Interaction between xanthan gum and cationic cellulose JR400 in aqueous solution

► Electrostatic and hydrogen bonding interactions between xanthan gum and cationic cellulose JR400 are firstly confirmed. ► Viscosity of xanthan gum/JR400 mixture can be enhanced after mixing. ► Average molecular weight of mixture is higher than that of reported oppositely charge polyelectrolyte mixtures.