Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness

5 pags., 6 figs., 2 tabs.

Detalles Bibliográficos
Autores: Baltá Calleja, Francisco José, Giri, L., Michler, G.H., Naumann, I.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:1997
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/224099
Acceso en línea:http://hdl.handle.net/10261/224099
Access Level:acceso abierto
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spelling Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardnessBaltá Calleja, Francisco JoséGiri, L.Michler, G.H.Naumann, I.5 pags., 6 figs., 2 tabs.The microhardness of low density polyethylene (LDPE) fractions and of high density polyethylene (HDPE) samples has been studied as a function of molecular weight in the range of about 2 x 104 up to 4 x 106. Details of the lamellar structure were determined by transmission electron microscopy (TEM). The observed decrease of hardness with increasing molecular weight is mainly due to the increase in thickness of the interlamellar layers (i.e. a decrease of crystallinity). After chemical treatment with chlorosulfonic acid and with OsO4 the samples show a drastic hardness increase. The kinetics of OsO4 treatment as revealed by microhardness has been examined. The hardness increase is explained in terms of the large reduction in molecular mobility of the amorphous, interlamellar layers. The strongest hardening effects arise in consequence of the preferred reaction of these defect layers with increasing molecular weight. © 1997 Elsevier Science Ltd.The authors are indebted to DGICYT (Grant PB94- 0049), Spain, and DAAD, Germany, and to DGICYT (Grant HA95-131), Spain, for generous support of this work. FJBC wishes to thank the Alexander von Humboldt Stiftung for the tenure of a research award during part of this worElsevier BVDirección General de Investigación Científica y Técnica, DGICT (España)Alexander von Humboldt FoundationGerman Academic Exchange ServiceConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202019972020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/224099reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/S0032-3861(97)00140-7Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2240992026-05-22T06:33:51Z
dc.title.none.fl_str_mv Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
title Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
spellingShingle Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
Baltá Calleja, Francisco José
title_short Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
title_full Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
title_fullStr Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
title_full_unstemmed Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
title_sort Kinetics of chlorosulfonation and OsO4 attack in the interlamellar regions of low and high density polyethylene studied by microhardness
dc.creator.none.fl_str_mv Baltá Calleja, Francisco José
Giri, L.
Michler, G.H.
Naumann, I.
author Baltá Calleja, Francisco José
author_facet Baltá Calleja, Francisco José
Giri, L.
Michler, G.H.
Naumann, I.
author_role author
author2 Giri, L.
Michler, G.H.
Naumann, I.
author2_role author
author
author
dc.contributor.none.fl_str_mv Dirección General de Investigación Científica y Técnica, DGICT (España)
Alexander von Humboldt Foundation
German Academic Exchange Service
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 5 pags., 6 figs., 2 tabs.
publishDate 1997
dc.date.none.fl_str_mv 1997
2020
2020
2020
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/10261/224099
url http://hdl.handle.net/10261/224099
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(97)00140-7
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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