Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/25079 |
Resumo: | Single polymer composites (SPCs) based on polyamide 6 (PA6) were prepared by in-mold activated anionic ring-opening polymerization (AAROP) of capro- lactam in the presence of PA6 textile fibers. The influence of the reinforcing fibers content, their surface treatment, as well as of the temperature of AAROP upon the morphol- ogy, crystalline structure, and mechanical properties of the resulting SPCs was followed. The presence of oriented transcrystalline layer (TCL) on the surface of the rein- forcing fibers was demonstrated by means of microscopy methods. Its orientation and polymorph structure were determined by synchrotron wide-angle X-ray scattering. Studies on the mechanical behavior in tension of the SPCs showed a well-expressed growth of the stress at break (70–80 %) and deformation at break (up to 150–190 %) in composites with 15–20 wt% of reinforcements. The best mechanical properties were found in SPCs whose rein- forcing fibers were solvent-pretreated prior to AAROP in order to remove the original finish. In these samples a stronger adhesion at the fiber/matrix interface was proved by scanning electron microscopy of cryofractured samples. This effect was related to a thinner TCL in which the α-to-γ polymorph transition is impeded. |
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Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerizationAnionic polymerizationSingle-polymer compositesMechanical propertiesPolymorph transitions in polyamidesX-ray scatteringStructure-properties relationshipScience & TechnologySingle polymer composites (SPCs) based on polyamide 6 (PA6) were prepared by in-mold activated anionic ring-opening polymerization (AAROP) of capro- lactam in the presence of PA6 textile fibers. The influence of the reinforcing fibers content, their surface treatment, as well as of the temperature of AAROP upon the morphol- ogy, crystalline structure, and mechanical properties of the resulting SPCs was followed. The presence of oriented transcrystalline layer (TCL) on the surface of the rein- forcing fibers was demonstrated by means of microscopy methods. Its orientation and polymorph structure were determined by synchrotron wide-angle X-ray scattering. Studies on the mechanical behavior in tension of the SPCs showed a well-expressed growth of the stress at break (70–80 %) and deformation at break (up to 150–190 %) in composites with 15–20 wt% of reinforcements. The best mechanical properties were found in SPCs whose rein- forcing fibers were solvent-pretreated prior to AAROP in order to remove the original finish. In these samples a stronger adhesion at the fiber/matrix interface was proved by scanning electron microscopy of cryofractured samples. This effect was related to a thinner TCL in which the α-to-γ polymorph transition is impeded.Strategic Project LA 25-2011-2012 financed by Fundação para a Ciência e a Tecnologia (FCT) - PortugalHASYLAB at DESY (Grant Number II-07- 011EC)FCT post-doctoral award SFRH/BPD/45252/2008, co-financed by QREN-POPH program of EU.SpringerUniversidade do MinhoDencheva, Nadya VasilevaDenchev, Z.Pouzada, A. S.Sampaio, Ana SofiaRocha, A. M.20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/25079eng0022-246110.1007/s10853-013-7546-8http://link.springer.com/article/10.1007/s10853-013-7546-8info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:49:17Zoai:repositorium.sdum.uminho.pt:1822/25079Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:47:43.201666Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
title |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
spellingShingle |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization Dencheva, Nadya Vasileva Anionic polymerization Single-polymer composites Mechanical properties Polymorph transitions in polyamides X-ray scattering Structure-properties relationship Science & Technology |
title_short |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
title_full |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
title_fullStr |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
title_full_unstemmed |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
title_sort |
Structure–properties relationship in single polymer composites based on polyamide 6 prepared by in-mold anionic polymerization |
author |
Dencheva, Nadya Vasileva |
author_facet |
Dencheva, Nadya Vasileva Denchev, Z. Pouzada, A. S. Sampaio, Ana Sofia Rocha, A. M. |
author_role |
author |
author2 |
Denchev, Z. Pouzada, A. S. Sampaio, Ana Sofia Rocha, A. M. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Dencheva, Nadya Vasileva Denchev, Z. Pouzada, A. S. Sampaio, Ana Sofia Rocha, A. M. |
dc.subject.por.fl_str_mv |
Anionic polymerization Single-polymer composites Mechanical properties Polymorph transitions in polyamides X-ray scattering Structure-properties relationship Science & Technology |
topic |
Anionic polymerization Single-polymer composites Mechanical properties Polymorph transitions in polyamides X-ray scattering Structure-properties relationship Science & Technology |
description |
Single polymer composites (SPCs) based on polyamide 6 (PA6) were prepared by in-mold activated anionic ring-opening polymerization (AAROP) of capro- lactam in the presence of PA6 textile fibers. The influence of the reinforcing fibers content, their surface treatment, as well as of the temperature of AAROP upon the morphol- ogy, crystalline structure, and mechanical properties of the resulting SPCs was followed. The presence of oriented transcrystalline layer (TCL) on the surface of the rein- forcing fibers was demonstrated by means of microscopy methods. Its orientation and polymorph structure were determined by synchrotron wide-angle X-ray scattering. Studies on the mechanical behavior in tension of the SPCs showed a well-expressed growth of the stress at break (70–80 %) and deformation at break (up to 150–190 %) in composites with 15–20 wt% of reinforcements. The best mechanical properties were found in SPCs whose rein- forcing fibers were solvent-pretreated prior to AAROP in order to remove the original finish. In these samples a stronger adhesion at the fiber/matrix interface was proved by scanning electron microscopy of cryofractured samples. This effect was related to a thinner TCL in which the α-to-γ polymorph transition is impeded. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 2013-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/25079 |
url |
http://hdl.handle.net/1822/25079 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0022-2461 10.1007/s10853-013-7546-8 http://link.springer.com/article/10.1007/s10853-013-7546-8 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133052069216256 |