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Aspects of thermal grafting of acrylonitrile onto ethyl cellulose in homogeneous media

✍ Scribed by E. A. Abdel-Razik

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 353 KB
Volume: 46
Category: Article
ISSN: 0323-7648
DOI: 10.1002/actp.1995.010460206

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✦ Synopsis

Homogeneous thermal graft copolymerization of acrylonitrile (AN) onto ethyl cellulose (EC) by using ammonium persulfate (APS) as free radical initiator was carried out in the toluene: DMSO solvent system. Many variables affecting the grafting parameters were studied.The effect of using comonomer pairs of acrylonitrile and acrylamide on the grafting yield was examined. Different techniques such as IRand NMR were used. ATrommsdorf effect was observed in certain systems.

The rate of graft copolymerization of acrylonitrile onto EC was determined as R, = 0.16 Yo m i d . The higher carbonyl content of thermooxidized EC showed lower grafting yield. The mechanism of the grafting reaction is discussed.

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