Surface Modification of Acrylonitrile Copolymer Membranes by Grafting Acrylamide. II. Initiation by Fe2+/H2O2

✍ Scribed by Xiaoyan Yuan; Jing Sheng; Fei He; Yi Tang; Ningxiang Shen

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 391 KB
• Volume: 69
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19980906)69:10<1907::aid-app3>3.0.co;2-i

✦ Synopsis

Surface modification of membranes of an acrylonitrile copolymer (PAN) containing 5.5% methyl methacrylate and 4.0% sodium methylpropylenesulfonate by grafting acrylamide (AAm) with ferrous ammonium sulfate/H 2 O 2 as an initiator in aqueous medium was studied. The grafted copolymer was verified by infrared spectra, X-ray photoelectron spectroscopy, and a scanning electron microscope (SEM). From the SEM photos, we know that the AAm homopolymer branches were grafted onto the surface of the membrane and the morphology of the PAN membrane did not change. The results showed that the extent of grafting was varied with some parameters, such as the pH value of the medium, reaction time and temperature, and concentration of AAm and H 2 O 2 . The results of the water-absorption percent of the membrane showed that the wettability of the modified PAN membrane was improved.