SEM micrographs in Fig. 1 display the microstructure of pure CS membrane and the CS/SF blending membranes. With SF adding in the CS membrane without ADA, irregular filamentous stripes were observed on the membrane
surface. Under the high multiple image, consistency of SF and CS is not so good that resulted in these protuberances. However, the surface roughness of membranes was decreased in the ADA fixed 60%CS/40%SF blending membrane. The ADA fixed 60% CS/40% SF blending membrane did not show microscopic phase separation morphology, which was probably due to the interaction between CS and SF with ADA. These indicate that ADA could enhance the consistency of SF/CS due to the chemical combination of ADA.