Synthesis of magnetic Fe₃O₄/polyamine hybrid microsphere using O/W/O Pickering emulsion droplet as the polymerization micro-reactor

Abstract

An O/W/O emulsion containing Fe3O4NPs and PEI was obtained using SM-CaCO3NPs as the stabilizer. In a droplet-to-droplet reaction mode, a magnetic polyamine microsphere was achieved by crosslinking PEI in the emulsion droplet with glutaraldehyde.

Nanostructured biogel templated synthesis of Fe3O4 nanoparticles and its application for catalytic degradation of xylenol orange

“…alumina, silica and activated carbon) and macromolecular microspheres are commonly employed as the templates for the formation of Fe 3 O 4 nanoparticles. [17][18][19][20] In addition, surfactants, capping agents, and chelating agents are also widely applied to increase the stability and activity. [21][22][23] Hydrogels are three-dimensional polymeric networks containing a large portion of water.…”

Nanoclay stabilized Pickering miniemulsion of fluorinated copolymer with improved hydrophobicity via RAFT polymerization

“…In this case the solid particles should be wetted by both monomer and solvent. 4,5 There are reports to use nanosilica, 6,7 CaCO 3 nanoparticles, 8 magnetic Fe 2 O 3 and Fe 3 O 4 nanoparticles, 9,10 graphene-oxide, 11,12 cellulose nanobrils, 13 starch nanocrystals 14 as Pickering stabilizers. In this regard, nanoclays were widely used because of their availability, ease of modication, thermal and mechanical stability, precise dimension (length $ 25-150 nm, thickness $ 1 nm) etc.…”

Fabrication of pH‐sensitive poly(2‐(diethylamino)ethyl methacrylate)/palygorskite composite microspheres via Pickering emulsion polymerization and their release behavior

“…Wang et al . obtained a magnetic Fe 3 O 4 /polyamine hybrid microsphere using O / W / O Pickering emulsion droplet as the polymerization microreactor …”