Preparation of composite reverse osmosis membranes by plasma polymerization. II. Copolymerization of unusual comonomers

✍ Scribed by H. Yasuda; H. C. Marsh; J. Tsai

• Publisher: John Wiley and Sons
• Year: 1975
• Tongue: English
• Weight: 539 KB
• Volume: 19
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1975.070190809

✦ Synopsis

Preparation of composite reverse osmosis membranes by plasma polymerization of 4-picoline, 3,5-lutidine, benzene, and acetylene with unusual comonomers such as HzO and Nz is investigated using the flow system of the monomers and an electrodeless glow discharge with 13.5 MHa radio frequency. These comonomers are incorporated into the plasma polymers and change their properties. Consequently, relatively hydrophilic polymers are formed from rather hydrophobic monomers such as benzene and acetylene by the copolymerization. The addition of Hz0 and N2 also improves the reverse osmosis characteristics of plasma polymers from hydrophilic monomers such as 4-picoline and 3,5-lutidine. The reverse osmosis characteristics of plasma polymers are influenced by the ratio of HzO and Nz to the basic monomer as well as by the total pressure of the monomers.