Graft copolymerization of acrylate monomers onto sulfonated jute–cotton blended fabric

Abstract

Graft copolymerization of acrylate monomers, e.g., methyl methacrylate and ethyl methacrylate, onto bleached sulfonated jute-cotton-blended fabric was carried out in an aqueous medium, using potassium persulfate as an initiator under the catalytic influence of ferrous sulfate in a nitrogen atmosphere. The parameter variables, e.g., concentrations of monomer, potassium persulfate, ferrous sulfate, reaction time, and reaction temperature, directly influenced the percent graft yield. The percent graft yield increased to a certain value in each variable, and the percent graft yield of methyl methacrylate and ethyl methacrylate was about 15.9 and 17.1%, respectively. Polymer grafting was characterized by thermogravimetric analysis, infrared spectroscopy, and X-ray diffractometry. Grafting improved the thermal stability, protected from photo-oxidative degradation, decreased the dyeability, and had positive impact on fastness characteristics.

Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil‐palm empty fruit bunch fibers

“…However, the retardation of diffusion after some polymer formed on the fiber surface and the decrease in the monomer and initiator with increasing time were the reasons for the reduction of the grafting percentage and grafting efficiency 17, 18. The reduction also may have been due to the degradation of the grafted chain on the fiber 19. The degradation can be explained by the chain scission of the growing grafted copolymer, which probably takes place at a low temperature for a longer reaction time.…”

“…Radical copolymerization requires a thermal decomposition step for the initiator 19. This leads to the fact that the reaction temperature must be properly selected for the decomposition of the initiator to produce free radicals.…”

Characterization of grafted jute fiber using acrylate monomers pretreated with alkali

“…At the end of the desired reaction period, the fibers were washed with hot distilled water (Sikdar et al 1995;Abou-Zeid et al 1984;Samal et al 1990). It was then extracted with acetone for 10 h in a soxhlet apparatus, to remove loosely adhering polymer, washed well and dried at 60 °C (Mondal et al 2006). The weight of dried fiber, after and before modification, was taken.…”

“…This grafting has been done using chemical Mondal et al 2004Mondal et al , 2006Mondal 2003;Mondal and Haque 2007), photochemical (Ghosh and Paul 1983) and radiation-induced (Khan et al 2010(Khan et al , 2015Zaman et al 2012) methods. In these attempts, the grafted fiber has shown improved thermal, tensile and color fastness properties.…”

“…Other work has been done on graft copolymerization of jute fiber with nitrile (Mondal et al , 2004Mondal 2003), acrylate (Mondal and Haque 2007;Mondal et al 2006Mondal et al , 2013, acrylic and amide monomer (Mondal et al 2002) monomers. The purpose was to develop the grafting process and improve the resultant physical properties of the modified products.…”