Ionic liquid mediated synthesis of silica/polystyrene core-shell composite nanospheres by radical dispersion polymerization
- Ionic liquid mediated synthesis of silica/polystyrene core-shell composite nanospheres by radical dispersion polymerization
- 심재진; 할도리유바라즈; 류원석; 노석균
- SUPERCRITICAL CARBON-DIOXIDE; INORGANIC PARTICLES; BUTYL ACRYLATE; NANOCOMPOSITE PARTICLES; SILICA PARTICLES; POLAR MEDIA; POLYSTYRENE; STYRENE; ENCAPSULATION; MICROSPHERES
- Issue Date
- ELSEVIER SCIENCE BV
- REACTIVE & FUNCTIONAL POLYMERS, v.70, no.7, pp.393 - 399
- This report describes the novel preparation of silica/polystyrene (SiO2/PS) core-shell composite nanospheres by in situ radical dispersion polymerization in an ionic liquid (IL). Silica nanoparticles were first surface modified by the silane coupling agent methacryloxypropyltrimethoxysilane (MPTMS), which is capable of copolymerizing with styrene and provided a reactive C=C bond. Transmission electron microscopy (TEM) revealed core-shell morphology with smooth surfaces. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that almost all of the SiO2 nanoparticles were encapsulated by the polymer. The composite particles were also analyzed by FT-IR spectroscopy and thermogravimetric analysis (TGA). In principle, this simple and environmentally-friendly synthetic procedure can be employed to prepare other inorganic oxide-containing polymer composites. (C) 2010 Elsevier Ltd. All rights reserved.
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