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

Titelangaben

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

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

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: spider silk; layered silicates; bio-nanocomposites; barrier coatings; water-based packaging coatings
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien > Lehrstuhl Biomaterialien - Univ.-Prof. Dr. Thomas Scheibel
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Advanced Fields > Molekulare Biowissenschaften
Profilfelder > Emerging Fields
Profilfelder > Emerging Fields > Lebensmittel- und Gesundheitswissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 22 Sep 2016 07:56
Letzte Änderung: 22 Sep 2016 07:56
URI: https://eref.uni-bayreuth.de/id/eprint/34759