MAGNETROVISCOELASTIC BEHAVIOR OF COMPOSITE GELS

Dynamic viscoelasticity of silicone gels having many lines of disperse d iron particles under the influence of external magnetic fields was s tudied. The particulate composite enhanced its elastic modulus by acti on of magnetic fields. The magnetroviscoelastic behavior was caused by the cohesive forces between magnetically polarized particles and was analyzed using a simple model of induced dipole-induced dipole interac tions. The presented results provide insight into the relationship bet ween macroscopic viscoelastic behavior of the composite gels and the m icroscopic bondings between dispersed particles. (C) 1995 John Wiley & Sons, Inc.