Fluorescence monitoring of curing process and water accessibility at glass fiber/epoxy interphase on composite materials

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dc.contributor.author González Benito, Francisco Javier
dc.contributor.author Mikes, Frantisek
dc.contributor.author Bravo De Pedro, Julio
dc.contributor.author Aznar Jiménez, Antonio
dc.contributor.author Baselga Llidó, Juan
dc.date.accessioned 2017-11-17T10:14:59Z
dc.date.available 2017-11-17T10:14:59Z
dc.date.issued 2001-05
dc.identifier.bibliographicCitation González-Benito, J., Mikeš, F., Bravo, J., Aznar, A. J., & Baselga, J. (2001). Fluorescence monitoring of curing process and water accessibility at glass fiber/epoxy interphase on composite materials. Journal of Macromolecular Science, Part B: Physics, 40 (3-4), pp. 429-441.
dc.identifier.issn 0022-2348
dc.identifier.uri http://hdl.handle.net/10016/25873
dc.description.abstract Modified glass fibers with three different amino silanes—(1) 3-aminopropyltriethoxysilane (APTES), (2) 3-aminopropylmethyldiethoxysilane (APDES), and (3) 3-aminopropyldimethylethoxysilane (APMES)—were labeled with 5-dimethylaminonaphthalene-1-sulfonylchloride (DNS), and its fluorescence was followed as a function of curing time for two epoxide formulations (TRIEPOX-LM, Gairesa, Spain, and diglycidyl ester bisphenol A–ethylenediamine), as well as a function of water uptake. It was demonstrated that the fluorescence response from fluorophores directly attached to the coupling region in glass fibers/epoxy composites is a very sensible method for nondestructive and “in situ” monitoring of any changes that appear at the interphase (rigidity and solvent accessibility). In addition, fluorescence from a dansyl label shows more rigidity when APMES is used as the coupling agent. This suggests that the greater the cross-linking degree at the coupling region, the smaller the epoxy chain interdiffusion. Finally, the water uptake process in glass fiber/epoxy composites can be divided into two steps; the first step corresponds to the diffusion of water to the coupling region, and the second step corresponds to the hydrolysis of siloxane bonds in the interphase. Both steps are dependent on the surface treatment of the glass fibers.
dc.description.sponsorship We would like to thank the European Commission for funding through the BRITE-EuRam Project (BE 97-4472) and to CAM (07N/0002/98).
dc.format.extent 12
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Taylor & Francis Group
dc.rights © Marcel Dekker, 2001 © Taylor & Francis
dc.subject.other Epoxy resin
dc.subject.other Fluorescent labels
dc.subject.other Glass fibers
dc.subject.other Interphase
dc.subject.other Silane treatment
dc.title Fluorescence monitoring of curing process and water accessibility at glass fiber/epoxy interphase on composite materials
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi https://doi.org/10.1081/MB-100106168
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/BE97/4472
dc.relation.projectID Comunidad de Madrid. CAM (07N/0002/1998)
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 429
dc.identifier.publicationissue 3-4
dc.identifier.publicationlastpage 440
dc.identifier.publicationtitle Journal of Macromolecular Science, Part B: Physics
dc.identifier.publicationvolume 40
dc.identifier.uxxi AR/0000004123
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