Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin

Detalhes bibliográficos
Autor(a) principal: VIRGINIO, SUELI
Data de Publicação: 2020
Outros Autores: GERALDO, AUREA B.C., MACHADO, LUCI D.B., COSENTINO, IVANA C., MATOS, JIVALDO do R., INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
Tipo de documento: Artigo de conferência
Título da fonte: Repositório Institucional do IPEN
Texto Completo: http://repositorio.ipen.br/handle/123456789/30641
Resumo: To obtain the mesoporous nanostructured SBA-15 silica particles, a chemical reaction was perfomed using a template ??? a triblock copolymer (Pluronic 123??) - and a silica source - the tetraethyl orthosilicate - in acid medium. These silica particles were obtained by classical chemical reaction method and irradiation process (gamma rays from 60Co-Gammacell) at absorbed dose values of 0.5 kGy, 10 kGy and 25 kGy. Then, these silica particles were dispersed in epoxy resin Araldite?? GY260 (diglycidyl ether of bisphenol A - DGEBA) and a cure agent. The particles dispersion was evaluated by two methodologies: a) Melt blending mode, where silica particles are dispersed in hot resin; b) Solvent-blended solution mode, where silica particles are dispersed in epoxy resin/acetone mixture in order to prevent the agglomeration of the inorganic phase. The silica particles had the specific surface area calculated from BET (Brunauer-Emmett-Teller) equation, while the BJH (Barrett- Joyner-Halenda) equation was used to determine pore volume and average diameter. Silica particles presented high surface area and pores arranged in hexagonal nanoscale diameter. The TEM images for irradiated silica particles have confirmed the hexagonal pore ordering in SBA-15 even using low gamma absorbed doses. The infrared absorption spectra (FTIR) confirmed that the added organic solvent has been effectively removed. Images of optical microscope revealed dispersion of the components by solvent-blended solution mode allows a better components interaction.
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spelling 2020-01-13T11:58:26Z2020-01-13T11:58:26ZOctober 21-25, 2019http://repositorio.ipen.br/handle/123456789/306410000-0003-1339-366XTo obtain the mesoporous nanostructured SBA-15 silica particles, a chemical reaction was perfomed using a template ??? a triblock copolymer (Pluronic 123??) - and a silica source - the tetraethyl orthosilicate - in acid medium. These silica particles were obtained by classical chemical reaction method and irradiation process (gamma rays from 60Co-Gammacell) at absorbed dose values of 0.5 kGy, 10 kGy and 25 kGy. Then, these silica particles were dispersed in epoxy resin Araldite?? GY260 (diglycidyl ether of bisphenol A - DGEBA) and a cure agent. The particles dispersion was evaluated by two methodologies: a) Melt blending mode, where silica particles are dispersed in hot resin; b) Solvent-blended solution mode, where silica particles are dispersed in epoxy resin/acetone mixture in order to prevent the agglomeration of the inorganic phase. The silica particles had the specific surface area calculated from BET (Brunauer-Emmett-Teller) equation, while the BJH (Barrett- Joyner-Halenda) equation was used to determine pore volume and average diameter. Silica particles presented high surface area and pores arranged in hexagonal nanoscale diameter. The TEM images for irradiated silica particles have confirmed the hexagonal pore ordering in SBA-15 even using low gamma absorbed doses. The infrared absorption spectra (FTIR) confirmed that the added organic solvent has been effectively removed. Images of optical microscope revealed dispersion of the components by solvent-blended solution mode allows a better components interaction.Submitted by Celia Satomi Uehara (celia.u-topservice@ipen.br) on 2020-01-13T11:58:26Z No. of bitstreams: 1 26290.pdf: 840364 bytes, checksum: 9b902cac9c5e979e1af6c12a25ee0ca2 (MD5)Made available in DSpace on 2020-01-13T11:58:26Z (GMT). No. of bitstreams: 1 26290.pdf: 840364 bytes, checksum: 9b902cac9c5e979e1af6c12a25ee0ca2 (MD5)2545-2551Associa????o Brasileira de Energia Nuclearabsorbed radiation dosescobalt 60epoxidesfourier transformationgamma radiationinfrared spectrananostructuresresinssilicasurfactantstransmission electron microscopyEvaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resininfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectINACIRio de JaneiroSantos, SP145651466963887600600600600VIRGINIO, SUELIGERALDO, AUREA B.C.MACHADO, LUCI D.B.COSENTINO, IVANA C.MATOS, JIVALDO do R.INTERNATIONAL NUCLEAR ATLANTIC CONFERENCEinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN262902019COSENTINO, IVANA C.MACHADO, LUCI D.B.GERALDO, AUREA B.C.VIRGINIO, SUELI20-01Proceedings887963146614730COSENTINO, IVANA C.:887:720:NMACHADO, LUCI D.B.:963:220:NGERALDO, AUREA B.C.:1466:220:NVIRGINIO, SUELI:14730:-1:SORIGINAL26290.pdf26290.pdfapplication/pdf840364http://repositorio.ipen.br/bitstream/123456789/30641/1/26290.pdf9b902cac9c5e979e1af6c12a25ee0ca2MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/30641/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/306412022-06-02 11:08:52.832oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102022-06-02T11:08:52Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false
dc.title.pt_BR.fl_str_mv Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
title Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
spellingShingle Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
VIRGINIO, SUELI
absorbed radiation doses
cobalt 60
epoxides
fourier transformation
gamma radiation
infrared spectra
nanostructures
resins
silica
surfactants
transmission electron microscopy
title_short Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
title_full Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
title_fullStr Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
title_full_unstemmed Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
title_sort Evaluation of ordered mesoporous silica SBA-15 dispersed in epoxy resin
author VIRGINIO, SUELI
author_facet VIRGINIO, SUELI
GERALDO, AUREA B.C.
MACHADO, LUCI D.B.
COSENTINO, IVANA C.
MATOS, JIVALDO do R.
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
author_role author
author2 GERALDO, AUREA B.C.
MACHADO, LUCI D.B.
COSENTINO, IVANA C.
MATOS, JIVALDO do R.
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv VIRGINIO, SUELI
GERALDO, AUREA B.C.
MACHADO, LUCI D.B.
COSENTINO, IVANA C.
MATOS, JIVALDO do R.
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
dc.subject.por.fl_str_mv absorbed radiation doses
cobalt 60
epoxides
fourier transformation
gamma radiation
infrared spectra
nanostructures
resins
silica
surfactants
transmission electron microscopy
topic absorbed radiation doses
cobalt 60
epoxides
fourier transformation
gamma radiation
infrared spectra
nanostructures
resins
silica
surfactants
transmission electron microscopy
description To obtain the mesoporous nanostructured SBA-15 silica particles, a chemical reaction was perfomed using a template ??? a triblock copolymer (Pluronic 123??) - and a silica source - the tetraethyl orthosilicate - in acid medium. These silica particles were obtained by classical chemical reaction method and irradiation process (gamma rays from 60Co-Gammacell) at absorbed dose values of 0.5 kGy, 10 kGy and 25 kGy. Then, these silica particles were dispersed in epoxy resin Araldite?? GY260 (diglycidyl ether of bisphenol A - DGEBA) and a cure agent. The particles dispersion was evaluated by two methodologies: a) Melt blending mode, where silica particles are dispersed in hot resin; b) Solvent-blended solution mode, where silica particles are dispersed in epoxy resin/acetone mixture in order to prevent the agglomeration of the inorganic phase. The silica particles had the specific surface area calculated from BET (Brunauer-Emmett-Teller) equation, while the BJH (Barrett- Joyner-Halenda) equation was used to determine pore volume and average diameter. Silica particles presented high surface area and pores arranged in hexagonal nanoscale diameter. The TEM images for irradiated silica particles have confirmed the hexagonal pore ordering in SBA-15 even using low gamma absorbed doses. The infrared absorption spectra (FTIR) confirmed that the added organic solvent has been effectively removed. Images of optical microscope revealed dispersion of the components by solvent-blended solution mode allows a better components interaction.
publishDate 2020
dc.date.evento.pt_BR.fl_str_mv October 21-25, 2019
dc.date.accessioned.fl_str_mv 2020-01-13T11:58:26Z
dc.date.available.fl_str_mv 2020-01-13T11:58:26Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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identifier_str_mv 0000-0003-1339-366X
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dc.format.none.fl_str_mv 2545-2551
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dc.publisher.none.fl_str_mv Associa????o Brasileira de Energia Nuclear
publisher.none.fl_str_mv Associa????o Brasileira de Energia Nuclear
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