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Abstract
Observations were made of the free-precessional decay signals obtained from pulsed proton-magnetic-resonance experiments performed on the wool–water system. The signals were found to consist of two easily separable components; a fast-decaying component, independent of regain, attributed to the protons of the keratin, and a variable, slower-decaying, component, attributed to the protons of the absorbed water. Attempts were made to analyse the results in terms of various wool–water models. Qualitative agreement was obtained between the experimental results and the five-phase theory of Feughelman and Haly7.