombinantly produced, engineered spider silk protein with a sequence derived from the dragline silk protein ADF4 of the European garden spider Araneus diadematus. An influence of different initial solvents (aqueous buffer, hexafluoro-2-propanol and formic acid) on certain film properties was identified in as cast as well as methanol post-treated films: while no significant effects on the films’ thermal stability were observed, a significant influence on their mechanical properties could be shown. Interestingly, solvent-induced effects were sustained after methanol post-treatment and could be correlated with the presence and arrangement of secondary structure elements. Insights into molecular orientation of individual structural elements within the films upon applied load were revealed by combined polarized IR spectroscopy and mechanical measurements.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Der Eintrag wurde zunächst online veröffentlicht am 08.08.2011
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry III > Chair Anorganic Chemistry III - Univ.-Prof. Dr. Jürgen Senker
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Biomaterials
Faculties > Faculty of Engineering Science > Chair Biomaterials > Chair Biomaterials - Univ.-Prof. Dr. Thomas Scheibel
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry III
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Advanced Fields > Molecular Biosciences
Profile Fields > Advanced Fields > Polymer and Colloid Science
Profile Fields > Emerging Fields > Food and Health Sciences
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Emerging Fields
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 01 Jul 2015 10:00
Last Modified: 26 Nov 2015 10:51
URI: https://eref.uni-bayreuth.de/id/eprint/15590