Abstract
This paper describes nuclear magnetic resonance experiments used to detect the occurrence of a diffuse freezing of some of the water sorbed by wool keratin and to estimate the saturation water content of the system. The data are interpreted using a distribution of molecular correlation times model. It is assumed that on cooling, it is the short correlation time molecules which freeze, while molecules at the long correlation time end of the distribution gradually undergo an “apparent phase transition” Resing, H. A., J. Chem. Phys. 43, 669 (1965). The effect of these truncations of the distribution on the observed proton magnetic resonance is discussed.
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