Free nuclear induction in amorphous polymers and viscous liquids above the glass temperature

Abstract

An experimental and theoretical study has been made of the temperature dependence of the form of the free induction signal (FIS) using PS and a low molecular viscous liquid, dioctylphthalate, as examples. A relationship for the form of the FIS is obtained on the basis of a hypothesis about the existence, in any viscous system, of random magnetic fields which, over a wide temperature range, are not averaged to zero by movement. © 1978.