Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems

The relationship between the morphology and the mechanical properties of nanostructured blends,comprising an asymmetric styrene/butadiene star block copolymer,exhibiting cocontinuous-like morphology and low molar mass homopolymers, was studied by electron microscopy, microindentation hardness, and t...

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Detalles Bibliográficos
Autores: Adhikari, R., Lebek, Werner, Godehardt, Reinhold, Michler, G.H., Cagiao, M. E., Baltá Calleja, Francisco José, Knoll, Konrad
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2006
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/79481
Acceso en línea:http://hdl.handle.net/10261/79481
Access Level:acceso abierto
Palabra clave:Block copolymers
Electron microscopy
Microhardness
Deformation behavior
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spelling Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene SystemsAdhikari, R.Lebek, WernerGodehardt, ReinholdMichler, G.H.Cagiao, M. E.Baltá Calleja, Francisco JoséKnoll, KonradBlock copolymersElectron microscopyMicrohardnessDeformation behaviorThe relationship between the morphology and the mechanical properties of nanostructured blends,comprising an asymmetric styrene/butadiene star block copolymer,exhibiting cocontinuous-like morphology and low molar mass homopolymers, was studied by electron microscopy, microindentation hardness, and tensile testing methods. Results show that the deformation behavior of these systems is significantly modified by the presence of unentangled homopolymer chains, leading partly to a decrease in mechanical properties. In contrast to common polymer blends, in which usually, the hardness values do not markedly deviate from the additivity law, the H-values in the system investigated show large deviations from the linear additivity behavior. The observed anomalous behavior is discussed in terms of the enhanced local flow processes induced by the phase-separated morphology at a nanometer scale.Peer reviewed201320132006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/79481reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1002/app.22796info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/794812026-05-22T06:33:51Z
dc.title.none.fl_str_mv Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
title Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
spellingShingle Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
Adhikari, R.
Block copolymers
Electron microscopy
Microhardness
Deformation behavior
title_short Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
title_full Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
title_fullStr Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
title_full_unstemmed Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
title_sort Relationship between Nanostructure and Deformation Behavior of Microphase-Separated Styrene/Butadiene Systems
dc.creator.none.fl_str_mv Adhikari, R.
Lebek, Werner
Godehardt, Reinhold
Michler, G.H.
Cagiao, M. E.
Baltá Calleja, Francisco José
Knoll, Konrad
author Adhikari, R.
author_facet Adhikari, R.
Lebek, Werner
Godehardt, Reinhold
Michler, G.H.
Cagiao, M. E.
Baltá Calleja, Francisco José
Knoll, Konrad
author_role author
author2 Lebek, Werner
Godehardt, Reinhold
Michler, G.H.
Cagiao, M. E.
Baltá Calleja, Francisco José
Knoll, Konrad
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Block copolymers
Electron microscopy
Microhardness
Deformation behavior
topic Block copolymers
Electron microscopy
Microhardness
Deformation behavior
description The relationship between the morphology and the mechanical properties of nanostructured blends,comprising an asymmetric styrene/butadiene star block copolymer,exhibiting cocontinuous-like morphology and low molar mass homopolymers, was studied by electron microscopy, microindentation hardness, and tensile testing methods. Results show that the deformation behavior of these systems is significantly modified by the presence of unentangled homopolymer chains, leading partly to a decrease in mechanical properties. In contrast to common polymer blends, in which usually, the hardness values do not markedly deviate from the additivity law, the H-values in the system investigated show large deviations from the linear additivity behavior. The observed anomalous behavior is discussed in terms of the enhanced local flow processes induced by the phase-separated morphology at a nanometer scale.
publishDate 2006
dc.date.none.fl_str_mv 2006
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/79481
url http://hdl.handle.net/10261/79481
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1002/app.22796
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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 15,811543

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