At a charged interface if LDW accumulates solute then it will relax back to normal density, as will the associated HDW . Structure making salts concentrate in less structured aqueous phase and decrease the compatibility between hydrophilic polymers, whilst structure breaking salts concentrate in more structured environments and increase such compatibility. Formation of junction zones leads to the formation of compartments where the clustering of water reduces efflux. Hydrophobic surfaces are particularly sequestered away if near charged groups' HDW -generated' LDW . If more LDW is present then water self-diffusion will decreases but viscosity and shear thinning will increase.
Polymers are almost impenetrable to other polymers due to structured hydration.
If the molecules have the same hydration characteristics, the structures may form junction zones, so 'combining' the hydration layers. If they do not then the inability to form junction zones may cause phase separation. Non-polar molecules increase the structural organization of water by means of hydrophobic hydration. Low-density weakly bound water associated with the dense water. Low-density weakly bound water associated with hydrophobic groups.