Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000501706 |
Resumo: | Abstract Silica is a versatile material employed in different applications fields including aerospace, especially for rocket engines thermal protections. It is known that particles diameter causes variations in the material properties, and the best-known methods for diameter determination in general consist of several steps in sample preparation such as drying, sieving and the determination of the refractive index according different methods. On the other hand, Fourier transform infrared spectroscopy techniques (FT-IR), in reflectance mode, related to the particle size, are less used for this type of determination. Moreover, methodologies in the near infrared region (NIR) are even less explored. Therefore, the aim of this paper is to present a FTIR methodology for diffuse reflectance (DRIFT) in the middle infrared region (MIR) and reflectance analysis in near infrared region (NIRA) for the determination of the particle diameter on silica samples. Both methodologies showed good results. As proven by a test sample analysis, NIRA methodology indicated better precision. Furthermore, considering small and intermediated particle sizes, a tendency towards smaller errors for the absorbance measurements of the samples was found, consistently with the available literature results. |
id |
ABC-1_2e6f5b63f6301030bf34e5535f815353 |
---|---|
oai_identifier_str |
oai:scielo:S0001-37652022000501706 |
network_acronym_str |
ABC-1 |
network_name_str |
Anais da Academia Brasileira de Ciências (Online) |
repository_id_str |
|
spelling |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental dataParticle diameterDRIFTMIRNIRAsilicaAbstract Silica is a versatile material employed in different applications fields including aerospace, especially for rocket engines thermal protections. It is known that particles diameter causes variations in the material properties, and the best-known methods for diameter determination in general consist of several steps in sample preparation such as drying, sieving and the determination of the refractive index according different methods. On the other hand, Fourier transform infrared spectroscopy techniques (FT-IR), in reflectance mode, related to the particle size, are less used for this type of determination. Moreover, methodologies in the near infrared region (NIR) are even less explored. Therefore, the aim of this paper is to present a FTIR methodology for diffuse reflectance (DRIFT) in the middle infrared region (MIR) and reflectance analysis in near infrared region (NIRA) for the determination of the particle diameter on silica samples. Both methodologies showed good results. As proven by a test sample analysis, NIRA methodology indicated better precision. Furthermore, considering small and intermediated particle sizes, a tendency towards smaller errors for the absorbance measurements of the samples was found, consistently with the available literature results.Academia Brasileira de Ciências2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000501706Anais da Academia Brasileira de Ciências v.94 n.3 2022reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202220210545info:eu-repo/semantics/openAccessMAGALHÃES,RACHEL F.BARROS,ALEXANDRA H. DETAKEMATSU,MARCIA M.PASSERO,ALANDINIZ,MILTON F.SCIAMARELI,JAIRODUTRA,RITA C.L.eng2022-10-13T00:00:00Zoai:scielo:S0001-37652022000501706Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2022-10-13T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
title |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
spellingShingle |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data MAGALHÃES,RACHEL F. Particle diameter DRIFT MIR NIRA silica |
title_short |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
title_full |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
title_fullStr |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
title_full_unstemmed |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
title_sort |
Infrared reflectance techniques applied to silica particles diameter determination - theoretical and experimental data |
author |
MAGALHÃES,RACHEL F. |
author_facet |
MAGALHÃES,RACHEL F. BARROS,ALEXANDRA H. DE TAKEMATSU,MARCIA M. PASSERO,ALAN DINIZ,MILTON F. SCIAMARELI,JAIRO DUTRA,RITA C.L. |
author_role |
author |
author2 |
BARROS,ALEXANDRA H. DE TAKEMATSU,MARCIA M. PASSERO,ALAN DINIZ,MILTON F. SCIAMARELI,JAIRO DUTRA,RITA C.L. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
MAGALHÃES,RACHEL F. BARROS,ALEXANDRA H. DE TAKEMATSU,MARCIA M. PASSERO,ALAN DINIZ,MILTON F. SCIAMARELI,JAIRO DUTRA,RITA C.L. |
dc.subject.por.fl_str_mv |
Particle diameter DRIFT MIR NIRA silica |
topic |
Particle diameter DRIFT MIR NIRA silica |
description |
Abstract Silica is a versatile material employed in different applications fields including aerospace, especially for rocket engines thermal protections. It is known that particles diameter causes variations in the material properties, and the best-known methods for diameter determination in general consist of several steps in sample preparation such as drying, sieving and the determination of the refractive index according different methods. On the other hand, Fourier transform infrared spectroscopy techniques (FT-IR), in reflectance mode, related to the particle size, are less used for this type of determination. Moreover, methodologies in the near infrared region (NIR) are even less explored. Therefore, the aim of this paper is to present a FTIR methodology for diffuse reflectance (DRIFT) in the middle infrared region (MIR) and reflectance analysis in near infrared region (NIRA) for the determination of the particle diameter on silica samples. Both methodologies showed good results. As proven by a test sample analysis, NIRA methodology indicated better precision. Furthermore, considering small and intermediated particle sizes, a tendency towards smaller errors for the absorbance measurements of the samples was found, consistently with the available literature results. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000501706 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000501706 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765202220210545 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.94 n.3 2022 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302872461246464 |