A Nano-modified superhydrophobic membrane
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
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=S1516-14392013000300009 |
Resumo: | This paper focuses on the synthesis of super-hydrophobic membranes. The polymer used in this research is polystyrene (PS), which has low surface energy but not low enough to be characterized as a superhydrophobic material. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing technique. N, N' dimethylformamide (DMF) was employed as the PS solvent. Two groups of PS/DMF solutions were investigated i.e. 20/80 and 35/65. To increase even more the hydrophobicity, nanoparticles of silica, graphene, cadmium, and zinc were dispersed into the PS/DMF solutions. In contrast to results previous published in literature, the PS/DMF weight ratio of 20/80 led to water contact angles (WCA) of 148º, which is higher than the contact angle for the 35/65 ratio, i.e. 143º. This fact seems to be due to the presence of non-evaporated solvent into the PS surface as the 35/65 solution was more viscous. The WCA for membranes with 0.5 wt. (%) of graphene reached 152º, 149º-153º for membranes with nanosilica addition, 151º with 5.0 wt. (%) CdS, and 153º, 163º and 168º with the addition of 5 wt. (%), 10 wt. (%) and 15 wt. (%) of ZnS, respectively. |
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A Nano-modified superhydrophobic membranenanomembranessuperhydrophobicitygraphene nanosheetsnanoparticlesThis paper focuses on the synthesis of super-hydrophobic membranes. The polymer used in this research is polystyrene (PS), which has low surface energy but not low enough to be characterized as a superhydrophobic material. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing technique. N, N' dimethylformamide (DMF) was employed as the PS solvent. Two groups of PS/DMF solutions were investigated i.e. 20/80 and 35/65. To increase even more the hydrophobicity, nanoparticles of silica, graphene, cadmium, and zinc were dispersed into the PS/DMF solutions. In contrast to results previous published in literature, the PS/DMF weight ratio of 20/80 led to water contact angles (WCA) of 148º, which is higher than the contact angle for the 35/65 ratio, i.e. 143º. This fact seems to be due to the presence of non-evaporated solvent into the PS surface as the 35/65 solution was more viscous. The WCA for membranes with 0.5 wt. (%) of graphene reached 152º, 149º-153º for membranes with nanosilica addition, 151º with 5.0 wt. (%) CdS, and 153º, 163º and 168º with the addition of 5 wt. (%), 10 wt. (%) and 15 wt. (%) of ZnS, respectively.ABM, ABC, ABPol2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000300009Materials Research v.16 n.3 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000028info:eu-repo/semantics/openAccessÁvila,Antonio FerreiraOliveira,Aline Marques deLacerda,Glenda Ribeiro de Barros SilveiraMunhoz,Viviane CristinaSantos,Mayara Cele GonçalvesSantos,Patricia FigueiredoTriplett,Matteng2013-06-04T00:00:00Zoai:scielo:S1516-14392013000300009Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-06-04T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
A Nano-modified superhydrophobic membrane |
title |
A Nano-modified superhydrophobic membrane |
spellingShingle |
A Nano-modified superhydrophobic membrane Ávila,Antonio Ferreira nanomembranes superhydrophobicity graphene nanosheets nanoparticles |
title_short |
A Nano-modified superhydrophobic membrane |
title_full |
A Nano-modified superhydrophobic membrane |
title_fullStr |
A Nano-modified superhydrophobic membrane |
title_full_unstemmed |
A Nano-modified superhydrophobic membrane |
title_sort |
A Nano-modified superhydrophobic membrane |
author |
Ávila,Antonio Ferreira |
author_facet |
Ávila,Antonio Ferreira Oliveira,Aline Marques de Lacerda,Glenda Ribeiro de Barros Silveira Munhoz,Viviane Cristina Santos,Mayara Cele Gonçalves Santos,Patricia Figueiredo Triplett,Matt |
author_role |
author |
author2 |
Oliveira,Aline Marques de Lacerda,Glenda Ribeiro de Barros Silveira Munhoz,Viviane Cristina Santos,Mayara Cele Gonçalves Santos,Patricia Figueiredo Triplett,Matt |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Ávila,Antonio Ferreira Oliveira,Aline Marques de Lacerda,Glenda Ribeiro de Barros Silveira Munhoz,Viviane Cristina Santos,Mayara Cele Gonçalves Santos,Patricia Figueiredo Triplett,Matt |
dc.subject.por.fl_str_mv |
nanomembranes superhydrophobicity graphene nanosheets nanoparticles |
topic |
nanomembranes superhydrophobicity graphene nanosheets nanoparticles |
description |
This paper focuses on the synthesis of super-hydrophobic membranes. The polymer used in this research is polystyrene (PS), which has low surface energy but not low enough to be characterized as a superhydrophobic material. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing technique. N, N' dimethylformamide (DMF) was employed as the PS solvent. Two groups of PS/DMF solutions were investigated i.e. 20/80 and 35/65. To increase even more the hydrophobicity, nanoparticles of silica, graphene, cadmium, and zinc were dispersed into the PS/DMF solutions. In contrast to results previous published in literature, the PS/DMF weight ratio of 20/80 led to water contact angles (WCA) of 148º, which is higher than the contact angle for the 35/65 ratio, i.e. 143º. This fact seems to be due to the presence of non-evaporated solvent into the PS surface as the 35/65 solution was more viscous. The WCA for membranes with 0.5 wt. (%) of graphene reached 152º, 149º-153º for membranes with nanosilica addition, 151º with 5.0 wt. (%) CdS, and 153º, 163º and 168º with the addition of 5 wt. (%), 10 wt. (%) and 15 wt. (%) of ZnS, respectively. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-01 |
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=S1516-14392013000300009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000300009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392013005000028 |
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.16 n.3 2013 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_ |
1754212662845112320 |