Interaction of cellulose with liquid water: Accessibility determined from thermal expansion

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Abstract
The apparent specific volumes in water of glucose and of three different types of cellulose were measured at 3° intervals between −5 and 25°C. The extent of the destructuring of the liquid water by the carbohydrate surface was determined from the thermal expansion near 0°C. If glucose in aqueous solution was taken to be 100% accessible, the accessibilities of cellophane, wood pulp and cotton linters ranked 50, 29 and 20 per cent respectively. These values are considerably lower than accessibilities measured by isotope exchange techniques. Possible reasons for this discrepancy are discussed.