TITLE:
Optimization of Ceric Ammonium Nitrate Initiated Graft Copolymerization of Acrylonitrile onto Chitosan
AUTHORS:
A. Shanmugapriya, R. Ramya, M. Venkatachalam, P.N. Sudha
KEYWORDS:
Chitosan-g-polyacrylonitrile, Ceric ammonium nitrate, Grafting efficiency, Grafting yield
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.3 No.6,
June
29,
2011
ABSTRACT: In the present work, graft copolymerization of polyacrylonitrile onto chitosan has been carried out in the presence of ceric ammonium nitrate redox initiator. Optimization of grafting of polyacrylonitrile onto chito-san was performed by varying the process parameters such as ceric ammonium nitrate (CAN) concentration, polyacrylonitrile concentration and reaction time to study their influence on percent grafting and grafting ef-ficiency. The optimum reaction conditions obtained for grafting of acrylonitrile onto chitosan were reaction time 55 mins, CAN concentration 1% in Con. HNO3, and polyacrylonitrile concentration 0.75 mol/L. The characterization of the grafted products by means of FTIR, thermal analysis, X-ray diffraction and scanning electron microscopy furnished the evidence of grafting of polyacrylonitrile onto chitosan.