AbstractMeasurements of relaxation times,T1andT2, and self‐diffusion coefficients,D, for small molecules, viz., H2O, dioxane andt‐butanol, in the gel system cellulose/H2O are reported and compared with those for H2O in a polyacrylamide gel of the same polymer content. The temperature dependence ofT1andDcan for all the penetrants be represented by Arrhenius type relations which merely are parallel shifts by the same amount, towards smaller values, of those obtained without polymer. TheT2values for H2O in both gels pass through a shallow minimum over the considered temperature interval (14°−44°C). Furthermore, relaxation timesT1of D2O in the gel system cellulose/D2O are reported; in a plot of lnT1vs. 1/T, a plateau region is observed at higher tempe
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