Ceric‐induced grafting of ethyl‐acrylate onto sodium alginate

Shah, Samir B.; Patel, C. P.; Trivedi, H. C.

doi:10.1002/apmc.1994.052140108

Cited by 26 publications

(17 citation statements)

References 15 publications

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“…As the concentration of LBG further increases, which hinders the movement of free radicals, thereby decreasing the % grafting efficiency. Similar observation was made by other author [20] . So the optimum LBG concentration is 7.14 g/L.…”

Section: Effect Of Polymer Concentrationsupporting

confidence: 92%

Synthesis of graft copolymers of acrylamide for locust bean gum using microwave energy: swelling behavior, flocculation characteristics and acute toxicity study

2015

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Section: Effect Of Polymer Concentrationsupporting

confidence: 92%

Synthesis of graft copolymers of acrylamide for locust bean gum using microwave energy: swelling behavior, flocculation characteristics and acute toxicity study

2015

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“…In addition, the decrease in the monomer-to-backbone ratio also accounted for the decrease of PG. Similar observations 3,4 have also been reported in the ceric-induced grafting of both MMA and ethyl acrylate (EA) onto SA.…”

Section: Effect Of Backbone Concentrationsupporting

confidence: 68%

“…Among chemical initiation methods, redox-initiated grafting offers advantages because in the presence of a redox system, grafting can be carried out under milder conditions and side reactions are at a minimum. So far, the grafting of vinyl monomers onto alginate has been carried out with ceric(IV) ions, [3][4][5][6][7] persulfate, 8 a redox pair of persulfate with urea 9 or thiourea, 10 hydrogen peroxide, 11 a couple of hydrogen peroxide molecules with ferrous, 12 ascorbic acid, 13 and others. With these initiators, ceric(IV) ions were used most extensively because of the higher extent of grafting compared with the others.…”

Section: Introductionmentioning

confidence: 99%

Grafting of methyl methacrylate onto sodium alginate initiated by potassium ditelluratoargentate(III)

Liu

Yang

et al. 2005

J of Applied Polymer Sci

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Sodium alginate (SA) was graft-copolymerized with methyl methacrylate in an alkali aqueous solution with potassium ditelluratoargentate(III) (DTA) as the initiator. Graft copolymers with both a high grafting efficiency (Ͼ90%) and a high percentage of grafting were obtained, which indicated that the DTA-SA redox pair was an efficient initiator for this grafting. The grafting parameters, including total conversion, grafting efficiency, and percentage grafting, were evaluated comparatively. The dependence of these parameters on temperature and time, monomer concentration, initiator concentration, and SA backbone concentration was also investigated. The overall activation energy of this grafting was calculated as 37.50 kJ/mol. Proof of grafting was obtained from gravimetric analysis and IR spectra. A tentative mechanism involving a two-step, single-electrontransfer process of DTA is proposed to explain the generation of radicals and the initiation of grafting. Some basic properties of the grafted copolymer were studied by instrumental analyses, including thermogravimetry, X-ray diffraction, and scanning electron microscopy. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1688 -1694, 2005

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“…In addition, the decrease in the monomer‐to‐backbone ratio also accounted for the observed decrease in % G . Similar observations have also been reported earlier …”

Section: Resultssupporting

confidence: 93%

Photo‐induced graft copolymerization of acrylonitrile onto sodium salt of partially carboxymethylated guar gum

Trivedi

Thaker

Trivedi

2014

J of Applied Polymer Sci

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Photo‐induced graft copolymerization of acrylonitrile (AN) onto sodium salt of partially carboxymethylated guar gum (Na‐PCMGG, DStrue¯ = 0.291) was carried out in an aqueous medium using ceric ammonium nitrate (CAN) as photo‐initiator to synthesize a novel graft copolymer, Na‐PCMGG‐g‐PAN, which may find potential application as a superabsorbent hydrogel. Studying the influence of concentrations of photo‐initiator (CAN), nitric acid, monomer (AN) as well as reaction time, temperature, and amount of substrate on the grafting yields, the reaction conditions for optimum grafting were evaluated. Maximum values of the grafting yields achieved were %G = 285.77 and %GE = 70.76 at optimized conditions. The proposed kinetic scheme could explain very well the experimental results. The influence of different kind of acids on the grafting yields was also studied. Grafting process was confirmed with the help of FTIR, thermal (TGA/DSC), and SEM techniques. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41371.

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Ceric‐induced grafting of ethyl‐acrylate onto sodium alginate

Cited by 26 publications

References 15 publications

Synthesis of graft copolymers of acrylamide for locust bean gum using microwave energy: swelling behavior, flocculation characteristics and acute toxicity study

Synthesis of graft copolymers of acrylamide for locust bean gum using microwave energy: swelling behavior, flocculation characteristics and acute toxicity study

Grafting of methyl methacrylate onto sodium alginate initiated by potassium ditelluratoargentate(III)

Photo‐induced graft copolymerization of acrylonitrile onto sodium salt of partially carboxymethylated guar gum

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