Synthesis, characterization and antimicrobial activity of poly ( N-vinyl imidazole) grafted carboxymethyl chitosan

Poly ( N-vinyl imidazole) (PNVI) has been grafted onto carboxymethyl chitosan in aqueous solution using potassium persulphate (KPS) as initiator. The effect of the monomer and initiator concentration, the reaction temperature and time on the grafting yield have been investigated. The maximum graftin...

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Bibliographic Details
Published in:Carbohydrate polymers 2010-03, Vol.79 (4), p.998-1005
Main Authors: Sabaa, Magdy W., Mohamed, Nadia A., Mohamed, Riham R., Khalil, Neveen M., Abd El Latif, Soliman M.
Format: Article
Language:English
Subjects:
Antimicrobial activity
Applied sciences
Carboxymethyl chitosan
Characterization
Exact sciences and technology
Grafting efficiency
N-Vinyl imidazole
Natural polymers
Physicochemistry of polymers
Starch and polysaccharides
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Summary:Poly ( N-vinyl imidazole) (PNVI) has been grafted onto carboxymethyl chitosan in aqueous solution using potassium persulphate (KPS) as initiator. The effect of the monomer and initiator concentration, the reaction temperature and time on the grafting yield have been investigated. The maximum grafting yield was achieved at [KPS] = 8 × 10 −2 mol/L, [M] = 1 mol/L at reaction temperature = 60 °C within reaction time = 2.5 h. The grafted products were characterized by FTIR, elemental analysis, SEM photographs, solubility tests, thermal analysis and antibacterial activity. Grafted products have improved the antimicrobial activity of carboxymethyl chitosan.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2009.10.024