Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles

In the second part of this series the influence of monomer concentration on the chemical structure and the shape and size of poly(aryl ether ketone ether ketone ketone) (PEKEKK) particles was reported. The present study of the thermal behavior and microstructure of aromatic polyketone samples in the...

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Autores: Rueda, Daniel R., Zolotukhin, M., Cagiao, M. E., Baltá Calleja, Francisco José, Villers, D., Dosière, M.
Tipo de recurso: artículo
Fecha de publicación:1996
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/78998
Acceso en línea:http://hdl.handle.net/10261/78998
Access Level:acceso abierto
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spelling Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK ParticlesRueda, Daniel R.Zolotukhin, M.Cagiao, M. E.Baltá Calleja, Francisco JoséVillers, D.Dosière, M.In the second part of this series the influence of monomer concentration on the chemical structure and the shape and size of poly(aryl ether ketone ether ketone ketone) (PEKEKK) particles was reported. The present study of the thermal behavior and microstructure of aromatic polyketone samples in the form of particles has been carried out by means of differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). Samples before and after reprecipitation and annealing were investigated. Similar to other polyketones, PEKEKK shows two polymorphic forms: form II, less stable, is currently observed in the samples, while the reprecipitated polymer preferentially shows form I. Form II is partially converted into form I upon short annealing treatment of the material. The semicrystalline materials show melting points and glass transition temperatures which are higher for the samples with higher molecular weight and more regular chain structure. A comparison of thermal properties of “as obtained” and "reprecipitated” samples reveals the influence of the particle architecture on the chain mobility. The latter determines the ability of polyketone chains to crystallize. Infrared dichroism was also used to characterize the arrangement of polymer chains inside the polyketone particles showing crystal habits.Peer reviewed201320131996info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/78998reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/789982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
title Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
spellingShingle Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
Rueda, Daniel R.
title_short Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
title_full Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
title_fullStr Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
title_full_unstemmed Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
title_sort Aromatic Polymers Obtained by Precipitation Polycondensation. 3. Thermal Behavior and Microstructure of PEKEKK Particles
dc.creator.none.fl_str_mv Rueda, Daniel R.
Zolotukhin, M.
Cagiao, M. E.
Baltá Calleja, Francisco José
Villers, D.
Dosière, M.
author Rueda, Daniel R.
author_facet Rueda, Daniel R.
Zolotukhin, M.
Cagiao, M. E.
Baltá Calleja, Francisco José
Villers, D.
Dosière, M.
author_role author
author2 Zolotukhin, M.
Cagiao, M. E.
Baltá Calleja, Francisco José
Villers, D.
Dosière, M.
author2_role author
author
author
author
author
description In the second part of this series the influence of monomer concentration on the chemical structure and the shape and size of poly(aryl ether ketone ether ketone ketone) (PEKEKK) particles was reported. The present study of the thermal behavior and microstructure of aromatic polyketone samples in the form of particles has been carried out by means of differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). Samples before and after reprecipitation and annealing were investigated. Similar to other polyketones, PEKEKK shows two polymorphic forms: form II, less stable, is currently observed in the samples, while the reprecipitated polymer preferentially shows form I. Form II is partially converted into form I upon short annealing treatment of the material. The semicrystalline materials show melting points and glass transition temperatures which are higher for the samples with higher molecular weight and more regular chain structure. A comparison of thermal properties of “as obtained” and "reprecipitated” samples reveals the influence of the particle architecture on the chain mobility. The latter determines the ability of polyketone chains to crystallize. Infrared dichroism was also used to characterize the arrangement of polymer chains inside the polyketone particles showing crystal habits.
publishDate 1996
dc.date.none.fl_str_mv 1996
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/10261/78998
url http://hdl.handle.net/10261/78998
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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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