Rheological studies of aqueous stabilised nano-zirconia particle suspensions

Detalhes bibliográficos
Autor(a) principal: Khan,Asad Ullah
Data de Publicação: 2012
Outros Autores: Haq,Anwar Ul, Mahmood,Nasir, Ali,Zulfiqar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100004
Resumo: In the present investigation aqueous suspensions of nano- and colloidal range particles are stabilised by changing the ambient pH. Rheology is used to establish the stability of the suspensions and it is found that the rheology of the suspensions is strongly dependent on the pH values. The viscosity is highest close to the iso-electric point of the powders. At the iso-electric point the net surface charge on the powder particles is zero and is the cause of the high viscosity. Away from the iso-electric point, the particles are charged, giving rise to a double layer phenomenon and causing the reduction in viscosity. It is also found that increasing the solid contents of the suspensions reduces the pH region of low viscosity.
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spelling Rheological studies of aqueous stabilised nano-zirconia particle suspensionszirconiarheologyelectrophoretic mobilitysuspensionIn the present investigation aqueous suspensions of nano- and colloidal range particles are stabilised by changing the ambient pH. Rheology is used to establish the stability of the suspensions and it is found that the rheology of the suspensions is strongly dependent on the pH values. The viscosity is highest close to the iso-electric point of the powders. At the iso-electric point the net surface charge on the powder particles is zero and is the cause of the high viscosity. Away from the iso-electric point, the particles are charged, giving rise to a double layer phenomenon and causing the reduction in viscosity. It is also found that increasing the solid contents of the suspensions reduces the pH region of low viscosity.ABM, ABC, ABPol2012-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100004Materials Research v.15 n.1 2012reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392011005000097info:eu-repo/semantics/openAccessKhan,Asad UllahHaq,Anwar UlMahmood,NasirAli,Zulfiqareng2012-02-23T00:00:00Zoai:scielo:S1516-14392012000100004Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2012-02-23T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Rheological studies of aqueous stabilised nano-zirconia particle suspensions
title Rheological studies of aqueous stabilised nano-zirconia particle suspensions
spellingShingle Rheological studies of aqueous stabilised nano-zirconia particle suspensions
Khan,Asad Ullah
zirconia
rheology
electrophoretic mobility
suspension
title_short Rheological studies of aqueous stabilised nano-zirconia particle suspensions
title_full Rheological studies of aqueous stabilised nano-zirconia particle suspensions
title_fullStr Rheological studies of aqueous stabilised nano-zirconia particle suspensions
title_full_unstemmed Rheological studies of aqueous stabilised nano-zirconia particle suspensions
title_sort Rheological studies of aqueous stabilised nano-zirconia particle suspensions
author Khan,Asad Ullah
author_facet Khan,Asad Ullah
Haq,Anwar Ul
Mahmood,Nasir
Ali,Zulfiqar
author_role author
author2 Haq,Anwar Ul
Mahmood,Nasir
Ali,Zulfiqar
author2_role author
author
author
dc.contributor.author.fl_str_mv Khan,Asad Ullah
Haq,Anwar Ul
Mahmood,Nasir
Ali,Zulfiqar
dc.subject.por.fl_str_mv zirconia
rheology
electrophoretic mobility
suspension
topic zirconia
rheology
electrophoretic mobility
suspension
description In the present investigation aqueous suspensions of nano- and colloidal range particles are stabilised by changing the ambient pH. Rheology is used to establish the stability of the suspensions and it is found that the rheology of the suspensions is strongly dependent on the pH values. The viscosity is highest close to the iso-electric point of the powders. At the iso-electric point the net surface charge on the powder particles is zero and is the cause of the high viscosity. Away from the iso-electric point, the particles are charged, giving rise to a double layer phenomenon and causing the reduction in viscosity. It is also found that increasing the solid contents of the suspensions reduces the pH region of low viscosity.
publishDate 2012
dc.date.none.fl_str_mv 2012-02-01
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=S1516-14392012000100004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392011005000097
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.15 n.1 2012
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212660508884992

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