Syntheses and characterisation of graft copolymers of maize starch and Methacrylonitrile (cas 126-98-7)

Add time:09/24/2019    Source:sciencedirect.com

Grafting of methacrylonitrile (MAN) onto dried maize starch using ceric ammonium nitrate (CAN) as an initiator has been studied gravimetrically under nitrogen atmosphere in aqueous medium. The percentage grafting is favoured by increasing monomer concentration and reaction time but is affected by higher concentration of initiator and high temperature. No grafting was observed beyond 45°C. The optimum conditions established for grafting were: [CAN]=0.002mol/l which was added in molar nitric acid; [MAN]=0.755mol/l; reaction time, 180 min; and temperature, 35°C. The graft copolymers were analyzed by infrared spectroscopy and acid hydrolysis. The grafting of methacrylonitrile onto starch does not alter the thermal stability of starch. The crystalline region of starch was also involved in grafting. Scanning electron microscopy showed a thick polymer coating of grafted PMAN on the starch surface.

We also recommend Trading Suppliers and Manufacturers of Methacrylonitrile (cas 126-98-7). Pls Click Website Link as below: cas 126-98-7 suppliers

Prev:N-vinyl-2-pyrrolidone and Methacrylonitrile (cas 126-98-7) copolymers: nuclear magnetic resonance characterization
Next:Review paperToxicology of Methacrylonitrile (cas 126-98-7))