Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/75722 |
Resumo: | Reactive blends of metallocene polyolefin elastomers (POE)/polypropylene (PP) with 60/40 composition were prepared with an organic peroxide, 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane, and a bis-azide derivative, diphenyloxid-4,4’-bis(sulfonylazide) (BSA). Ethylene-1-butene (EB) and ethylene-1-octene (EO) copolymers and elastomeric polypropylene (ePP) were used as the elastomeric phase. The effect of elastomeric phase on the thermal, rheological, morphological and mechanical properties of the thermoplastic vulcanizates (TPVs) or dynamic vulcanizates were studied. All TPVs depicted pseudoplastic behavior and blends cured with azide curative showed higher viscosities. The TPVs showed both dispersed and continuous phase morphology that depends on the elastomeric phase type revealing a limited degree of compatibility between PP and the elastomers EO or EB. On the other hand, the TPV PP/ePP showed a uniform morphology suggesting an improved compatibility. Substantial changes observed in physical properties were explained on the basis of blends’ morphology and dynamic vulcanization. The results confirm that the mechanical properties are more influenced by the elastomeric phase than by the curative agent. This study revealed a broad new range of opportunities for POE-based TPVs. |
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Domingues Junior, Nei SebastiaoForte, Maria Madalena de CamargoRiegel, Izabel Cristina2013-07-09T01:52:04Z20120104-1428http://hdl.handle.net/10183/75722000864952Reactive blends of metallocene polyolefin elastomers (POE)/polypropylene (PP) with 60/40 composition were prepared with an organic peroxide, 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane, and a bis-azide derivative, diphenyloxid-4,4’-bis(sulfonylazide) (BSA). Ethylene-1-butene (EB) and ethylene-1-octene (EO) copolymers and elastomeric polypropylene (ePP) were used as the elastomeric phase. The effect of elastomeric phase on the thermal, rheological, morphological and mechanical properties of the thermoplastic vulcanizates (TPVs) or dynamic vulcanizates were studied. All TPVs depicted pseudoplastic behavior and blends cured with azide curative showed higher viscosities. The TPVs showed both dispersed and continuous phase morphology that depends on the elastomeric phase type revealing a limited degree of compatibility between PP and the elastomers EO or EB. On the other hand, the TPV PP/ePP showed a uniform morphology suggesting an improved compatibility. Substantial changes observed in physical properties were explained on the basis of blends’ morphology and dynamic vulcanization. The results confirm that the mechanical properties are more influenced by the elastomeric phase than by the curative agent. This study revealed a broad new range of opportunities for POE-based TPVs.application/pdfporPolímeros (São Carlos): ciência e tecnologia. São Carlos, SP. vol. 22, no. 3 (jul./set. 2012), p. 213-219Elastômeros termoplásticosReologiaReactive blend,Thermoplastic vulcanizatesMetallocene polyolefin elastomersRheologyThermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropyleneinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000864952.pdf000864952.pdfTexto completo (inglês)application/pdf1522793http://www.lume.ufrgs.br/bitstream/10183/75722/1/000864952.pdf48472c55c135df756d9e9f5895628d6bMD51TEXT000864952.pdf.txt000864952.pdf.txtExtracted Texttext/plain31649http://www.lume.ufrgs.br/bitstream/10183/75722/2/000864952.pdf.txt5f34cdf3c045aadc1adfced4c36286b1MD52THUMBNAIL000864952.pdf.jpg000864952.pdf.jpgGenerated Thumbnailimage/jpeg2149http://www.lume.ufrgs.br/bitstream/10183/75722/3/000864952.pdf.jpg8f270cef2f1da4e6a3513f10e182d726MD5310183/757222022-06-09 04:45:37.094145oai:www.lume.ufrgs.br:10183/75722Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-06-09T07:45:37Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
title |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
spellingShingle |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene Domingues Junior, Nei Sebastiao Elastômeros termoplásticos Reologia Reactive blend, Thermoplastic vulcanizates Metallocene polyolefin elastomers Rheology |
title_short |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
title_full |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
title_fullStr |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
title_full_unstemmed |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
title_sort |
Thermal and rheological behavior of reactive blends from metallocene olefin elastomers and polypropylene |
author |
Domingues Junior, Nei Sebastiao |
author_facet |
Domingues Junior, Nei Sebastiao Forte, Maria Madalena de Camargo Riegel, Izabel Cristina |
author_role |
author |
author2 |
Forte, Maria Madalena de Camargo Riegel, Izabel Cristina |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Domingues Junior, Nei Sebastiao Forte, Maria Madalena de Camargo Riegel, Izabel Cristina |
dc.subject.por.fl_str_mv |
Elastômeros termoplásticos Reologia |
topic |
Elastômeros termoplásticos Reologia Reactive blend, Thermoplastic vulcanizates Metallocene polyolefin elastomers Rheology |
dc.subject.eng.fl_str_mv |
Reactive blend, Thermoplastic vulcanizates Metallocene polyolefin elastomers Rheology |
description |
Reactive blends of metallocene polyolefin elastomers (POE)/polypropylene (PP) with 60/40 composition were prepared with an organic peroxide, 2,5-dimethyl-2,5-di-(t-butylperoxy)hexane, and a bis-azide derivative, diphenyloxid-4,4’-bis(sulfonylazide) (BSA). Ethylene-1-butene (EB) and ethylene-1-octene (EO) copolymers and elastomeric polypropylene (ePP) were used as the elastomeric phase. The effect of elastomeric phase on the thermal, rheological, morphological and mechanical properties of the thermoplastic vulcanizates (TPVs) or dynamic vulcanizates were studied. All TPVs depicted pseudoplastic behavior and blends cured with azide curative showed higher viscosities. The TPVs showed both dispersed and continuous phase morphology that depends on the elastomeric phase type revealing a limited degree of compatibility between PP and the elastomers EO or EB. On the other hand, the TPV PP/ePP showed a uniform morphology suggesting an improved compatibility. Substantial changes observed in physical properties were explained on the basis of blends’ morphology and dynamic vulcanization. The results confirm that the mechanical properties are more influenced by the elastomeric phase than by the curative agent. This study revealed a broad new range of opportunities for POE-based TPVs. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012 |
dc.date.accessioned.fl_str_mv |
2013-07-09T01:52:04Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
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info:eu-repo/semantics/publishedVersion |
format |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/75722 |
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0104-1428 |
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000864952 |
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0104-1428 000864952 |
url |
http://hdl.handle.net/10183/75722 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.ispartof.pt_BR.fl_str_mv |
Polímeros (São Carlos): ciência e tecnologia. São Carlos, SP. vol. 22, no. 3 (jul./set. 2012), p. 213-219 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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