科研之友
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摘要
Polymer microparticles have been used in catalysis, sensing, environmental and biomedical applications. In this paper, the synthesis and characterization of amine functionalized polymer microparticles or aminoparticles via copolymerisation of glycidyl methacrylate and styrene monomers are reported. The surface of the microspheres was grafted with different amines - ethylenediamine, hexamethylenediamine, xylylenediamine and n-butylamine to increase the number and types of amino groups on the surface. The amine content on the microsphere surface was estimated and compared using elemental analyses and volumetric titration method. The fully characterized aminoparticles were used for the extraction of heavy metal ions and emerging pollutants such as gold and silver nanoparticles from aqueous solutions. The effect of contact time and concentrations of adsorbates on the extraction efficiency of pollutants, adsorption kinetics and isotherms were studied in detail. The extraction efficiencies of the synthesized particles were proportional to the surface amine content and surface charges of the particles. Such particles will be useful towards developing novel column materials for analytical separations.
- 出版日期2015
