A study on the grafting reaction of isocyanates with hydroxyapatite particles

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Liu, Q. and Wijn, J.R. de and Blitterswijk, C.A. van (1998) A study on the grafting reaction of isocyanates with hydroxyapatite particles. Journal of Biomedical Materials Research, 40 (3). pp. 358-364. ISSN 1549-3296

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Abstract:The surface grafting reactions of a series of isocyanates with hydroxyapatite particles at different temperatures were studied by Infrared spectrophotometry (IR) and thermal gravimetric analysis (TGA). The study results show that both hexamethylene diisocyanate (HMDI) and isocyanatoethyl methacrylate (ICEM) react readily with HA while ethyl isocyanate acetate (EIA) and butyl isocyanate (BIC) have lower reactivity towards HA particles. It also has been found that the reaction of ICEM with HA follows a second-order reaction mechanism, despite the heterogeneous nature of the reaction, while the reaction of HMDI with HA does not due to the complexity of the reaction. Based on this study, it is concluded that ICEM and HMDI are suitable agents for the coupling of polymers due to their reactivity towards HA.
Item Type:Article
Copyright:© 1998 Wiley InterScience
Faculty:
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/71470
Official URL:http://dx.doi.org/10.1002/(SICI)1097-4636(19980605)40:3<358::AID-JBM3>3.0.CO;2-E
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