Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis

Detalhes bibliográficos
Autor(a) principal: Dencheva, Nadya Vasileva
Data de Publicação: 2022
Outros Autores: Braz, Joana Filipa Barros, Denchev, Z.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/76926
Resumo: Neat and hybrid polyamide 12 (PA12) based powders are important raw materials for additive manufacturing. This study describes a facile method for the synthesis of pure, hybrid and copolymeric microparticulate materials based on one-pot activated anionic ring-opening polymerization (AAROP) of laurolactam in solution. The results reveal the possibility to obtain in good yields, for reaction times of 2 h and temperatures of up to 110 ºC neat and hybrid PA12 microparticles (MP) carrying metal or carbon fillers. CopolymericPA12/PA6 MP can also be successfully prepared. All MP materials are analyzed by spectral, microscopy, thermal, and synchrotron X-ray scattering methods in order to clarify their morphology, chemical and crystalline structure, melting and degradation behavior. The melting temperature of the PA12MP is lower than of the commercial PA12, the presence of metal particles with PA6 additionally decrease it well below 170ºC. The composites prepared by compression molding of PA12 MP display elastic modulus of up to 1.49 GPa, the stresses at yield and break reaching 50 and 69 MPa, respectively. It is concluded that the neat, hybrid, and copolymeric pulverulent materials obtained via microencapsulation by AAROP in solution may be useful in additive manufacturing processing.
id RCAP_8d1fbe1da70179b4d62831e6bb02a137
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/76926
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basisCopolymersPolyamide 12Anionic ring-opening polymerizationTensile propertiesSynchrotron X-ray WAXS/SAXSRing-opening polymerizationSynthesis and processing techniquesThermal propertiespolyamidesScience & TechnologyNeat and hybrid polyamide 12 (PA12) based powders are important raw materials for additive manufacturing. This study describes a facile method for the synthesis of pure, hybrid and copolymeric microparticulate materials based on one-pot activated anionic ring-opening polymerization (AAROP) of laurolactam in solution. The results reveal the possibility to obtain in good yields, for reaction times of 2 h and temperatures of up to 110 ºC neat and hybrid PA12 microparticles (MP) carrying metal or carbon fillers. CopolymericPA12/PA6 MP can also be successfully prepared. All MP materials are analyzed by spectral, microscopy, thermal, and synchrotron X-ray scattering methods in order to clarify their morphology, chemical and crystalline structure, melting and degradation behavior. The melting temperature of the PA12MP is lower than of the commercial PA12, the presence of metal particles with PA6 additionally decrease it well below 170ºC. The composites prepared by compression molding of PA12 MP display elastic modulus of up to 1.49 GPa, the stresses at yield and break reaching 50 and 69 MPa, respectively. It is concluded that the neat, hybrid, and copolymeric pulverulent materials obtained via microencapsulation by AAROP in solution may be useful in additive manufacturing processing.The authors gratefully acknowledge the financial sup port of Fundaçao para a Ciência e Tecnologia ~ (FCT), project UID/CTM/50025/2019. Special thank is due to the ALBA synchrotron governance for financing our WAXS/SAXS experiments at NCD SWEET beamline in the framework of the project ID 2018/022726. N. Dencheva is also grateful for the financial support of FCT in the frames of the personal program contract CTTI-51/18-IPC. J. Braz acknowledges the support of the FCT UI/BD/150854/2021 PhD grant.John Wiley & SonsUniversidade do MinhoDencheva, Nadya VasilevaBraz, Joana Filipa BarrosDenchev, Z.20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/76926eng0021-89951097-462810.1002/app.51784https://onlinelibrary.wiley.com/doi/full/10.1002/app.51784info: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:RCAAP2023-07-21T12:02:43Zoai:repositorium.sdum.uminho.pt:1822/76926Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:52:45.862702Repositório 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 Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
title Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
spellingShingle Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
Dencheva, Nadya Vasileva
Copolymers
Polyamide 12
Anionic ring-opening polymerization
Tensile properties
Synchrotron X-ray WAXS/SAXS
Ring-opening polymerization
Synthesis and processing techniques
Thermal properties
polyamides
Science & Technology
title_short Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
title_full Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
title_fullStr Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
title_full_unstemmed Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
title_sort Synthesis and properties of neat, hybrid, and copolymeric polyamide 12 microparticles and composites on their basis
author Dencheva, Nadya Vasileva
author_facet Dencheva, Nadya Vasileva
Braz, Joana Filipa Barros
Denchev, Z.
author_role author
author2 Braz, Joana Filipa Barros
Denchev, Z.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Dencheva, Nadya Vasileva
Braz, Joana Filipa Barros
Denchev, Z.
dc.subject.por.fl_str_mv Copolymers
Polyamide 12
Anionic ring-opening polymerization
Tensile properties
Synchrotron X-ray WAXS/SAXS
Ring-opening polymerization
Synthesis and processing techniques
Thermal properties
polyamides
Science & Technology
topic Copolymers
Polyamide 12
Anionic ring-opening polymerization
Tensile properties
Synchrotron X-ray WAXS/SAXS
Ring-opening polymerization
Synthesis and processing techniques
Thermal properties
polyamides
Science & Technology
description Neat and hybrid polyamide 12 (PA12) based powders are important raw materials for additive manufacturing. This study describes a facile method for the synthesis of pure, hybrid and copolymeric microparticulate materials based on one-pot activated anionic ring-opening polymerization (AAROP) of laurolactam in solution. The results reveal the possibility to obtain in good yields, for reaction times of 2 h and temperatures of up to 110 ºC neat and hybrid PA12 microparticles (MP) carrying metal or carbon fillers. CopolymericPA12/PA6 MP can also be successfully prepared. All MP materials are analyzed by spectral, microscopy, thermal, and synchrotron X-ray scattering methods in order to clarify their morphology, chemical and crystalline structure, melting and degradation behavior. The melting temperature of the PA12MP is lower than of the commercial PA12, the presence of metal particles with PA6 additionally decrease it well below 170ºC. The composites prepared by compression molding of PA12 MP display elastic modulus of up to 1.49 GPa, the stresses at yield and break reaching 50 and 69 MPa, respectively. It is concluded that the neat, hybrid, and copolymeric pulverulent materials obtained via microencapsulation by AAROP in solution may be useful in additive manufacturing processing.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01T00:00:00Z
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/1822/76926
url http://hdl.handle.net/1822/76926
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0021-8995
1097-4628
10.1002/app.51784
https://onlinelibrary.wiley.com/doi/full/10.1002/app.51784
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 John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
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
_version_ 1799132304543580160

Registros relacionados