64. Characterization of Microphase Separation Structure of Swollen Coal by Means of Pulsed ^1H-NMR Technique

Abstract

Phase separated structure of solvent swollen coal was characterized thorough its property, of proton flip-flop spin diffusion. It is shown that the fashion of coal swelling is non-uniform in the segment scale and a microscopic phase separation does take place in a scale from several to 20nm even in good solvents like pyridine.