Polydopamine functionalized hydrogel beads as magnetically separable antibacterial materials.

ABSTRACT: In the present study, magnetically separable hydrogel beads of ionically cross-linked alginate were functionalized with polydopamine (PDA). The rationale behind this was to enhance the structural stability and antibacterial profile of PDA/Alg/Fe₃O₄ beads (K3). Incorporation of superparamagnetic magnetite (Fe₃O₄) nanoparticles endowed the hydrogel beads with magnetism. X-ray diffraction (XRD) analysis revealed the successful formation of pure Alg/Fe₃O₄ nanoparticles having an inverse spinel structure. Vibrating sample magnetometry (VSM) confirmed their superparamagnetic behaviour with M _s values of 36.18 and 30.46 emu g^-1 at 5 and 300 K, respectively. High resolution-transmission electron microsco

SUBMITTER: Matai I 

PROVIDER: S-EPMC9063863 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature