Influence of Magnetic Nanoparticles on PISA Preparation of Poly(Methacrylic Acid)‐b‐Poly(Methylmethacrylate) Nano‐Objects

Abstract

This article presents the synthesis of poly(methacrylic acid)-b-poly(methyl methacrylate) diblock copolymer via polymerization-induced self-assembly in the presence of iron-oxide nanoparticles. Detailed phase diagrams with and without inorganic nanoparticles were constructed. Scanning transmission electron microscopy and energy dispersive X-ray photometry studies confirme the decoration of the polymeric nanoparticles with the iron-oxide nanoparticles. These hybrid nanoparticles were used to prepare porous thin film membranes by spin coating. Finally, the magneto-responsive properties of the membranes were assessed using water filtration tests in the presence and absence of a magnetic field.

RAFT‐Mediated Polymerization‐Induced Self‐Assembly

“…Whereas most of the previous applications concern the individual nanoparticle itself or the bulk properties of a particle dispersion, other applications concern the films that can be produced after drying or processing the dispersions. For example, thin nanostructured films of PISA nanoparticles (pure polymer particles or hybrids) have been spin‐coated as thin films to construct membranes for water ultrafiltration purposes.…”

Polymerizations by RAFT: Developments of the Technique and Its Application in the Synthesis of Tailored (Co)polymers

“…The membranes prepared from these decorated nanoparticles were stable and displayed similar properties to membranes prepared from a mixture of iron‐oxide and polymer nanoparticles discussed previously. [ 253 ]…”

RAFT‐vermittelte polymerisationsinduzierte Selbstorganisation (PISA)

“…[125,126] Während sich die meisten der vorgenannten Anwendungen auf das einzelne Nanopartikel selbst oder die makroskopischen Eigenschaften einer Partikeldispersion beziehen, geht es bei anderen Anwendungen um die Filme,d ie durch Tr ocknung oder entsprechender Verarbeitung der Dispersionen hergestellt werden kçnnen. So wurden beispielsweise dünne, nanostrukturierte Filme aus PISA-Nanopartikeln (reine Polymerpartikel [284,285] oder Hybridpartikel [286] )m ittels Spin-Coating hergestellt, die als Membranen fürd ie Ultrafiltration von Wasser eingesetzt werden kçnnen.…”