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Saccharum cilliare fibre; acrylonitrile; graft copolymer; redox initiator; chemical resistance.

In the present work, graft co-polymerization of acrylonitrile (AN) onto Saccharum cilliare fibre has been carried out in the presence of potassium persulphate and ferrous ammonium sulphate (FAS–KPS) as redox initiator. The reactions were carried out under pressure in an autoclave. Various reaction parameters such as pressure, time, pH, concentrations of initiator and monomer were optimized to get maximum graft yield (35.59%). Grafted and ungrafted Saccharum cilliare fibres were then subjected to evaluation of some of their properties like swelling behaviour in different solvents, moisture absorbance under different humidity levels, water uptake and resistance towards chemicals such as hydrochloric acid and sodium hydroxide. The characterization of the graft copolymers were carried out by FTIR spectrophotometer, X-ray diffraction (XRD) and scanning electron microscopic (SEM) studies.

A S Singha¹ Anjali Shama¹ Vijay Kumar Thakur¹

1. Material Science Laboratory, National Institute of Technology, Hamirpur 177 005, India

Manuscript received

14 June 2007

Manuscript revised

28 November 2007