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  Correlative analysis of specific compatibilization in composites by coupling in situ X-ray scattering and mechanical tensile testing

Seidt, B., Samsoninkova, V., Hanßke, F., Gjardy, R. A., Fratzl, P., Börner, H. G., et al. (2020). Correlative analysis of specific compatibilization in composites by coupling in situ X-ray scattering and mechanical tensile testing. Frontiers in Materials, 6: 348. doi:10.3389/fmats.2019.00348.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-9038-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-9039-8
Genre: Journal Article

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 Creators:
Seidt, Britta1, Author              
Samsoninkova, Valeria, Author
Hanßke, Felix, Author
Gjardy, Ralph André1, Author              
Fratzl, Peter2, Author              
Börner, Hans G., Author
Wagermaier, Wolfgang1, Author              
Affiliations:
1Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863296              
2Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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Free keywords: wide and small angle X-ray scattering, peptide-polymer conjugate, structure-function relationships, interface stabilization, functional material
 Abstract: In this study, a bio-inspired hybrid material is investigated by in situ X-ray scattering experiments in combination with mechanical tensile testing. The material is composed of nanometer-sized spherical magnesium fluoride particles which are linked via material-specific peptide poly(ethylene glycol)-PEG conjugates to a semi-crystalline poly(ethylene oxide) PEO matrix. Mechanically relevant changes in crystal size and orientation in the PEO matrix are followed by wide angle X-ray scattering during the application of tensile stress. The amorphous phase of PEO is stabilized by the surface-engineered MgF2 nanoparticles, leading to increased Young's modulus and tensile strength. Furthermore, small angle X-ray scattering experiments allowed the identification of a layer on the MgF2 particle surfaces, which increases in thickness with the conjugate amount and leads to suppression of the agglomeration of MgF2 nanoparticles. In conclusion, the use of selected peptide-PEG conjugates tailored to link MgF2 particles to a PEO matrix successfully mimics the biological principle of interface polymers and suggests new directions for material fabrication for bio-applications.

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Language(s): eng - English
 Dates: 2020-01-282020
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.3389/fmats.2019.00348
PMID: 0583
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Title: Frontiers in Materials
  Abbreviation : Front. Mater.
Source Genre: Journal
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Publ. Info: Lausanne : Frontiers Media
Pages: - Volume / Issue: 6 Sequence Number: 348 Start / End Page: - Identifier: ISSN: 2296-8016