Abstract
Scrap vulcanized rubber is amongst a bigger waste polymers. It does not decompose easily owing to its cross linked structure. Modification of scrap tires powder by the grafting with 2-acrylamido-2-methylpropanesulfonic acid (AMPS) is described. The grafting is achieved through free radical initiation. The effects of different amount of monomer and initiator were examined. Also the influence of reaction time and temperature were investigated. The grafted waste rubber was characterized by FT/IR, SEM and DSC measurements. The proposed mechanism of the grafting reaction is discussed. From DSC and SEM studies of WR-g-AMPS compared with PAMPS and WR, the results show that the particle size and crystallinity were enhanced for the grafted copolymers. The obtained modified scraped tires will used as an ion exchanger for the future applications.
Highlights
Pollution of environments with industrial and permanent waste materials is of the biggest problem for civilization at the present and future time
From DSC and scanning electron microscope (SEM) studies of WR-g-AMPS compared with PAMPS and WR, the results show that the particle size and crystallinity were enhanced for the grafted copolymers
The grafting of AMPS were performed onto previously sulfonated WR, the sulfonation was done aiming to convert the waste materials to be more hydrophilic
Summary
Pollution of environments with industrial and permanent waste materials is of the biggest problem for civilization at the present and future time. Especially scrap tires cause significant environmental problems due to their high thermal resistivity to nature conditions. To reduce these wastes from the environment and reduce costs of rubber raw material, attempts were being made to recycle of waste rubber [1]. Reuse of waste rubber by grafting reaction is studied by some researchers [11,12,13]. The surface modification of waste tire by grafting with styrene and maleic anhydride are studied at different reaction conditions [16]. The present studies are aiming to graft 2-acrylamido-2-methylpropanesulfonic acid onto previously sulfonated waste rubber granular, by free radial initiation method.
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