图为油相溶液粘度随乙基纤维素添加量的变化。从图中可知，随着乙基纤维素添加量的增加，所得溶液的粘度也随之增加。而提高油相溶液的粘度则会增大油相液滴与水相的界面的刚性，这就非常有利于油相液滴在高速剪切下保持较大的液滴尺寸而不被剪切破坏。通过观察上述三种不同乙基纤维素添加量所得油相溶液乳化后所得乳液的形貌可更加直观地观察到由油相溶液粘度的增加带来的影响。

The figure shows the change of viscosity of oil phase solution with the addition of ethyl cellulose. It can be seen from the figure that with the increase of the amount of ethyl cellulose added, the viscosity of the obtained solution also increases.  However, increasing the viscosity of the oil phase solution will increase the rigidity of the interface between the oil phase and the water phase, which is very conducive to the oil phase droplets to maintain a large droplet size under high-speed shear without being destroyed by shear.  By observing the morphology of the emulsion after emulsifying the oil phase solution with the above three different amounts of ethyl cellulose, the influence of the increase in the viscosity of the oil phase solution can be more directly observed.