Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1063/1.1619912 http://hdl.handle.net/11449/232708 |
Resumo: | Glassy Polymeric Carbon (GPC) has medical applications owing to its inertness and biocompatible characteristics. Commercial GPC prosthetics include mitral, aortic and hydrocephalic valves. Surface treatment of GPC increases the adhesion of endothelic tissue on GPC and avoids the occurrence of thrombus in cardiac implant. In this work, ion beam was used to improve the mechanical characteristics of GPC surface. Hardness was measured as a function of depth in precursor and GPC samples heat treated from 300 to 2500 °C before and after bombardment with energetic ions of silicon, carbon, oxygen and gold at energies of 5, 6, 8 and 10 MeV and fluences between 1.0×1013 and 1.0×1016 ions/cm2. Comparison shows that hardness increases of the bombarded samples depend on heat treatment temperature. We verify that ion bombardment promotes carbonization due to an increased linkage between the chains of the polymeric material in lateral groups that are more numerous for samples heat treated to 700 °C. |
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Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical ApplicationsGlassy Polymeric Carbon (GPC) has medical applications owing to its inertness and biocompatible characteristics. Commercial GPC prosthetics include mitral, aortic and hydrocephalic valves. Surface treatment of GPC increases the adhesion of endothelic tissue on GPC and avoids the occurrence of thrombus in cardiac implant. In this work, ion beam was used to improve the mechanical characteristics of GPC surface. Hardness was measured as a function of depth in precursor and GPC samples heat treated from 300 to 2500 °C before and after bombardment with energetic ions of silicon, carbon, oxygen and gold at energies of 5, 6, 8 and 10 MeV and fluences between 1.0×1013 and 1.0×1016 ions/cm2. Comparison shows that hardness increases of the bombarded samples depend on heat treatment temperature. We verify that ion bombardment promotes carbonization due to an increased linkage between the chains of the polymeric material in lateral groups that are more numerous for samples heat treated to 700 °C.Department of Physics and Mathematics-FFCLRP-USPDepartment of Physics and Chemistry UNESPCenter for Irradiation of Materials Alabama AandM UniversityOak Ridge National Laboratory SMACDepartment of Physics and Chemistry UNESPUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Alabama AandM UniversitySMACRodrigues, M. G.Da Cruz, N. C. [UNESP]Rangel, E. C. [UNESP]Zimmerman, R. L.Ila, D.Poker, D. B.Hensley, D. K.2022-04-30T05:29:48Z2022-04-30T05:29:48Z2003-08-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1150-1153http://dx.doi.org/10.1063/1.1619912AIP Conference Proceedings, v. 680, p. 1150-1153.1551-76160094-243Xhttp://hdl.handle.net/11449/23270810.1063/1.16199122-s2.0-85041814537Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAIP Conference Proceedingsinfo:eu-repo/semantics/openAccess2022-04-30T05:29:48Zoai:repositorio.unesp.br:11449/232708Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:57:52.338013Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
title |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
spellingShingle |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications Rodrigues, M. G. |
title_short |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
title_full |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
title_fullStr |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
title_full_unstemmed |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
title_sort |
Ion Beam Optimized Mechanical Characteristics of Glassy Polymeric Carbon for Medical Applications |
author |
Rodrigues, M. G. |
author_facet |
Rodrigues, M. G. Da Cruz, N. C. [UNESP] Rangel, E. C. [UNESP] Zimmerman, R. L. Ila, D. Poker, D. B. Hensley, D. K. |
author_role |
author |
author2 |
Da Cruz, N. C. [UNESP] Rangel, E. C. [UNESP] Zimmerman, R. L. Ila, D. Poker, D. B. Hensley, D. K. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) Alabama AandM University SMAC |
dc.contributor.author.fl_str_mv |
Rodrigues, M. G. Da Cruz, N. C. [UNESP] Rangel, E. C. [UNESP] Zimmerman, R. L. Ila, D. Poker, D. B. Hensley, D. K. |
description |
Glassy Polymeric Carbon (GPC) has medical applications owing to its inertness and biocompatible characteristics. Commercial GPC prosthetics include mitral, aortic and hydrocephalic valves. Surface treatment of GPC increases the adhesion of endothelic tissue on GPC and avoids the occurrence of thrombus in cardiac implant. In this work, ion beam was used to improve the mechanical characteristics of GPC surface. Hardness was measured as a function of depth in precursor and GPC samples heat treated from 300 to 2500 °C before and after bombardment with energetic ions of silicon, carbon, oxygen and gold at energies of 5, 6, 8 and 10 MeV and fluences between 1.0×1013 and 1.0×1016 ions/cm2. Comparison shows that hardness increases of the bombarded samples depend on heat treatment temperature. We verify that ion bombardment promotes carbonization due to an increased linkage between the chains of the polymeric material in lateral groups that are more numerous for samples heat treated to 700 °C. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-08-26 2022-04-30T05:29:48Z 2022-04-30T05:29:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1063/1.1619912 AIP Conference Proceedings, v. 680, p. 1150-1153. 1551-7616 0094-243X http://hdl.handle.net/11449/232708 10.1063/1.1619912 2-s2.0-85041814537 |
url |
http://dx.doi.org/10.1063/1.1619912 http://hdl.handle.net/11449/232708 |
identifier_str_mv |
AIP Conference Proceedings, v. 680, p. 1150-1153. 1551-7616 0094-243X 10.1063/1.1619912 2-s2.0-85041814537 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
AIP Conference Proceedings |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1150-1153 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128295703674880 |