Effect of solvent exchange on the stability of sterically functionalized magnetite nanoparticles in poly(methyl methacrylate) solutions and resulting spray dried composites

- PMMA-nanomagnetite composites can be synthesized via solution and spray drying method.
- Solvent exchange from dichloromethane to ethyl acetate is necessary and introduced to the process.
- Solvent exchange from dichloromethane to ethyl acetate does not influence the colloidal stability of the nanoparticle suspension.
- The non-adsorbing dissolved polymer PMMA causes destabilization of the nanoparticles regardless of the solvent.
- The spray-dried particles possess different morphologies depending on the solvent.