scholarly journals Synthesis, characterization and antimicrobial activity applications of grafted copolymer alginate-g-poly(N-vinyl imidazole)

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11541-11548
Author(s):  
Soliman Mehawed Abdellatif Soliman ◽  
Mohamed Fathi Sanad ◽  
Ahmed Esmail Shalan
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Free Radical ◽  
Sodium Alginate ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Potassium Persulfate ◽  
Grafted Copolymer

N-Vinyl imidazole was grafted onto sodium alginate (PNVI-g-NaAlg) through a free radical polymerization technique in aqueous solution using potassium persulfate (K2S2O8, KPS) initiator material.

Rheokinetics of free-radical polymerization of acrylamide in an aqueous solution

1997 ◽  
Vol 37 (8) ◽  
pp. 1331-1338 ◽  
Author(s):  
S. G. Kulichikhin ◽  
A. Ya. Malkin ◽  
O. M. Polushkina ◽  
V. G. Kulichikhin
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization

PHOTO-INITIATED FREE RADICAL POLYMERIZATION OF METHYL ACRYLATE IN AQUEOUS SOLUTION

1957 ◽  
Vol 35 (11) ◽  
pp. 1267-1277 ◽  
Author(s):  
C. Chaitanyan Menon ◽  
M. Santappa
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Radical Polymerization ◽  
Methyl Acrylate ◽  
Free Radical Polymerization ◽  
Reaction Scheme ◽  
Ferrous Ion ◽  
Back Reaction ◽  
Photochemical Process ◽  
Initiation Of Polymerization

Photo-initiated free radical polymerization of methyl acrylate in aqueous solution is described. Using mainly light of wavelength 3650 Å and the ion pairs Fe3+OH− and Fe3+Cl− as photosensitizers the kinetics of polymerization were investigated by studying the effect of the variation of (i) intensity of light, (ii) concentration of monomer, (iii) fraction of light absorbed by the ion pair, and (iv) ferrous ion accumulating in, or initially added to, the system on (a) molecular weight of polymer, (b) the rate of disappearance of monomer, and (c) the rate of production of ferrous ion. The results have been analyzed in the light of a reaction scheme involving (1) a primary photochemical process and a dark back reaction, (2) initiation of polymerization by the primary product Fe2+OH or Fe2+Cl, (3) dissociation of the primary product, (4) a secondary dark back reaction, (5) initiation by a free radical, (6) propagation, and (7) termination. Examination of the experimental results in the light of the reaction scheme indicated that the initiation of polymerization was due to OH or Cl free radicals formed by the dissociation of the primary product and that termination occurred by combination of growing polymer chains. Some expressions involving specific rate constants have been evaluated.

Termination Kinetics of the Free-Radical Polymerization of Nonionized Methacrylic Acid in Aqueous Solution

2008 ◽  
Vol 41 (10) ◽  
pp. 3513-3520 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Pascal Hesse ◽  
Robin A. Hutchinson ◽  
Silvia Kukučková ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Radical Polymerization ◽  
Methacrylic Acid ◽  
Free Radical Polymerization ◽  
Kinetics Of
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