화학공학소재연구정보센터
Macromolecular Rapid Communications, Vol.23, No.3, 175-178, 2002
Anisotropy in longitudinal modulus of polymer gels containing ferrite
The effects of magnetization direction on the longitudinal modulus of magnetic gels, which consist of magnetized barium ferrite and poly(vinyl alcohol), have been investigated using 10 MHz ultrasonic waves. The modulus change due to magnetization depends on both the crosslinking density and magnetization direction. The modulus change increased and decreased when the strain direction was perpendicular and parallel to magnetization, respectively.