The intrinsic viscosity, [n], of xanthan in 1 × 10−1mol/L NaClsolution at 25◦C was determined as being 13.99 dL/g (Table 1) byusing Rao method [38] which will be discussed in Section 3.1.Inorganic monovalent salts (NaCl and KCl) purchased fromSigma-Aldrich were used as-received.