Reference : On the interplay between matter transport and structure formation at epoxy-hardener i...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/10993/13485

Title :	On the interplay between matter transport and structure formation at epoxy-hardener interfaces visualized by scanning Brillouin microscopy
Language :	English
Author, co-author :	Philipp, Martine [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Müller, Ulrich [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Sanctuary, Roland [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Kieffer, John [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, United States]
	Possart, Wulff [Werkstoffwissenschaften, Universität des Saarlandes, Saarbrücken, Germany]
	Krüger, Jan-Kristian [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Publication date :	2011
Journal title :	Soft Matter
Publisher :	Royal Society of Chemistry
Volume :	7
Issue/season :	1
Pages :	118-124
Peer reviewed :	Yes (verified by ORBilu)
ISSN :	1744-683X
e-ISSN :	1744-6848
City :	Cambridge
Country :	United Kingdom
Keywords :	[en] diffusion ; convection ; epoxy network swelling ; self-healing mechanisms ; Scanning Brillouin microscopy
Abstract :	[en] Structural developments are investigated in network-forming reactive polymers by time- and 10 space-resolved scanning Brillouin microscopy. Hypersonic properties are probed to reveal the subtle interplay between molecular transport, dissolution, polymerization and network defects in the vicinity of the interface between reactants, which are either pure epoxy resin or various epoxy resin-hardener mixtures, topped by a layer of pure hardener. The trans-interfacial polymerization produces heterogeneous epoxy structures of either gelatinous or glassy nature. Interestingly, the 15 hardener can easily penetrate and swell these networks and epoxy network fragments can be transported over several millimeters by convective flow. The observed features may be used to form interpenetrating networks during self-healing procedures.
Permalink :	http://hdl.handle.net/10993/13485
DOI :	10.1039/C0SM00505C

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