Abstract
A theoretical account of solvent effects on the unperturbed dimensions is given for two representative polysaccharides, amylose and cellulose. A solvation energy term is calculated for each conformational state by evaluating the contributions of cavity formation and of the interaction between solvent and solute. A significant change in the profiles of conformational surfaces is found in the three solvents considered (water, dioxane and dimethylsulphoxide). As a straightforward consequence, unperturbed chain dimensions are predicted to be solvent-dependent, as already found experimentally for the two polysaccharides considered, as well as for other polar polymers.
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