Supercritical fluid mediated synthesis of poly(2-hydroxyethyl methacrylate)/Fe3O4 hybrid nanocomposite
作者： Van Hoa Nguyen , Yuvaraj Haldorai , Quang Long Pham , Jae-Jin Shim , None
DOI: 10.1016/J.MSEB.2011.02.020
关键词: Nanoparticle 、 Polymer chemistry 、 Polymer 、 Methacrylate 、 Supercritical carbon dioxide 、 Nanocomposite 、 Dispersion polymerization 、 Materials science 、 Supercritical fluid 、 Thermal stability
摘要: Poly(2-hydroxyethyl methacrylate) (PHEMA) and magnetic nanoparticle (Fe3O4) hybrid nanocomposite was synthesized by dispersion polymerization in supercritical carbon dioxide (scCO2) using a copolymeric stabilizer, poly[(2-dimethylamino)ethyl methacrylate-co-1H,1H-perfluorooctyl methacrylate] (PDMAEMA-co-PFOMA). Fe3O4 nanoparticles were first surface-modified with silane coupling agent methacryloxypropyltrimethoxysilane (MPTMS), which provides reactive CC bond can copolymerize 2-hydroxyethyl methacrylate (HEMA). After immobilization of the agent, polymer chains successfully grafted onto surface Fe3O4, resulting formation core–shell nanostructure. FE-TEM pictures showed that well dispersed matrix. The incorporation confirmed FT-IR, XRD XPS. Thermal stability property increase increasing amount composite. This new environmentally benign green synthetic route may offer advantages easy separation solvent removal.
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