Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions

Detalhes bibliográficos
Autor(a) principal: Nóbrega,K. C.
Data de Publicação: 2019
Outros Autores: Silva,S. S. S., Amorim,L. V., Lira,H. L., Costa,W. R. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100028
Resumo: Abstract The aim of this work was to evaluate the influence of the chemical structure of carboxymethylcellulose (CMC) on the rheological performance and fluid loss of clay dispersions. The dispersions were prepared with a fixed content of bentonite clay (15 g/350 mL of water) and different concentrations of CMCs (0.5, 1.0, 2.0 g/350 mL of water). After aging for 24 h in ambient and static conditions, the dispersions were tested in a viscometer. Apparent and plastic viscosities, yield point and gel strength were obtained using the viscometer, according to Petrobras’ standard (EP-1EP-00011-A). The filtrate volume was determined using the API filter press. The results showed that the addition of long chain, low degree of substitution and lower substitution uniformity of CMC contribute to the flocculation phenomenon. In addition, the different chemical characteristics of CMC only influence fluid loss when the ionic strength of the dispersion is set to any other value than zero.
id USP-29_3a87b4f7bb21b55d7cdbf3ebc60a4efb
oai_identifier_str oai:scielo:S0366-69132019000100028
network_acronym_str USP-29
network_name_str Cerâmica (São Paulo. Online)
repository_id_str
spelling Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersionscarboxymethylcelluloseperformancebentonite claychemical characteristicsAbstract The aim of this work was to evaluate the influence of the chemical structure of carboxymethylcellulose (CMC) on the rheological performance and fluid loss of clay dispersions. The dispersions were prepared with a fixed content of bentonite clay (15 g/350 mL of water) and different concentrations of CMCs (0.5, 1.0, 2.0 g/350 mL of water). After aging for 24 h in ambient and static conditions, the dispersions were tested in a viscometer. Apparent and plastic viscosities, yield point and gel strength were obtained using the viscometer, according to Petrobras’ standard (EP-1EP-00011-A). The filtrate volume was determined using the API filter press. The results showed that the addition of long chain, low degree of substitution and lower substitution uniformity of CMC contribute to the flocculation phenomenon. In addition, the different chemical characteristics of CMC only influence fluid loss when the ionic strength of the dispersion is set to any other value than zero.Associação Brasileira de Cerâmica2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100028Cerâmica v.65 n.373 2019reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132019653732471info:eu-repo/semantics/openAccessNóbrega,K. C.Silva,S. S. S.Amorim,L. V.Lira,H. L.Costa,W. R. P.eng2019-01-08T00:00:00Zoai:scielo:S0366-69132019000100028Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2019-01-08T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
title Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
spellingShingle Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
Nóbrega,K. C.
carboxymethylcellulose
performance
bentonite clay
chemical characteristics
title_short Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
title_full Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
title_fullStr Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
title_full_unstemmed Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
title_sort Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
author Nóbrega,K. C.
author_facet Nóbrega,K. C.
Silva,S. S. S.
Amorim,L. V.
Lira,H. L.
Costa,W. R. P.
author_role author
author2 Silva,S. S. S.
Amorim,L. V.
Lira,H. L.
Costa,W. R. P.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Nóbrega,K. C.
Silva,S. S. S.
Amorim,L. V.
Lira,H. L.
Costa,W. R. P.
dc.subject.por.fl_str_mv carboxymethylcellulose
performance
bentonite clay
chemical characteristics
topic carboxymethylcellulose
performance
bentonite clay
chemical characteristics
description Abstract The aim of this work was to evaluate the influence of the chemical structure of carboxymethylcellulose (CMC) on the rheological performance and fluid loss of clay dispersions. The dispersions were prepared with a fixed content of bentonite clay (15 g/350 mL of water) and different concentrations of CMCs (0.5, 1.0, 2.0 g/350 mL of water). After aging for 24 h in ambient and static conditions, the dispersions were tested in a viscometer. Apparent and plastic viscosities, yield point and gel strength were obtained using the viscometer, according to Petrobras’ standard (EP-1EP-00011-A). The filtrate volume was determined using the API filter press. The results showed that the addition of long chain, low degree of substitution and lower substitution uniformity of CMC contribute to the flocculation phenomenon. In addition, the different chemical characteristics of CMC only influence fluid loss when the ionic strength of the dispersion is set to any other value than zero.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S0366-69132019000100028
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100028
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132019653732471
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 Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.65 n.373 2019
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
_version_ 1748936784246472704