Abstract
AbstractStudies on the self‐assembly of core–shell magnetic nanospheres under or without an external magnetic field are the subject of intense research. It is believed that after being coated by organic molecules, the magnetic nanoparticles can still have chance to form chain‐like structure driven by the dipole–dipole interactions while the coated shell minimizes the effect of Van der Waals attractions. However, still there are no direct experimental observations for polymer‐modified magnetic colloids sized hundreds of nanometers. In this article, PEG‐ and PSt‐coated Fe2O3 nanospheres were synthesized and their self‐assembly behaviors were studied. MFM and TEM measurements reveal that the prepared spheres owning a core–shell structure. Under zero magnetic field, a direct observation of chain‐like structure was achieved for the PEG‐coated magnetic colloids. For the PSt‐modified magnetic spheres, there formed a 2D aligned stripes pattern at the surface of mica when the suspending of sample was dried under an external magnetic field. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 4211–4215, 2006
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
