Investigation of synergism during radiation graft copolymerization of binary mixtures of vinyl monomers onto different textile fabrics by a dyeing method

Grafting of acrylonitrile and methyl methacrylate from their binary mixtures on cellulose using ceric ions

“…Within this range of feed composition, the monomer-monomer interactions are different from those at a low fraction of the AN (f AN Ͻ 0.25) and facilitate the incorporation of more AN molecules into the grafted chains along with the MMA molecules. In this range of feed composition variation (f AN ϭ 0.25-0.8), the cross monomer-monomer interactions show an increasing synergistic effect 11,16,17 on the AN molecules, to a maximum mol fraction (f AN ) of 0.8. Beyond this mol fraction (f AN Ͼ 0.8), the nature of the monomer-monomer interactions again show variation, which results in an appreciable decrease in the graft yield [ Fig.…”

“…The fraction of vinyl monomers are determined by the spectroscopic, elemental analysis, or reactivity ratio method. Recently, the dyeing method was also applied 11 to estimate the different fractions of the monomers in the resulting graft copolymers onto textile fibers. Grafting onto cellulose is preferably carried out with an initiator which is capable of creating active sites on the cellulose; otherwise, the formation of homocopolymers and homopolymers is predominate on the overall graft copolymerization.…”

Reactivity ratios during radiation‐induced grafting of comonomer mixtures onto polyester fabrics

“…It was possible to determine the poly(acrylic acid) (PAAc) and polystyrene (PS) graft fractions in the final graft copolymer by elemental analysis and FTIR spectroscopy, and then to calculate the reactivity ratios. Also, synergism during radiation grafting of the same binary mixture onto different textile fabrics was investigated by a proposed dyeing method based on the respective dye affinity of the grafted PAAc and PS for cationic and disperse dyes 7. Thermal stability,8 dyeability and mechanical properties9 of polyester textile (PET) and cotton/PET fabrics grafted with individual and binary mixtures of vinyl monomers using the technique of radiation grafting have been investigated.…”

Characterization and Evaluation of Thermal, Morphological, and Physicochemical Properties of Chemically Modified Lignocellulosic Biomass

“…A considerable number of studies on graft copolymerization of binary vinyl monomers onto lignocellulosic fibers using different methods of initiation have been reported by various researchers. [13][14][15][16] However, since no work on the surface modification of Abelmoschus esculentus fibers through graft copolymerization of binary vinyl monomers appears in the literature, in the present article we report the graft copolymerization of a binary mixture of methyl methacrylate (MMA) and ethyl acrylate (EA) onto Abelmoschus esculentus fibers by using ascorbic acid-hydrogen peroxide as redox initiator system.…”