X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties

Composites of isotactic polypropylene with various contents of white clay or titanium dioxide TiO 2 were prepared by extrusion molding. The extruded composites were melt-pressed at two different temperatures, and, thereafter, either slowly cooled, or quenched to room temperatures. It is shown that t...

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Detalles Bibliográficos
Autores: Cagiao, M. E., Baltá Calleja, Francisco José, Spieckermann, F., Scholtyssek, S., Mina, M.F., Bhuiyan, M.A.H.
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/65907
Acceso en línea:http://hdl.handle.net/10261/65907
Access Level:acceso abierto
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spelling X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical propertiesCagiao, M. E.Baltá Calleja, Francisco JoséSpieckermann, F.Scholtyssek, S.Mina, M.F.Bhuiyan, M.A.H.Composites of isotactic polypropylene with various contents of white clay or titanium dioxide TiO 2 were prepared by extrusion molding. The extruded composites were melt-pressed at two different temperatures, and, thereafter, either slowly cooled, or quenched to room temperatures. It is shown that the structure of all the samples, as revealed by wide-angle X-ray scattering and small-angle X-ray scattering (SAXS), depends on the processing conditions. The lack of SAXS maxima in the composites suggests that the presence of the microadditives hinders the stacking of iPP lamellae. Furthermore, the microindentation hardness H in the slowly cooled composites is influenced by the type and amount of the filler used. However, in the quenched samples H depends only on the amount of the filler used, and not on its type. In case of the quenched iPP/clay composites, the relationship between H and the Young's modulus E is found to be H/E ≈ 0.12, in good agreement with Struik's theoretical predictions of σ e ≈ E/30, in consonance with results previously obtained for a series of polyethylene samples with different morphology. © 2011 Wiley Periodicals, Inc.Contract grant sponsor: Spanish Ministry of Science and Innovation (MICINN); contract grant numbers: FIS2010- 18069, MAT2009-00789. Contract grant sponsors: Alexander von Humboldt Foundation, Germany, EC Research Infrastructure (FP6 Program) (Desy Project II-07-031 EC).Peer reviewedPeer ReviewedJohn Wiley & SonsMinisterio de Ciencia e Innovación (España)Alexander von Humboldt FoundationConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2013201320122013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/65907reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://doi.org/10.1002/app.34716Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/659072026-05-22T06:33:51Z
dc.title.none.fl_str_mv X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
title X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
spellingShingle X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
Cagiao, M. E.
title_short X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
title_full X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
title_fullStr X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
title_full_unstemmed X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
title_sort X-ray diffraction study of iPP/cand iPP/TiO 2 composites relating to micromechanical properties
dc.creator.none.fl_str_mv Cagiao, M. E.
Baltá Calleja, Francisco José
Spieckermann, F.
Scholtyssek, S.
Mina, M.F.
Bhuiyan, M.A.H.
author Cagiao, M. E.
author_facet Cagiao, M. E.
Baltá Calleja, Francisco José
Spieckermann, F.
Scholtyssek, S.
Mina, M.F.
Bhuiyan, M.A.H.
author_role author
author2 Baltá Calleja, Francisco José
Spieckermann, F.
Scholtyssek, S.
Mina, M.F.
Bhuiyan, M.A.H.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Alexander von Humboldt Foundation
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Composites of isotactic polypropylene with various contents of white clay or titanium dioxide TiO 2 were prepared by extrusion molding. The extruded composites were melt-pressed at two different temperatures, and, thereafter, either slowly cooled, or quenched to room temperatures. It is shown that the structure of all the samples, as revealed by wide-angle X-ray scattering and small-angle X-ray scattering (SAXS), depends on the processing conditions. The lack of SAXS maxima in the composites suggests that the presence of the microadditives hinders the stacking of iPP lamellae. Furthermore, the microindentation hardness H in the slowly cooled composites is influenced by the type and amount of the filler used. However, in the quenched samples H depends only on the amount of the filler used, and not on its type. In case of the quenched iPP/clay composites, the relationship between H and the Young's modulus E is found to be H/E ≈ 0.12, in good agreement with Struik's theoretical predictions of σ e ≈ E/30, in consonance with results previously obtained for a series of polyethylene samples with different morphology. © 2011 Wiley Periodicals, Inc.
publishDate 2012
dc.date.none.fl_str_mv 2012
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/65907
url http://hdl.handle.net/10261/65907
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://doi.org/10.1002/app.34716
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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