Facile synthesis, characterization of various polymer immobilized on magnetite nanoparticles applying the coprecipitation method

Abstract

In this study, systematic examination of the effect of different polymer types (functional groups) on the one-step synthesis of polymer immobilized magnetite nanoparticle via the modified coprecipitation method was carried out. By using five different polymers with different functional groups of polyacrylic acid (PAA), polyacrylamide (PAM), polyethylene glycol (PEG), polyethylene imine (PEI), and polyvinyl alcohol (PVA), the effect of the polymer difference on magnetite nanoparticle formation, polymer immobilization, composite particle size, zeta potential and magnetic properties of the resulting composite were measured in detail. The results show that the immobilized polymer yield varied significantly depending on the type of polymer used and their order was as follows; PEG < PEI < PAM < PAA < PVA. Despite the simple method, PVA/MNP achieved high immobilized polymer amount of 0.2 g/(g-Fe 3 O 4 ), which was about 1.8 times larger than that prepared by a conventional method. Furthermore, the different zeta potentials and hydrodynamic diameter corresponding to each functional group of the immobilized polymer were observed. The results of the vibrating sample magnetometer (VSM) measurement confirmed that all the polymer/MNP composites showed a superparamagnetic behavior. These results showed that the proposed method is very simple, facile, and applicable to various polymers to synthesize polymer immobilized on magnetite nanoparticle.

Adsorption and photocatalytic degradation of tetracycline from water by kappa‐carrageenan and iron oxide nanoparticle‐filled poly (acrylonitrile‐co‐N‐vinyl pyrrolidone) composite gel

“…[26] KC has been reported to control the co-precipitation of Fe(III)/Fe(II) salt in aqueous medium and enable the formation of FeNPs. [27] KC also strongly promotes photocatalytic degradation because of the presence of sulfonic functionality in its structure. [26] Thus, in the present work, these KC and FeNP-loaded poly(ANco-NVP) copolymer nanocomposite gels were synthesized and used for column adsorption and catalytic degradation of TCs.…”

Dual-Stimuli-Sensitive Smart Hydrogels Containing Magnetic Nanoparticles as Antitumor Local Drug Delivery Systems—Synthesis and Characterization

“…The other PEG characteristic bands at 1470 cm −1 and 1280 cm −1 are attributed to -CH 2 bending. The 950 cm −1 band results from out-of-plane -CH bending [ 49 , 50 , 57 ].…”

“…The synthesis procedure of the hydrogel with preferable properties was denoted based on the collected data. The coprecipitation method was used to obtain MIONs [ 47 , 48 , 49 , 50 ], which were thoroughly studied using transmission electron microscope (TEM) and dynamic light scattering (DLS) measurements; optimal synthesis and coating conditions were also defined. The magnetic properties of the nanoparticles were assessed using a vibrating sample magnetometer (VSM), as well as their ability to induce hyperthermia.…”

Magnetite-Based Biosensors and Molecular Logic Gates: From Magnetite Synthesis to Application

“…Polymers are utilized in various biomedical applications because of their biomimetic properties and multi-functionality and are widely used for the coverage of MNPs [ 74 , 75 ]. Most polymers have various reactive groups in their structures, such as hydroxyl-, carboxyl-, and amino-groups, which could be used for the further bioconjugation of macromolecules [ 76 ]. Polymers could be chemically (covalent bonds) or physically (Van der Waals interaction) bound to the surface of synthesized MNPs.…”