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Title: Polyethylenimine-immobilized core-shell nanoparticles: Synthesis, characterization, and biocompatibility test
Authors: Montri Ratanajanchai
Sunhapas Soodvilai
Nuttaporn Pimpha
Panya Sunintaboon
Mahidol University
Thailand National Science and Technology Development Agency
Center of Excellent for Innovation in Chemistry (PERCH-CIC)
Keywords: Engineering;Materials Science;Medicine;Physics and Astronomy
Issue Date: 1-Jan-2014
Citation: Materials Science and Engineering C. Vol.34, No.1 (2014), 377-383
Abstract: Herein, we prepared PEI-immobilized core-shell particles possessing various types of polymer cores via a visible light-induced surfactant-free emulsion polymerization (SFEP) of three vinyl monomers: styrene (St), methyl methacrylate (MMA), and 2-hydroxyethyl methacrylate (HEMA). An effect of monomers on the polymerization and characteristics of resulting products was investigated. Monomers with high polarity can provide high monomer conversion, high percentage of grafted PEI, stable particles with uniform size distribution but less amino groups per particles. All prepared nanoparticles exhibited a core-shell nanostructure, containing PEI on the shell with hydrodynamic size around 140-230 nm. For in-vitro study in Caco-2 cells, we found that the incorporation of PEI into these core-shell nanoparticles can significantly reduce its cytotoxic effect and also be able to internalized within the cells. Accordingly, these biocompatible particles would be useful for various biomedical applications, including gene transfection and intracellular drug delivery. © 2013 Elsevier B.V.
ISSN: 09284931
Appears in Collections:Scopus 2011-2015

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