“…As is well known, the free energy of hydrogen bond formation is about −25 kJ/mol, which is very close to the G 0 ads of the polymers, −22 kJ/mol. Moreover, if hydrophobic interaction is the major force for adsorption, then a value of −50 kJ/mol can be expected for G 0 ads [24], which is much greater than the calculated value. Therefore, the theoretical results further confirm the major role of hydrogen bonding rather than hydrophobic force in polysaccharide adsorption.…”