Summary
Polymer composites have recently received a considerable amount of scientific and technological interest, because their properties can be properly controlled, choosing the adequate doped particles, their size and concentrations, and the synthesis conditions.
In this work we report the synthesis and characterization of a polystyrene (PS) matrix doped with different concentrations of iron nanoparticles.
X-ray diffraction and transmission electron microscopy were used to characterize the structure of the samples. The behaviour of the d.c. electrical conductivity (σdc) and the complex permittivity (ε*=ε′-iε′′) as a function of frequency (100 Hz–10 MHz) reflects the important effect of the iron nanoparticles concentration in the sample properties. A percolation threshold in the conductivity was observed at a critical concentration of iron nanoparticles. A noticeable increase in the saturation magnetization and coercivity is observed with the rise of the iron nanoparticles concentration, being thisbehaviour also noticed in the remanent magnetization. A rise of the initial a.c. susceptibility with the iron concentration is also observed.
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References
Park Y, Ha H, Kim JH (1997) Polymer Gels Networks 5(2): 153
An JH, Park JM, Kim JH (1999) Colloids Surfaces A: Physicochemical Engineering Aspects 153(1-3): 271
Williams G (1997) Keynote lectures in selected topics of polymer science. Madrid: CSIC
Mahajan D, Desai A, Rafailovich M, Cui MH, Yang NL (2006) Composites: part B 37: 74
Joo J, Epstein J (1994) Appl Phys Lett 65: 2278
Ku C, Liepins R (1997) Electrical properties of polymers. New York
Gangopadhyay R, De A, Goutam Ghosh G (2001) Synthetic Metals 123(1): 21
Burroughes J, Bradley D, Brown A, Marks R, Mackay K, Friend H, Burns P, Holmes A (1990) Nature 347: 539
Yue J, Epstein A (1992) J Chem Soc Chem Commun 21: 1540
Valente MA, Costa LC, Mendiratta SK, Henry F, Ramanitra L (1999) Solid State Commun 112: 67
Brosseau C, Boulic F, Queffelec P, Bourbigot C, Le Meste Y, Loaec J, Beroual A (1997) J Appl Phys 81(2): 882
Krupa I, Chodak I (2001) Eur Polym J 37(11): 2159
Costa LC, Valente M, Henry F, Ramanitra L (1998) J Chim Phys 95: 1453
Long Y, Chen Z, Duvail JL, Zhang Z, Wan M (2005) Physica B 370: 121
Guo Z, Henry LL, Palshin V, Podlaha EJ (2006) J Mater Chem 16: 1772
Khoroshilov A, Koroleva I, Bolodin Y (2000) Russ J Appl Chem 73(11): 1918
Flores EN, Omanovic S (2005) J Molecular Catalysis A: Chemical 242(1-2) : 182
Costa LC, Henry F, André A (1996) Proc Journées Polymères Conducteurs, Collonges la Rouge, France, April 1-5
Street G (1986) Handbook of Conducting polymers. Dekker, New York
Roichman Y, Silverstein M, Siegmann A, Narkis M (1999) J Macromol Sci Phys 38(1-2): 145
Stauffer D, Anthony A (1992) Introduction to Percolation Theory. Taylor and Francis, London
McGrum NG, Read B, Williams G (1967) Anelastic and dielectric effects in polymer solids. Wiley, New York
Costa LC, Henry F, Valente M, Mendiratta SK, Sombra AS (2002) Europ Polym J 38: 1495
Bigot J (1993) Ann Chem Fr 18: 369
Sr850 DSP Lock-In Amplifier Operating Manual and Programming Reference (1995). Stanford Research Systems, California
Davenport D (1981) Conductive polymers. Seymour Ed, New York
Prasad NS, Varma KBR (2005) J Non-Cryst Solids 351 : 1455
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Costa, L., Valente, M., Sá, M. et al. Electrical and magnetic properties of Polystyrene doped with Iron nanoparticles. Polym. Bull. 57, 881–887 (2006). https://doi.org/10.1007/s00289-006-0648-6
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DOI: https://doi.org/10.1007/s00289-006-0648-6