TY - GEN
T1 - Formation of bone-like apatite on polymeric surfaces modified with -SO 3H groups
AU - Leonor, I. B.
AU - Kim, H. M.
AU - Balas, F.
AU - Kawashita, M.
AU - Reis, R. L.
AU - Kokubo, T.
AU - Nakamura, T.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
KW - Apatite
KW - Bioactivity
KW - Polymer
KW - Simulated body fluid (SBF)
KW - Sulfonic groups (-SOh)
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=37849033757&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37849033757&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.514-516.966
DO - 10.4028/www.scientific.net/MSF.514-516.966
M3 - Conference contribution
AN - SCOPUS:37849033757
SN - 9780878494026
T3 - Materials Science Forum
SP - 966
EP - 969
BT - Fast Software Encryption - 14th International Workshop, FSE 2007, Revised Selected Papers
PB - Trans Tech Publications Ltd
T2 - 3rd International Materials Symposium and 12th Portuguese Materials Society Meeting 2005
Y2 - 20 March 2005 through 23 March 2005
ER -