Synthesis and Characterization of Poly(Methyl Methacrylate) Grafted from Acacia Gum

Abstract

Graft polymerization of methyl methacrylate onto acacia gum has been studied in detail. The grafting was found to be optimal under the following reaction conditions: gum at 0.4 g/dL, monomer at 7.52 × 10−;2 mol/dL, ceric ammonium sulfate at 15.81 × 10−;4 mol/dL, H2SO4 at 0.037 mol/dL, temperature at 50 °C and time at 3.0 h. Fourier transform infrared spectroscopy was sed for the confirmation of grafting. Thermal and physical properties of the copolymer were studied. A probable mechanism of polymerization has been suggested based on reaction kinetics.

Synthesis, characterization, and properties of cashew gum graft poly(acrylamide)/magnetite nanocomposites

“…Cashew gum (CG) is particularly an interesting water‐soluble polymer exudated from the cashew tree, very abundant in India. It is similar to arabic gum family which is widely used in food industry . CG is an acidic polysaccharide complex that contains galactose in the main chain with terminal branches such as glucuronic acid, arabinose, rhamnose, xylose, glucose, and mannose .…”

Thermal and Flocculation Properties of Acacia Gum Grafted with Cationic Polyacrylamide

“…Acacia gum is composed of 1,3-linked β-d-galactopyranosyl units (main chain) with two-to-five 1,3-linked β-d-galactopyranosyl units, joined to the main chain by 1,6-linkages [11]. The common advantages including renewability, biodegradability, non-toxicity and biocompatibility have enabled it to be used in many fields such as food, suspending agents and pharmaceutical and cosmetic industries [12,13]. Natu-ral organic flocculants also have some disadvantages such as low molecular weight, low charge density and short shelf life.…”

Ceric ammonium sulfate/sodium disulfite initiated grafting of acrylamide on to Cassia reticulata seed gum

“…Ceric ion,12 redox initiators,6, 13–15 γ‐radiation,16 and microwave irradiation17–19 have been employed for the initiating graft copolymerization of vinyl monomers with the natural polysaccharides. Use of ceric(IV) ion alone has limitation of producing large quantities of the homopolymer; however, ceric ammonium sulfate/dextrose,20 ceric ammonium nitrate‐/nitric acid,21 Ce(IV)/H 2 SO 4 medium,22 and peroxydiphosphate/disulfite23 have been reported for efficient grafting. This article, for the first time, reports the use of ceric ammonium sulfate/sodium disufite redox pair for PAM grafting on to CR seed gum, in which significantly high % G and % E were observed.…”