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Radiation‐induced grafting of N , N ‐dimethylacrylamide onto polytetrafluoroethylene
Author(s) -
Razzak Mirzan T.,
Otsuhata Kazushige,
Tabata Yoneho
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070330707
Subject(s) - grafting , yield (engineering) , solvent , polytetrafluoroethylene , acetone , polymer chemistry , materials science , activation energy , chemistry , composite material , organic chemistry , polymer
Grafting of N , N ‐dimethylacrylamide (DMAA) onto polytetrafluoroethylene (PTFE) has been carried out by using gamma rays from a 60 Co source. Degree of grafting was affected by grafting conditions. Especially, solvent for the grafting was found to be a very significant parameter to obtain a higher grafting yield. When ethylacetate or acetone was used as the solvent, grafting yield greater than 5% was obtainable while the graftcopolymerization scarcely occurred in the presence of other kinds of solvent such as ethanol or water. Apparent activation energy of the grafting in ethylacetate was calculated to be 7.90 Kcal/mol, and initial grafting rate of it was proportional to 0.55 power of dose rate.