Date
2023-07-13Author
Koch, ChristinMüller, AnettKahlmeyer, MartinRiske, TinoMelnyk, IngaDähne, LarsKaden, DennisBaitinger, MartinFery, AndreasBöhm, StefanSubject
600 Technology 660 Chemical engineering MikrokapselFarbstoffFreisetzungFluoreszenzHärteeindruckNanometerbereichKlebstoffBruchverhaltenMetadata
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Aufsatz
Mechanically induced dye-release from polyurea microcapsules in a rubbery adhesive
Abstract
Especially in the building industry the demand for in situ monitoring concepts of adhesive joints persists. In a new approach, microcapsules filled with special dyes, are added into a rubbery adhesive. Certain stress levels within the adhesive lead to a breakage of the capsules, which release their liquid cores. This results in a detectable colour change and thus, enables non-destructive condition monitoring of the bond. Dye-filled polyurea microcapsules were produced by interfacial polymerization by varying synthesis parameters while their influence on capsule morphology and wall thickness was determined. The morphology and thermal properties of the microcapsules were characterized by scanning electron microscopy and dynamic differential calorimetry, respectively. Subsequently, the method of nanoindentation was used to study the deformation and fracture behaviour of the microcapsules. Finally, it was analysed to what extent the microcapsules break within a polymer matrix, e.g. by critical stress levels or deformations. This development is a new quality assurance method for glass façades.
Citation
In: Smart Materials and Structures Volume 32 / Number 8 (2023-07-13) eissn:1361-665XSponsorship
Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem VerlagCitation
@article{doi:10.17170/kobra-202401039317,
author={Koch, Christin and Müller, Anett and Kahlmeyer, Martin and Riske, Tino and Melnyk, Inga and Dähne, Lars and Kaden, Dennis and Baitinger, Martin and Fery, Andreas and Böhm, Stefan},
title={Mechanically induced dye-release from polyurea microcapsules in a rubbery adhesive},
journal={Smart Materials and Structures},
year={2023}
}
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2024-02-01T16:48:24Z 2024-02-01T16:48:24Z 2023-07-13 doi:10.17170/kobra-202401039317 http://hdl.handle.net/123456789/15425 Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ microcapsules dye-release fluorescence nanoindentation 600 660 Mechanically induced dye-release from polyurea microcapsules in a rubbery adhesive Aufsatz Especially in the building industry the demand for in situ monitoring concepts of adhesive joints persists. In a new approach, microcapsules filled with special dyes, are added into a rubbery adhesive. Certain stress levels within the adhesive lead to a breakage of the capsules, which release their liquid cores. This results in a detectable colour change and thus, enables non-destructive condition monitoring of the bond. Dye-filled polyurea microcapsules were produced by interfacial polymerization by varying synthesis parameters while their influence on capsule morphology and wall thickness was determined. The morphology and thermal properties of the microcapsules were characterized by scanning electron microscopy and dynamic differential calorimetry, respectively. Subsequently, the method of nanoindentation was used to study the deformation and fracture behaviour of the microcapsules. Finally, it was analysed to what extent the microcapsules break within a polymer matrix, e.g. by critical stress levels or deformations. This development is a new quality assurance method for glass façades. open access Koch, Christin Müller, Anett Kahlmeyer, Martin Riske, Tino Melnyk, Inga Dähne, Lars Kaden, Dennis Baitinger, Martin Fery, Andreas Böhm, Stefan doi:10.1088/1361-665X/ace393 Mikrokapsel Farbstoff Freisetzung Fluoreszenz Härteeindruck Nanometerbereich Klebstoff Bruchverhalten publishedVersion eissn:1361-665X Number 8 Smart Materials and Structures Volume 32 false 085024
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