Synthesis of casein‐g‐poly(methyl acrylate). II

Abstract

The synthesis of casein‐g‐poly(methyl acrylate) was studied using the potassium peroxydisulfate–ascorbic acid redox system. The effect of synthetic variables has been investigated in the light of rates of conversion of monomer, graft copolymerization and homopolymerization, percent grafting, and grafting efficiency. The results are compared with the system initiated by pure potassium peroxydisulfate alone.

Waterborne acrylic–casein latexes as eco-friendly binders for coatings

“…In such works [17][18][19][20][21], the effect of concentrations of initiator, monomer and casein on the grafting extent, was studied. Also, casein-based latexes as filmforming materials were previously synthesized by utilizing persulfate initiators together with sodium hydrogensulfite as a redox pair [23,24].…”

“…Emulsion polymerization of acrylic monomers in the presence of casein has been previously studied in aqueous media using persulfate initiators and in absence of emulsifier [17][18][19][20][21], due to the marked amphiphilic character of casein that makes it an important surface-active agent [22]. In such works [17][18][19][20][21], the effect of concentrations of initiator, monomer and casein on the grafting extent, was studied.…”

Grafting emulsion polymerization of glycidyl methacrylate onto leather by chemical initiation systems

“…The grafting of acrylate monomers onto collagenous or soluble collagenous substrates, leather, and hide powder has been discussed previously 14, 15. Grafting polymerization has been initiated by different initiation systems, including Ce(IV) ions,16 potassium permanganate,7 and potassium persulfate (PPS),17 as well as redox system such as PPS/ascorbic acid18 and persulfate/bisulfite redox systems 19, 20. The improvement of the properties of leather can be accomplished with different techniques; one of them is the grafting emulsion polymerization of a monomer onto leather by chemical and radiation initiators 21, 22.…”

Syhthesis of Casein Graft Poly(acrylonitrile)

“…Casein, a milk protein, which finds its application in leather, textiles, and paper industries has poor film forming properties due to the hydrogen bonds between C = 0 and -NH groups. 7 This property may be altered by weakening these intermolecular bonds through graft copolymerization of acrylic monomer onto casein. 7 Casein grafted with acrylonitrile (AN) forms glazable film 7 when compared to casein grafted with other monomers like ethyl, methyl, and butyl acrylates.…”

“…7 This property may be altered by weakening these intermolecular bonds through graft copolymerization of acrylic monomer onto casein. 7 Casein grafted with acrylonitrile (AN) forms glazable film 7 when compared to casein grafted with other monomers like ethyl, methyl, and butyl acrylates. At higher temperatures, AN forms into a stable cyclic compound.…”