Abstract
This paper covers the targetable magnetic iron oxide core and biodegradable, cost-effective, eco-friendly polymer shell considering their versatile and extensive use in various fields. In this work, poly (acrylic acid–co-2-hydroxyethylmethacrylate) [P (AA-co-HEMA)] magnetic composite polymer particles were synthesized by the method of two-stage solution polymerization in aqueous media. At first synthesis, the Fe3O4 particles by a traditional co-precipitation method and in the second stage occurs the formation of the polymer using acrylic acid (AA) as monomer and 2-hydroxyethyl methacrylate (HEMA) as co-monomer. Finally, the synthesized iron oxide particles encapsulated by a polymer to modify the surface of composite particles. The modified composite particles were then characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffractometry (XRD), Dynamic Light Scattering (DLS), Thermo Gravimetric Analysis (TGA) and Vibrating Sample Magnetometry (VSM). The existence of carboxyl (-COOH) & hydroxyl (-OH) groups in the composite particles was confirmed by FTIR. XRD indicated the crystalline cubic spinel structure of magnetic composite particles. VSM results showed that the synthesized coated composite particles were paramagnetic in nature magnetic saturation is obtained 72.72 emu/g and 97.9 emu/g for bare Fe3O4 and coated magnetic composite particles respectively.
Highlights
Polymer microspheres are attracted much attention by the researchers because of their wide applications in biotechnology, paints and ink formulation, textile industry, electronics, and chromatography
Synthesis and characterization of bi-functional PAA-hydroxyethyl methacrylate (HEMA) coated Fe3O4 magnetic composite particles were prepared with the aim of enhancing the surface modification of Fe3O4
The produced magnetite particles were coated with a bi-functional polymer polyacrylic acid (AA) and 2-hydroxyethyl-methacrylate (HEMA) prepared by solution polymerization
Summary
Polymer microspheres are attracted much attention by the researchers because of their wide applications in biotechnology, paints and ink formulation, textile industry, electronics, and chromatography. These applications are attributed to their easy preparation [1, 2], clean and large specific surface area. The fabrication of hybrid inorganic/organic polymer composites offers advantages especially when those applications depend on mechanical and surface properties These inorganic-organic hybrid polymer particles find wide application potentials in catalysis, electrical, optical and electronic or photonic devices, biomaterials, flameretardant and coatings [12,13,14,15,16,17,18,19,20]. There is an increasing interest in the synthesis of nano-sized metal oxides
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