IngentaConnect Modification of Tefzel film through graft copolymerization

Authors: Inderjeet Kaur¹; BN Misra¹; Baljit Singh¹; Nirupma Gupta¹; Neelam Sharma¹

Source: Polymer International, Volume 53, Number 10, October 2004 , pp. 1572-1580(9)

Abstract:

The graft copolymerization of styrene (st) and methacrylonitrile (MAN) onto Tefzel film in aqueous media by the preirradiation method has been studied. In order to follow the effect of preswelling of the backbone polymer, grafting was attempted onto preirradiated Tefzel film and monomer preswollen, preirradiated Tefzel film. Optimum conditions pertaining to maximum percentage of grafting of st and MAN have been evaluated. Grafting onto preswollen, preirradiated Tefzel film displayed better results. The effect of different alcohols of increasing chain length on the percentage of grafting of st and MAN was also studied. Graft copolymerization of st showed an increase, while grafting with MAN exhibited a decrease, in the percentage of grafting in the presence of alcohols as compared to that obtained in the aqueous medium. Characterization of the graft copolymers was made by IR and thermogravimetric studies. Tefzel-graft-polystyrene showed improved thermal stability while the MAN grafted onto preswollen, preirradiated Tefzel film produced graft copolymer with poor thermal stability. Copyright © 2004 Society of Chemical Industry

Keywords: graft copolymerization; Tefzel film; preirradiated; preswollen; styrene; methacrylonitrile; thermogravimetric analysis; swelling behaviour

Document Type: Research article

DOI: 10.1002/pi.1444

Affiliations: 1: Chemistry Department, Himachal Pradesh University, Shimla-171005, India

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