Particle dispersibility and giant reduction in dynamic modulus of magnetic gels containing barium ferrite and iron oxide particles.
作者： Tetsu Mitsumata , Takashi Wakabayashi , Takahiko Okazaki
DOI: 10.1021/JP805955J
关键词: Magnetostriction 、 Iron oxide 、 Dynamic modulus 、 Barium ferrite 、 Magnetization 、 Nuclear magnetic resonance 、 Composite material 、 Dynamic mechanical analysis 、 Materials science 、 Remanence 、 Magnetic nanoparticles
摘要: The particle dispersibility of barium ferrite and iron oxide magnetic particles in carrageenan gels was investigated, the influence on giant reduction dynamic modulus discussed. containing demonstrated reductions storage Young's order 10 (5) Pa due to magnetization; however, small less than (4) were observed for oxide. with did not follow Krieger-Dougherty equation above volume fractions 0.06, indicating heterogeneous dispersion particles; satisfied at all fractions, suggesting random particles. It noted that enhanced nonlinear viscoelasticity a large value loss tangent, while exhibited weak tangent. Magnetic measurements indicated high values remanent magnetization low After 1 T, became elongated parallel field shrunk perpendicular field. In contrast, undergo marked deformation. These results strongly indicate requires both magnetostriction which originate from dispersibility. relationship between is discussed using rheological morphological data.
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sci-hub.se 参考文章(15)
Tohru Shiga, Akane Okada, Toshio Kurauchi, Magnetroviscoelastic behavior of composite gels Journal of Applied Polymer Science. ,vol. 58, pp. 787- 792 ,(1995) , 10.1002/APP.1995.070580411
Tetsu Mitsumata, Takahiko Okazaki, Magnetization-Induced Reduction in Dynamic Modulus of Polyurethane Elastomers Loaded with Ferrite Japanese Journal of Applied Physics. ,vol. 46, pp. 4220- 4224 ,(2007) , 10.1143/JJAP.46.4220
Irvin M. Krieger, Thomas J. Dougherty, A Mechanism for Non‐Newtonian Flow in Suspensions of Rigid Spheres Journal of Rheology. ,vol. 3, pp. 137- 152 ,(1959) , 10.1122/1.548848
M Lokander, B Stenberg, Improving the magnetorheological effect in isotropic magnetorheological rubber materials Polymer Testing. ,vol. 22, pp. 677- 680 ,(2003) , 10.1016/S0142-9418(02)00175-7
G. BOSSIS, O. VOLKOVA, S. LACIS, M. GUYOT, Magnetorheology of a Millimetric Steel Spheres Suspension International Journal of Modern Physics B. ,vol. 16, pp. 2758- 2764 ,(2002) , 10.1142/S0217979202012955
George Y. Onoda, Eric G. Liniger, Random loose packings of uniform spheres and the dilatancy onset Physical Review Letters. ,vol. 64, pp. 2727- 2730 ,(1990) , 10.1103/PHYSREVLETT.64.2727
Mark R. Jolly, J. David Carlson, Beth C. Muñoz, Todd A. Bullions, The Magnetoviscoelastic Response of Elastomer Composites Consisting of Ferrous Particles Embedded in a Polymer Matrix Journal of Intelligent Material Systems and Structures. ,vol. 7, pp. 613- 622 ,(1996) , 10.1177/1045389X9600700601
Zsolt Varga, Genovéva Filipcsei, Miklós Zrínyi, Magnetic field sensitive functional elastomers with tuneable elastic modulus Polymer. ,vol. 47, pp. 227- 233 ,(2006) , 10.1016/J.POLYMER.2005.10.139
A. R. Payne, A note on the existence of a yield point in the dynamic modulus of loaded vulcanizates Journal of Applied Polymer Science. ,vol. 3, pp. 127- 127 ,(1960) , 10.1002/APP.1960.070030721
Tetsu Mitsumata, Kazuki Sakai, Jun-ichi Takimoto, Giant Reduction in Dynamic Modulus of κ-Carrageenan Magnetic Gels Journal of Physical Chemistry B. ,vol. 110, pp. 20217- 20223 ,(2006) , 10.1021/JP063494G