Visualizing separation at composite interfaces via spirolactam mechanophores

Author(s)Gohl, Jared A.
Author(s)Roberts, Tyler J.
Author(s)Freund, Anna C.
Author(s)Haque, Nazmul
Author(s)Rueschhoff, Lisa M.
Author(s)Baldwin, Luke A.
Author(s)Davis, Chelsea S.
Date Accessioned2024-12-12T19:46:52Z
Date Available2024-12-12T19:46:52Z
Publication Date2024-10-17
DescriptionThis article was originally published in RSC Mechanochemistry. The version of record is available at: https://doi.org/10.1039/D4MR00086B. © 2024 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence (http://creativecommons.org/licenses/by-nc/3.0/).
AbstractThe failure of interfaces between polymers and inorganic substrates often leads to deteriorated performance, as is the case for polymer matrix composites. Interfacial mechanophores (iMPs) have the potential to fluorescently measure interfacial failures. Spirolactam-based mechanophores are of interest due to their readily available synthetic precursors and compatibility with epoxy matrices. In this work, spirolactam is covalently bound at the interface of silica surfaces and epoxy, chosen due to the industrial relevance of glass fiber composites. The iMPs are mechanically activated through uniaxial tension applied to the composite while the resulting fluorescent response is observed in situ with a confocal microscope. Due to their real time sensing capabilities, iMPs are a promising technique to measure interfacial failures in composite materials more easily than with traditional optical microscopy techniques.
SponsorThe authors would like to thank the NSF-CMMI CAREER (Grant #2045908) and the Semiconductor Research Corporation (SRC Project #2878.013) for funding JG as well as the Air Force Research Laboratory Summer Faculty Fellowship Program for providing an internship opportunity for JG and CD during the summer of 2020. We acknowledge the NSF-NRT-MIDAS (Award #2125703) for funding for AF. The authors would also like to thank Patrick Thompson and Monali Basutkar for serving as industrial liaisons and offering helpful guidance and feedback for the duration of the SRC funding. Distribution A cleared for public release; distribution unlimited (2024-ARFL-5903).
CitationGohl, Jared A., Tyler J. Roberts, Anna C. Freund, Nazmul Haque, Lisa M. Rueschhoff, Luke A. Baldwin, and Chelsea S. Davis. “Visualizing Separation at Composite Interfaces via Spirolactam Mechanophores.” RSC Mechanochemistry, 2025, 10.1039.D4MR00086B. https://doi.org/10.1039/D4MR00086B.
ISSN2976-8683
URLhttps://udspace.udel.edu/handle/19716/35655
Languageen_US
PublisherRSC Mechanochemistry
dc.rightsAttribution-NonCommercial 3.0 Unported Licenceen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
TitleVisualizing separation at composite interfaces via spirolactam mechanophores
TypeArticle
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