Asymmetric behavior of membranes in pressure driven processes

✍ Scribed by K. Richau; H.-H. Schwarz; H. Buschatz; V. Kudela

• Book ID: 103055212
• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 461 KB
• Volume: 46
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(83)87188-4

✦ Synopsis

Depending on wether the pressure of the feed solution was di-'rected to the skin or to the supporting layer, different fluxes 'through reverse osmosis membranes of the Loeb-Manjikien type were observed. According to the orientation of pressure the fluxes of water and salt were measured. From the ratio of fluxes and the D.C. end A.C. conductivities of the membranes was COP eluded, that the asymmetry of fluxes is not caused by the gradient of structure of pores from the meso layer to the supporting layer but by the anisotropy of structure within the skin layer. At present, the structure of micropores cannot be investigated by electron microscopy. The influence of annealing and deacetylation on the membrane structure was investigated.