Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1999 |
Resumo: | The aim of this work was to study the impregnation of the photochromic dye Reversacol Graphit® in composite films of polycarbonate (PC) and silica gel, with the purpose of finding applications in photochromic lenses. Pure PC films were also impregnated in the same conditions, to verify the effect of the silica-gel addition. The composites films were produced in Si:PC ratios of 1:40 and 1:80 (m m-1), using the casting method . For the impregnation of the dye Reversacol Graphit® in the obtained films, the supercritical process was used due to its efficiency and benefits. The impregnation was made in the times of 15, 30, 45, 60, 90, 120, 150 and 180 minutes. The adopted temperature and pressure were 60ºC and 120 bar, respectively. The amount of pigment impregnated in Si:PC films – 1:40 and 1:80 (m m-1) was 29 and 23% of dye mass per composite mass, respectively, and for pure PC film it was only 2.2% dye mass per composite mass. From the thermal analyses, it was verified that the composite films presented greater thermal stability. From the technique of electronic microscopy, it was observed that pure PC films and the composites Si:PC – 1:40 and 1:80 (m m-1) presented a smooth and homogeneous surface. |
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Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999Impregnação de filmes do compósito de policarbonato (PC) e sílica-gel (Si) com corante fotocrômico em fluido supercrítico - DOI: 10.4025/actascitechnol.v32i1.1999compositespolycarbonatesilica gelimpregnationsupercritical fluidcompósitospolicarbonatosílica-gelimpregnaçãofluido supercríticoEngenharia QuímicaThe aim of this work was to study the impregnation of the photochromic dye Reversacol Graphit® in composite films of polycarbonate (PC) and silica gel, with the purpose of finding applications in photochromic lenses. Pure PC films were also impregnated in the same conditions, to verify the effect of the silica-gel addition. The composites films were produced in Si:PC ratios of 1:40 and 1:80 (m m-1), using the casting method . For the impregnation of the dye Reversacol Graphit® in the obtained films, the supercritical process was used due to its efficiency and benefits. The impregnation was made in the times of 15, 30, 45, 60, 90, 120, 150 and 180 minutes. The adopted temperature and pressure were 60ºC and 120 bar, respectively. The amount of pigment impregnated in Si:PC films – 1:40 and 1:80 (m m-1) was 29 and 23% of dye mass per composite mass, respectively, and for pure PC film it was only 2.2% dye mass per composite mass. From the thermal analyses, it was verified that the composite films presented greater thermal stability. From the technique of electronic microscopy, it was observed that pure PC films and the composites Si:PC – 1:40 and 1:80 (m m-1) presented a smooth and homogeneous surface.O objetivo deste trabalho foi estudar a impregnação do corante fotocromático Reversacol Graphit® em filmes do compósito de policarbonato (PC) e sílica-gel (Si), com a finalidade de obter aplicações em lentes fotocrômicas. Filmes de PC puros também foram impregnados nas mesmas condições, para verificar o efeito da adição de sílica-gel. Os filmes do compósito foram produzidos em proporções de Si:PC de 1:40 e 1:80 (m m-1), pelo método casting. Para a impregnação do corante Reversacol Graphit® nos filmes obtidos foi utilizado o processo supercrítico, pela sua eficiência e benefícios. A impregnação foi feita nos tempos de 15, 30, 45, 60, 90, 120, 150 e 180 min. A temperatura e a pressão adotadas foram de 60ºC e 120 bar. A quantidade de pigmento impregnado nos filmes de Si:PC – 1:40 e 1:80 (m m-1) foi de 29 e 23% de massa de corante por massa de compósito, respectivamente, e para o filme de PC puro foi de apenas 2,2% massa de corante por massa de compósito. Pelas análises térmicas, verificou-se que os filmes do compósito apresentaram maior estabilidade térmica. Pela técnica de microscopia eletrônica, observou-se que os filmes de PC puro e dos compósitos Si:PC – 1:40 e 1:80 (m m-1) apresentaram uma superfície lisa e homogênea.Universidade Estadual De Maringá2009-11-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionDesenvolvimento de produtoapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/199910.4025/actascitechnol.v32i1.1999Acta Scientiarum. Technology; Vol 32 No 1 (2010); 69-74Acta Scientiarum. Technology; v. 32 n. 1 (2010); 69-741806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1999/1999Lima, Fernanda de Almeida Fin deSantos, Onélia Aparecida AndreoPinheiro, Nanciinfo:eu-repo/semantics/openAccess2024-05-17T13:02:41Zoai:periodicos.uem.br/ojs:article/1999Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:41Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 Impregnação de filmes do compósito de policarbonato (PC) e sílica-gel (Si) com corante fotocrômico em fluido supercrítico - DOI: 10.4025/actascitechnol.v32i1.1999 |
title |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
spellingShingle |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 Lima, Fernanda de Almeida Fin de composites polycarbonate silica gel impregnation supercritical fluid compósitos policarbonato sílica-gel impregnação fluido supercrítico Engenharia Química |
title_short |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
title_full |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
title_fullStr |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
title_full_unstemmed |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
title_sort |
Impregnation of composite from polycarbonate (PC) and silica gel (Si) films with photochromic dye in supercritical fluid - DOI: 10.4025/actascitechnol.v32i1.1999 |
author |
Lima, Fernanda de Almeida Fin de |
author_facet |
Lima, Fernanda de Almeida Fin de Santos, Onélia Aparecida Andreo Pinheiro, Nanci |
author_role |
author |
author2 |
Santos, Onélia Aparecida Andreo Pinheiro, Nanci |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lima, Fernanda de Almeida Fin de Santos, Onélia Aparecida Andreo Pinheiro, Nanci |
dc.subject.por.fl_str_mv |
composites polycarbonate silica gel impregnation supercritical fluid compósitos policarbonato sílica-gel impregnação fluido supercrítico Engenharia Química |
topic |
composites polycarbonate silica gel impregnation supercritical fluid compósitos policarbonato sílica-gel impregnação fluido supercrítico Engenharia Química |
description |
The aim of this work was to study the impregnation of the photochromic dye Reversacol Graphit® in composite films of polycarbonate (PC) and silica gel, with the purpose of finding applications in photochromic lenses. Pure PC films were also impregnated in the same conditions, to verify the effect of the silica-gel addition. The composites films were produced in Si:PC ratios of 1:40 and 1:80 (m m-1), using the casting method . For the impregnation of the dye Reversacol Graphit® in the obtained films, the supercritical process was used due to its efficiency and benefits. The impregnation was made in the times of 15, 30, 45, 60, 90, 120, 150 and 180 minutes. The adopted temperature and pressure were 60ºC and 120 bar, respectively. The amount of pigment impregnated in Si:PC films – 1:40 and 1:80 (m m-1) was 29 and 23% of dye mass per composite mass, respectively, and for pure PC film it was only 2.2% dye mass per composite mass. From the thermal analyses, it was verified that the composite films presented greater thermal stability. From the technique of electronic microscopy, it was observed that pure PC films and the composites Si:PC – 1:40 and 1:80 (m m-1) presented a smooth and homogeneous surface. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-11-13 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Desenvolvimento de produto |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1999 10.4025/actascitechnol.v32i1.1999 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1999 |
identifier_str_mv |
10.4025/actascitechnol.v32i1.1999 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1999/1999 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 32 No 1 (2010); 69-74 Acta Scientiarum. Technology; v. 32 n. 1 (2010); 69-74 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
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1799315332038393856 |