Some experimental parameters affecting performance of composite reverse osmosis membranes produced by plasma polymerization

✍ Scribed by John R. Hollahan; Theodore Wydeven

• Publisher: John Wiley and Sons
• Year: 1977
• Tongue: English
• Weight: 729 KB
• Volume: 21
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1977.070210405

✦ Synopsis

Reverse osmosis (RO) composite polymer membranes were prepared from the organic monomers 3-butenenitrile, propyleneimine, 4-vinylpyridine, and allylamine by plasma polymerization in a radio-frequency discharge. RO performance data (water flux and salt rejection) were obtained as a function of discharge power and deposition time. Membranes were subjected to RO testing at 45°C for up to 150 hr to investigate possible membrane deterioration. No appreciable degradation was observed. Water flux increased significantly with time at 45OC, and improved salt rejection at 45OC was observed in most cases.