New membranes bearing pyridinic ligands by plasma graft polymerization

✍ Scribed by V. Michel; C. Marzin; G. Tarrago; J. Durand

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 273 KB
• Volume: 70
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19981010)70:2<359::aid-app16>3.0.co;2-z

✦ Synopsis

2Ј-(2-Pyridyl)

ethyl methacrylate (2-PEMA) synthesized in our laboratory was grafted onto the surface of polyacrylonitrile (PAN) ultrafiltration membranes by plasma-induced graft copolymerization. He plasma was used to activate the surface of PAN membranes before the grafting reaction. The amounts of peroxides created by plasma treatment were determined using 2,2-diphenyl-1-picrylhydrazine (DDPH). Influences of plasma treatment power, time, monomer concentration, presence of inhibitor, and solvents on polymerization were investigated. Surface functionalization was characterized by FTIR-ATR, ESCA, SEM, and water-contact angles. Grafting yield was shown to increase with the monomer concentration and if a mixture of H 2 O/CH 3 OH was used. Hence, it was possible to show that plasma treatment was a good technique to introduce ligands with coordinating properties by modifying the surface of the PAN membranes.