TY - JOUR
T1 - Synthesis and characterization of polystyrene coated iron oxide nanoparticles and asymmetric assemblies by phase inversion
AU - Xie, Yihui
AU - Sougrat, Rachid
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/9/2
Y1 - 2014/9/2
N2 - Films with a gradient concentration of magnetic iron oxide nanoparticles are reported, based on a phase inversion membrane process. Nanoparticles with ∼13 nm diameter were prepared by coprecipitation in aqueous solution and stabilized by oleic acid. They were further functionalized by ATRP leading to grafted polystyrene brush. The final nanoparticles of 33 nm diameter were characterized by TGA, FTIR spectroscopy, GPC, transmission electron microscopy, and dynanmic light scattering. Asymmetric porous nanoparticle assemblies were then prepared by solution casting and immersion in water. The nanocomposite film production with functionalized nanoparticles is fast and technically scalable. The morphologies of films were characterized by scanning electron microscopy and atomic force microscopy, demonstrating the presence of sponge-like structures and finger-like cavities when 50 and 13 wt % casting solutions were, respectively, used. The magnetic properties were evaluated using vibrating sample magnetometer.
AB - Films with a gradient concentration of magnetic iron oxide nanoparticles are reported, based on a phase inversion membrane process. Nanoparticles with ∼13 nm diameter were prepared by coprecipitation in aqueous solution and stabilized by oleic acid. They were further functionalized by ATRP leading to grafted polystyrene brush. The final nanoparticles of 33 nm diameter were characterized by TGA, FTIR spectroscopy, GPC, transmission electron microscopy, and dynanmic light scattering. Asymmetric porous nanoparticle assemblies were then prepared by solution casting and immersion in water. The nanocomposite film production with functionalized nanoparticles is fast and technically scalable. The morphologies of films were characterized by scanning electron microscopy and atomic force microscopy, demonstrating the presence of sponge-like structures and finger-like cavities when 50 and 13 wt % casting solutions were, respectively, used. The magnetic properties were evaluated using vibrating sample magnetometer.
UR - http://hdl.handle.net/10754/563749
UR - http://doi.wiley.com/10.1002/app.41368
UR - http://www.scopus.com/inward/record.url?scp=85027916851&partnerID=8YFLogxK
U2 - 10.1002/app.41368
DO - 10.1002/app.41368
M3 - Article
SN - 0021-8995
VL - 132
SP - n/a-n/a
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 5
ER -