Thermal diffusivity analysis of doped poly(methyl-methacrylate) with electron donor and acceptor molecules

Página do item simplificado
dc.contributor.authorCornelio, M. L.
dc.contributor.authorToma, M. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:30Z
dc.date.available2014-05-20T15:24:30Z
dc.date.issued1999-01-01
dc.description.abstractA computer-assisted method for analysing photoacoustic spectra has been developed in the Windows(TM) environment with the use of an easy graphical interface, the computer simulation was carried out with the aim of using the entire expression of the Rosencwaig-Gersho theory, thus permitting multiple applications. The simulation was applied to a system that mimics the electron transfer process in which the concentration of octaethylporphin donor molecules was constant whereas the concentration of duroquinone and 2,3-dichloro-5,6-dicyano-1, l-benzoquinone acceptor molecules varied. The increment of the acceptor concentration influenced the photoacoustic amplitude and phase signals. In the phase signal a significant shift to smaller values was observed, denoting a faster heat generation. The analysis of the photoacoustic signal enabled the determination of the thermal diffusivity, the result obtained through the simulation was about (7 +/- 1) x 10(-7) m(2) s(-1) indicating that changes in the photoacoustic phase signals were due to the electron transfer process rather than changes in the thermal properties of the sample.en
dc.description.affiliationUniv Estadual Paulista, Dept Phys, Inst Biociencias Letras & Ciências Exatas, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Computat Sci Course, Inst Biociencias Letras & Ciências Exatas, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Phys, Inst Biociencias Letras & Ciências Exatas, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Computat Sci Course, Inst Biociencias Letras & Ciências Exatas, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.format.extent63-68
dc.identifierhttp://dx.doi.org/10.1068/htec128
dc.identifier.citationHigh Temperatures-high Pressures. London: Pion Ltd, v. 31, n. 1, p. 63-68, 1999.
dc.identifier.doi10.1068/htec128
dc.identifier.issn0018-1544
dc.identifier.lattes3874425691257843
dc.identifier.urihttp://hdl.handle.net/11449/35107
dc.identifier.wosWOS:000079229300009
dc.language.isoeng
dc.publisherPion Ltd
dc.relation.ispartofHigh Temperatures-high Pressures
dc.relation.ispartofjcr0.544
dc.relation.ispartofsjr0,234
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleThermal diffusivity analysis of doped poly(methyl-methacrylate) with electron donor and acceptor moleculesen
dc.typeArtigo
dcterms.licensehttp://www.oldcitypublishing.com/Reprint%20order%20form.pdf
dcterms.rightsHolderPion Ltd
unesp.author.lattes3874425691257843
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Física - IBILCE
Artigos - Ciência da Computação e Estatística - IBILCE