Gamma ray induced graft copolymerization ofN-vinylpyrrolidone, acrylamide and their mixtures onto polypropylene films

✍ Scribed by Dessouki, A. M.; Taher, N. H.; El-Arnaouty, M. B.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 410 KB
• Volume: 45
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199801)45:1<67::aid-pi896>3.0.co;2-a

✦ Synopsis

The radiation initiated grafting of N-vinylpyrrolidone (NVP) acrylamide (AAm) and their mixtures onto polypropylene (PP) Ðlms using a direct radiation technique has been investigated. Di †erent solvents were used for diluting the monomers and it was found that dioxane was suitable for this grafting system. The inÑuence of other grafting parameters such as inhibitor, monomer concentration and dose rate on the rate of grafting and grafting yield was studied. The values of the coefficients relating the grafting rate to monomer concentration and dose rate were found to be 1É4 and 1É5 for (NVP), and 1É6 and 1É47 for (AAm), respectively. Also, the coefficients relating grafting rate to comonomer concentration for 20/80 and 50/50 AAm/NVP mixtures were found to be 1É6 and 1É7. Some physicochemical properties such as swelling, thermal behaviour, mechanical and electrical conductivity were also investigated, and the possibility of some practical uses, e.g. the removal of heavy metals from solution, for the grafted membranes is discussed.

1998 SCI.