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

Abstract

Ethyl acrylate (EA), Vinyl imidazole (VI), and their binary mixture have been copolymerized onto rayon in aqueous medium by mutual method using g-radiation. The graft yield has been determined as a function of different reaction parameters such as total dose, concentration of vinyl monomers, and amount of water. Effect of surfactant (1-octane sulfonic acid, sodium salt) has been studied on the percentage of grafting of EA, VI, and (EA þ VI). A plausible mechanism has been suggested to explain the observed behavior of the surfactant on grafting. Water retention and moisture regain of the grafted film was determined at appropriate relative humidity. The graft copolymers have been characterized by IR spectroscopy and scanning electron microscopic methods.

A review of bioactive plant polysaccharides: Biological activities, functionalization, and biomedical applications

“…Intensive studies have been carried out on the graft copolymerization of cellulosic polymers with suitable hydrophobic monomers to introduce desired functionalities into the cellulosic backbone, so as to overcome the sensitivity of cellulosic fibers towards water/moisture absorption and poor chemical resistance and thus to improve the existing physicochemical properties of the cellulosic polymers (Bashar, Khan, & Idriss Ali, 1995;Kaur, Kumar, & Sharma, 2010;Rattan, Maitra, Misra, & Kaur, 2008;Thakur, Thakur, & Gupta, 2013a). A biocide cellulose carbamate with antimicrobial properties was prepared by impregnating the fibers in aqueous thiourea solution and subsequently grafting with acrylonitrile (Dahou, Ghemati, Oudia, & Aliouche, 2010).…”

RSM optimized soy protein fibre as a sorbent material for treatment of water contaminated with petroleum products

“…SPF fibre has smooth and homogeneous surfaces which get swollen on benzoylation. Graft copolymerization resulted in the rough and heterogeneous surfaces due to incorporation of poly (MMA) chains [30]. The increase in roughness further prompts sorption as it enhances trapping and physical adsorption of oil on surface of sorbent.…”

Uranium extraction from seawater: material design, emerging technologies and marine engineering

“…In addition to the irradiation parameters, the DOG is also influenced by the feed monomer and comonomer ratio. [60][61][62][63][64][65][66][67] Earlier studies suggested that comonomers such as acrylic acid (AA), methacrylic acid (MA), and glycidyl methacrylate (GMA) (Fig. 5D) had a certain influence on the adsorption performance of uranium adsorbents.…”