Influence of the chemical structure of different carboxymethylcelluloses on the performance of clay dispersions
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
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. |
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Cerâmica (São Paulo. Online) |
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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 |