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Novel Bioactive Scaffolds Incorporating Nanogels as Potential Drug Eluting Devices

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Big advances are being achieved in the design of new implantable devices with enhanced properties. For example, synthetic porous three-dimensional structures can mimic the architecture of the tissues, and serve as templates for cell seeding. In addition, polymeric nanoparticles are able to provide a programmable and sustained local delivery of different types of biomolecules. In this study novel alternative scaffolds with controlled bioactive properties and architectures are presented. Two complementary approaches are described. Firstly, scaffolds with nanogels as active controlled release devices incorporated inside the three-dimensional structure are obtained using the thermally induced phase separation (TIPS) method. Secondly, a novel coating method using the spraying technique to load these nanometric crosslinked hydrogels on the surface of two-dimensional (2D) and three-dimensional (3D) biodegradable scaffolds is described. The scanning electron microscopy (SEM) images show the distribution of the nanogels on the surface of different substrates and also inside the porous structure of poly-α-hydroxy ester derivative foams. Both of them are compared in terms of manufacturability, dispersion and other processing variables.


Document Type: Research Article


Publication date: April 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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