Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure

5 pags., figs. 4.

Detalles Bibliográficos
Autores: Azzurri, F., Flores, Araceli, Alfonso, G. C., Sics, I., Hsiao, B.S., Baltá Calleja, Francisco José
Tipo de recurso: artículo
Fecha de publicación:2003
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/238119
Acceso en línea:http://hdl.handle.net/10261/238119
Access Level:acceso abierto
Palabra clave:Isotactic polybutene-1
Polymorphism
Microhardness.
id ES_7cce9d54aa77ebee1237d9e738a2a0bb
oai_identifier_str oai:digital.csic.es:10261/238119
network_acronym_str ES
network_name_str España
repository_id_str
spelling Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructureAzzurri, F.Flores, AraceliAlfonso, G. C.Sics, I.Hsiao, B.S.Baltá Calleja, Francisco JoséIsotactic polybutene-1PolymorphismMicrohardness.5 pags., figs. 4.The influence of polymorphism on the micromechanical properties of isotactic polybutene-1 (iPBu-1) has been investigated by means of the microhardness technique. Hardness data, H, of form I (hexagonal) are shown to be notably larger than those of form II (tetragonal). The H values of both polymorphic forms are shown to depend on the molecular weight, M,w, and the crystallization temperature, Tc. The hardness behaviour with Mw and Tc has been correlated to the changes of degree of crystallinity and nanostructure as derived from small angle X-ray scattering. The hardness values for iPBu-1 infinitely thick crystals (H∞c), of forms I and II, have been calculated for the first time. H∞c of form I is shown to be notably larger than that of form II. This result is a consequence of the denser packing of the hexagonal crystal modification, and accounts for the large difference in H values found for forms I and II. Finally, the variation of the mechanical b-parameter, proportional to the surface-free energy of the crystals, with molecular weight is discussed. © 2002 Elsevier Science Ltd. All rights reserved.ElsevierMinisterio de Ciencia y Tecnología (España)European Cooperation in Science and TechnologyNational Science Foundation (US)Comunidad de MadridConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120032021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/238119reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/S0032-3861(02)00864-9Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2381192026-05-22T06:33:51Z
dc.title.none.fl_str_mv Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
title Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
spellingShingle Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
Azzurri, F.
Isotactic polybutene-1
Polymorphism
Microhardness.
title_short Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
title_full Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
title_fullStr Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
title_full_unstemmed Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
title_sort Polymorphism of isotactic polybutene-1 as revealed by microindentation hardness. Part II: Correlations to microstructure
dc.creator.none.fl_str_mv Azzurri, F.
Flores, Araceli
Alfonso, G. C.
Sics, I.
Hsiao, B.S.
Baltá Calleja, Francisco José
author Azzurri, F.
author_facet Azzurri, F.
Flores, Araceli
Alfonso, G. C.
Sics, I.
Hsiao, B.S.
Baltá Calleja, Francisco José
author_role author
author2 Flores, Araceli
Alfonso, G. C.
Sics, I.
Hsiao, B.S.
Baltá Calleja, Francisco José
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia y Tecnología (España)
European Cooperation in Science and Technology
National Science Foundation (US)
Comunidad de Madrid
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Isotactic polybutene-1
Polymorphism
Microhardness.
topic Isotactic polybutene-1
Polymorphism
Microhardness.
description 5 pags., figs. 4.
publishDate 2003
dc.date.none.fl_str_mv 2003
2021
2021
2021
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/10261/238119
url http://hdl.handle.net/10261/238119
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/S0032-3861(02)00864-9
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1869411617222950912
score 15,81155

Similares en LA Referencia