A study on graft copolymerization of electron donor and electron acceptor monomer mixture onto Tefzel film

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

“…The formation of such a complex decreases the diffusion of the monomer to the active sites leading to the decrease in percentage of grafting. Similar observations have been made by Garnett et al 20 and Kaur et al 21 Thus, from the foregoing discussion, it is observed that there exists an optimum total dose for affording maximum percentage of grafting, which varies with the type of the monomer used for grafting. If the number of active sites generated on irradiation was the only reason for affording maximum percentage of grafting then all the monomers regardless of their reactivity would have produced maximum grafting at a single total dose under optimum conditions.…”

Broader Spectrum: Examples

“…Tefzel grafted with a mixture of MA and styrene shows low swelling in water, but in benzene and DMF the swelling is appreciable [9] .…”

Radiation-Induced Graft Copolymerization of Methacrylonitrile onto Poly (Tetrafluoroethylene-co-ethylene) Film by Discontinuous Method

“…The effect of various grafting parameters and the effect of aliphatic alcohols of different chain lengths on grafting of acrylonitrile, methacrylonitrile, methylacrylate and ethylacrylate onto Tefzel film by preirradiation method has already been studied in our laboratory [9,10]. Studies have also been done on the graft copolymerization of a monomer combination of an electron donor and an electron acceptor onto Tefzel film [11]. Modification of poly(tetrafluoroethylene-co-ethylene), Tefzel film has been performed by grafting methylmethacrylate by radiation methods, including preirradiation and double-irradiation with improved thermal stability [12].…”