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Mechanically induced dye-release from polyurea microcapsules in a rubbery adhesive

dc.date.accessioned2024-02-01T16:48:24Z
dc.date.available2024-02-01T16:48:24Z
dc.date.issued2023-07-13
dc.identifierdoi:10.17170/kobra-202401039317
dc.identifier.urihttp://hdl.handle.net/123456789/15425
dc.description.sponsorshipGefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlagger
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmicrocapsuleseng
dc.subjectdye-releaseeng
dc.subjectfluorescenceeng
dc.subjectnanoindentationeng
dc.subject.ddc600
dc.subject.ddc660
dc.titleMechanically induced dye-release from polyurea microcapsules in a rubbery adhesiveeng
dc.typeAufsatz
dcterms.abstractEspecially 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.eng
dcterms.accessRightsopen access
dcterms.creatorKoch, Christin
dcterms.creatorMüller, Anett
dcterms.creatorKahlmeyer, Martin
dcterms.creatorRiske, Tino
dcterms.creatorMelnyk, Inga
dcterms.creatorDähne, Lars
dcterms.creatorKaden, Dennis
dcterms.creatorBaitinger, Martin
dcterms.creatorFery, Andreas
dcterms.creatorBöhm, Stefan
dc.relation.doidoi:10.1088/1361-665X/ace393
dc.subject.swdMikrokapselger
dc.subject.swdFarbstoffger
dc.subject.swdFreisetzungger
dc.subject.swdFluoreszenzger
dc.subject.swdHärteeindruckger
dc.subject.swdNanometerbereichger
dc.subject.swdKlebstoffger
dc.subject.swdBruchverhaltenger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1361-665X
dcterms.source.issueNumber 8
dcterms.source.journalSmart Materials and Structureseng
dcterms.source.volumeVolume 32
kup.iskupfalse
dcterms.source.articlenumber085024


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