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Ultra Small Angle X-Ray Scattering Characterization of Temperature-Sensitive Ferrogels Prepared Using Magnetic Nanoparticles

Published online by Cambridge University Press:  06 November 2013

Kamlesh J. Suthar ,
Muralidhar K. Ghantasala ,
Derrick C. Mancini  and
Jan Ilavsky
Kamlesh J. Suthar
Affiliation:
Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL – 60439
Muralidhar K. Ghantasala
Affiliation:
Department of Mechanical and Aeronautical Engineering, Western Michigan University, 1903, West Michigan Avenue, Kalamazoo, MI – 49008
Derrick C. Mancini
Affiliation:
Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL – 60439
Jan Ilavsky
Affiliation:
Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL – 60439
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Abstract

Temperature-sensitive ferrogel prepared using Fe3O4 nanoparticles are characterized under varying temperature conditions. The nanoparticles were distributed in Nisopropylacrylamide (NIPAm) during their polymerization to form hydrogel. Particle distribution and agglomeration characteristics of the prepared ferrogels were investigated using ultra small angle x-ray scattering (USAXS) at various temperatures through the Lower Critical Solution Temperature (LCST). Transmission electron microscopy (TEM) was used to estimate the particle size distribution. The magnetic property was investigated using direct current superconducting quantum interference device (DC-SQUID) under hydrated conditions. The USAXS analysis showed an increase in the volume of particles without changing the agglomeration characteristics as the temperature is increased during the measurements. The ferrogel did not show any sedimentation or particle detachment from the gel under thermal cycling. Details of our results and analysis are presented.

Keywords

nanoscalepolymerneutron scattering
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1453: Symposium GG – Functional Hybrid Nanoparticles and Capsules with Engineered Structures and Properties , 2012 , mrss12-1453-gg09-06
Copyright
Copyright © Materials Research Society 2013 

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References

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