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The apparent diffusion coefficient for short chain alcohols in undercooled maltose–water mixtures close to the calorimetric glass transition temperature, T g , was measured by following desorption using headspace gas chromatography. The plasticising effect of the alcohols on T g was characterised using differential scanning calorimetry. The initial appearance of alcohol in the headspace...
The dielectric relaxation behaviour of several amorphous low molecular weight carbohydrates and their 10% w/w water mixtures has been studied in the supercooled liquid and glassy regions in the frequency range 100 Hz to 100 kHz. The dry carbohydrates show a primary α-relaxation (activation energy 250-405 kJ mol -1 ) at temperatures above the calorimetric glass transition temperature,...
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