Structural orientation and electric polarization of polymers in stationary magnetic fields

Magnetic fields (MFs) of 100 to 500 kA/m were found to order magnetoanisotropic structural units in nonpolar polymer melts, e.g., polyethylene (PE). A temperature range and a threshold intensity of MF were observed when PE melt was partially ordered, i.e., when it was in a quasi-liquid-crystalline s...

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Bibliographic Details
Published in[1991 Proceedings] 7th International Symposium on Electrets (ISE 7) pp. 316 - 321
Main Authors Goldade, V.A., Pinchuk, L.S., Snezhkov, V.V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1991
Subjects
Amorphous magnetic materials
Crystallization
Magnetic analysis
Magnetic anisotropy
Magnetic fields
Magnetic materials
Magnetic susceptibility
Perpendicular magnetic anisotropy
Polarization
Polymers
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Summary:Magnetic fields (MFs) of 100 to 500 kA/m were found to order magnetoanisotropic structural units in nonpolar polymer melts, e.g., polyethylene (PE). A temperature range and a threshold intensity of MF were observed when PE melt was partially ordered, i.e., when it was in a quasi-liquid-crystalline state. It is believed that thermomagnetic treatment of polymers in MFs can result in electrical polarization and formation of magnetoelectrets. A relationship is believed to exist between the polarization processes and the orientation of magnetoanisotropic macromolecules and aggregates in MFs.< >
ISBN:9780780301122
0780301129
DOI:10.1109/ISE.1991.167229