Bonelike/PLGA hybrid materials for bone regeneration : preparation route and physicochemical characterisation

Bonelike R /PLGA hybrid materials have been developed using γ -MPS as silane-coupling agent between the inorganic and organic phases for controlled drug delivery applications. Silanization showed to be more effective when cyclohexane was used as a non-polar solvent (nP method) due to a chemical inte...

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Bibliographic Details
Main Author: Oliveira, Joaquim M. (author)
Other Authors: Miyazaki, T. (author), Lopes, M. A. (author), Ohtsuki, C. (author), Santos, J. D. (author)
Format: article
Language:eng
Published: 2005
Online Access:http://hdl.handle.net/1822/14067
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/14067
Description
Summary:Bonelike R /PLGA hybrid materials have been developed using γ -MPS as silane-coupling agent between the inorganic and organic phases for controlled drug delivery applications. Silanization showed to be more effective when cyclohexane was used as a non-polar solvent (nP method) due to a chemical interaction between Bonelike R and the silane film, while by using a 95/5 (V/V) methanol/water as a polar solvent (P method), a much thinner film was achieved. Functional groups of PLGA, such as the carbonyl group (C O), were identified using Raman and FTIR-ATR analysis and therefore these groups may be used to link therapeutic molecules. These novel hybrid materials prepared by combining silanization and post-hybridisation processes are expected to find use in medical applications of bone regeneration and as drug delivery carrier for therapeutic molecules.