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https://hdl.handle.net/1822/18311
Título: | Formation of bone-like apatite on polymeric surfaces modified with -SO3H groups |
Autor(es): | Leonor, I. B. Kim, H-M Balas, F. Kawashita, M. Reis, R. L. Kokubo, T. Nakamura, T. |
Palavras-chave: | Polymer Sulfonic groups (-SO3H) Surface modification Apatite Simulated body fluid (SBF) Bioactivity Sulfonic groups (-SO h) 3 |
Data: | 2006 |
Editora: | Trans Tech Publications |
Revista: | Materials Science Forum |
Resumo(s): | Sulfonic groups (-SO3H) were covalently attached on different polymeric surfaces enabling them to induce apatite nucleation, for developing bioactive apatite-polymer composites with a bonelike 3-dimensional structure. High molecular weight polyethylene (HMWPE) and ethylene-co-vinyl alcohol co-polymer (EVOH) were used. The polymers were soaked in two types of sulphate-containing solutions with different concentrations, sulphuric acid (H2SO4) and chlorosulfonic acid (ClSO3H). To incorporate calcium ions into to the sulfonated polymers, the samples were soaked in a saturated Ca(OH)2 solution for 24 hours. After soaking of the samples in a simulated body fluid (SBF), formation of an apatite layer on both surfaces was observed. The results obtained prove the validity of the proposed concept and show that the -SO3H groups are effective on inducing apatite nucleation on the surface of these polymers. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/18311 |
ISBN: | 978-0-87849-402-6 |
ISSN: | 0255-5476 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
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