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Gamma ray induced graft copolymerization of N ‐vinylpyrrolidone, acrylamide and their mixtures onto polypropylene films
Author(s) -
Dessouki A. M.,
Taher N. H.,
ElArnaouty M. B.
Publication year - 1998
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199801)45:1<67::aid-pi896>3.0.co;2-a
Subject(s) - grafting , monomer , polypropylene , copolymer , swelling , polymer chemistry , materials science , n vinylpyrrolidone , amide , yield (engineering) , acrylamide , chemical engineering , nuclear chemistry , chemistry , polymer , composite material , organic chemistry , engineering
The radiation initiated grafting of N ‐vinylpyrrolidone (NVP) acryl‐amide (AAm) and their mixtures onto polypropylene (PP) films using a direct radiation technique has been investigated. Different solvents were used for diluting the monomers and it was found that dioxane was suitable for this grafting system. The influence 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 1·4 and 1·5 for (NVP), and 1·6 and 1·47 for (AAm), respectively. Also, the coefficients relating grafting rate to co‐monomer concentration for 20/80 and 50/50 AAm/NVP mixtures were found to be 1·6 and 1·7. 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.