A fluorescence method to estimate the distribution of stresses in polymer materials

Olmos Díaz, Dania; Aznar Jiménez, Antonio; González Benito, Francisco Javier; Baselga Llidó, Juan

Publication:
A fluorescence method to estimate the distribution of stresses in polymer materials

dc.affiliation.dpto	UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Polímeros y Composites	es
dc.contributor.author	Olmos Díaz, Dania
dc.contributor.author	Aznar Jiménez, Antonio
dc.contributor.author	González Benito, Francisco Javier
dc.contributor.author	Baselga Llidó, Juan
dc.date.accessioned	2017-11-22T11:00:49Z
dc.date.available	2017-11-22T11:00:49Z
dc.date.issued	2003-12-20
dc.description.abstract	It is very important to control the distribution of stresses in order to prevent catastrophic failures during working life of polymer materials. At the present moment, there are several methods to test the distribution of stresses in materials. In the last years, many numerical methods have been proposed, but they have limitations. On the other hand, experimental methods are difficult to perform in all cases, for example when “in situ” determinations are required. In the present work, the use of environmentally sensitive fluorescence molecules (fluorophores) to estimate the tensile state in polymers is discussed. Pyrene, p-quaterphenyl, 1,6-diphenyl-1,3,5-hexatriene (DPhHT), 1,4-bis(5-phenyloxazol-2-yl)benzene and dansyl derivatives, whose fluorescences are sensitive to different types of changes (polarity, microviscosity, etc.), were immersed in one epoxy mixture. After that, the epoxy mixture was cured in a mould to prepare size controlled samples. The specimens were uniaxially loaded. In most of the cases the fluorescence suffers small variations with the epoxy deformation. To evaluate these changes, two photophysical parameters were used: (i) the integrated intensity and (ii) the first moment in the wavenumber of the emission band, 〈ν〉. Related to the fluorescence intensity, the dansyl moiety seems to be the most sensitive; however, for 〈ν〉 the DPhHT showed the highest changes	en
dc.format.extent	6
dc.format.mimetype	application/pdf
dc.identifier.bibliographicCitation	Olmos, D., Aznar, A. J., González-Benito, J. & Baselga, J. (2003). A fluorescence method to estimate the distribution of stresses in polymer materials. Journal of Materials Processing Technology, 143-144, pp. 495-500.	en
dc.identifier.doi	https://doi.org/10.1016/S0924-0136(03)00304-2
dc.identifier.issn	0924-0136
dc.identifier.publicationfirstpage	495
dc.identifier.publicationlastpage	500
dc.identifier.publicationtitle	Journal of Materials Processing Technology	en
dc.identifier.publicationvolume	143-144
dc.identifier.uri	https://hdl.handle.net/10016/25928
dc.identifier.uxxi	AR/0000004116
dc.language.iso	eng
dc.publisher	Elsevier	en
dc.rights	© Elsevier, 2003
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRights	open access
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.eciencia	Materiales	es
dc.subject.eciencia	Química	es
dc.subject.other	Fluorescence	en
dc.subject.other	Tensional state	en
dc.subject.other	Epoxy resins	en
dc.title	A fluorescence method to estimate the distribution of stresses in polymer materials	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication