4-Vinyl pyridine (4-VP) has been grafted onto isotactic polypropylene (IPP) powder by a pre-irradiation method. The extent of grafting has been studied as a function of various reaction parameters. The optimum conditions leading to maximum grafting have been evaluated. The graft copolymers have been characterized by IR spectroscopy and thermogravimetric analysis (TGA). The thermal behaviour of the IPP improved after grafting. On comparison of the results of grafting of 4-VP onto IPP fibres and onto IPP powder, it was observed that the physical form of the backbone affects the graft yield. Fibres provided better results than powder.
References
1.
ChapiroA., “Radiation Chemistry of Polymerie Systems”, Wiley Interscience, New York, (1962)
