DSC studies on gamma irradiated poly(vinylidene fluoride) applied to high gamma dose dosimetry

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dc.creatorAdriana de Souza Medeiros Batista
dc.creatorLuiz O. Faria
dc.date.accessioned2023-08-17T20:26:03Z
dc.date.accessioned2025-09-09T00:27:53Z
dc.date.available2023-08-17T20:26:03Z
dc.date.issued2017-02-17
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1016/j.radphyschem.2017.02.040
dc.identifier.issn0969806X
dc.identifier.urihttps://hdl.handle.net/1843/57907
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofRadiation Physics and Chemistry
dc.rightsAcesso Restrito
dc.subjectDosímetros de Radiação
dc.subject.otherHigh dose dosimetry
dc.subject.otherPVDF
dc.subject.otherGamma dosimetry
dc.subject.otherPolymer-base
dc.subject.otherDosimeters
dc.titleDSC studies on gamma irradiated poly(vinylidene fluoride) applied to high gamma dose dosimetry
dc.typeArtigo de periódico
local.citation.epage121
local.citation.issue2017
local.citation.spage116
local.citation.volume140
local.description.resumoPoly(vinylidene fluoride) homopolymer (PVDF) was investigated for use on high gamma dose dosimetry.Samples were irradiated with gamma doses ranging from 100 kGy to 3000 kGy. Differential scanning calorimetry (DSC) was used to construct an unambiguous relationship between the melting transition latent heat (LM) and the absorbed dose (D). DSC thermograms were taken immediately, 1, 2 and 8 months after the irradiation process revealing that the LM x D relationship presented no change for doses ranging from 100 to 2750 kGy. FTIR and UV–Vis spectroscopy data revealed the radio-induction of C˭O and C˭C bonds. These radio-induced bonds were responsible by the chain stiffening and chain oxidation, respectively. SEM microscopy demonstrates that the spherulitic large crystalline structures present in pristine PVDF are destroyed with doses as low as 100 kGy. The DRX analysis revealed that the main effect of high gamma doses in the crystalline structure of PVDF is to provoke a change from the pristine PVDF α-phase to the γ-phase. Both the ability to detect gamma doses in a large dose range and the low fading features make PVDF homopolymers good candidates to be investigated as high gamma dose dosimeters.
local.identifier.orcidhttps://orcid.org/0000-0001-6834-7551
local.publisher.countryBrasil
local.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEM
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/abs/pii/S0969806X17302141?via%3Dihub

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