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Radiation-induced grafting of N,N-dimethylacrylamide onto polytetrafluoroethylene

✍ Scribed by Mirzan T. Razzak; Kazushige Otsuhata; Yoneho Tabata

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 323 KB
Volume: 33
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1987.070330707

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✦ Synopsis

Grafting of N, N-dimethylacrylamide (DMAA) onto polytetrafluoroethylene (PTFE) has been carried out by using gamma rays from a 6oCo 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.

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