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Structural Insights into Water-Based Spider Silk Protein−Nanoclay Composites with Excellent Gas and Water Vapor Barrier Properties

Title data

Doblhofer, Elena ; Schmid, Jasmin ; Rieß, Martin ; Daab, Matthias ; Suntinger, Magdalena ; Habel, Christoph ; Bargel, Hendrik ; Hugenschmidt, Christoph ; Rosenfeldt, Sabine ; Breu, Josef ; Scheibel, Thomas:
Structural Insights into Water-Based Spider Silk Protein−Nanoclay Composites with Excellent Gas and Water Vapor Barrier Properties.
In: ACS Applied Materials & Interfaces. (7 September 2016) .
ISSN 1944-8252
DOI: https://doi.org/10.1021/acsami.6b08287

Abstract in another language

Nature reveals a great variety of inorganic–organic composite materials exhibiting good mechanical properties, high thermal and chemical stability, and good barrier properties. One class of natural bio-nanocomposites, e.g. found in mussel shells, comprises protein matrices with layered inorganic fillers. Inspired by such natural bio-nanocomposites, the cationic recombinant spider silk protein eADF4(κ16) was processed together with the synthetic layered silicate sodium hectorite in an all-aqueous setup. Drop-casting of this bio-nanocomposite resulted in a thermally and chemically stable film reflecting a one-dimensional crystal. Surprisingly, this bio-nanocomposite coating was, though produced in an all-aqueous process, completely water insoluble. Analyzing the structural details showed a low inner free volume due to the well-oriented self-assembly/alignment of the spider silk proteins on the nanoclay surface, yielding high oxygen and water vapor barrier properties. The here demonstrated properties in combination with good biocompatibility qualify this new bio-nanocomposite to be used in packaging applications

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: spider silk; layered silicates; bio-nanocomposites; barrier coatings; water-based packaging coatings
Institutions of the University: Faculties
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
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Polymer and Colloid Science
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Advanced Fields > Molecular Biosciences
Profile Fields > Emerging Fields
Profile Fields > Emerging Fields > Food and Health Sciences
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 22 Sep 2016 07:56
Last Modified: 22 Sep 2016 07:56
URI: https://eref.uni-bayreuth.de/id/eprint/34759