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Synthesis and Characterization of Hydrogels Formed from a Glycidyl Methacrylate Derivative of Galactomannan by Adriano V. Reis; Osvaldo A. Cavalcanti; Adley F. Rubira; Edvani C. Muniz is a Pharmacology, Toxicology and Pharmaceutics article available to read on EtoBox.

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The present investigation describes a procedure for the synthesis of a glycidyl methacrylated derivative from galactomannan, GA-MA, and the respective hydrogel formation. The galactomannan (GA), raw material, was purified and dissolved in DMSO. After dissolution, 4-dimethyl-amino-pyridine (DMAP) and glycidyl methacrylate (GMA) were added. The modified polymer, quoted as GA-MA, was purified by precipitation in ethanol. Hydrogels were obtained from GA-MA in aqueous solution by polymerization of GA-MA using sodium persulfate (SP), as initiator, and N,N,N',N'-tetramethylethylenediamine (TEMED), as catalyst. For this, the cross-linking process was trigged by the addition of TEMED and sodium persulfate aqueous solutions. Two different concentrations of TEMED and SP were used. GA, GMA and GA-MA were characterized by FT-IR and NMR (13C and 1H) spectroscopy. The addition of GMA on GA molecules was confirmed through FT-IR results by appearing of a band at nu=1717cm(-1) and also by the cleavage of Cz.dbnd6;C groups of GA-MA (band at nu=1636cm(-1)) during the cross-linking process. The signals attributed to vinyl carbon of methacrylate (delta 138.52, 130.06ppm), to carbonyl (delta 171.87ppm) a

Who reads Synthesis and Characterization of Hydrogels Formed from a Glycidyl Methacrylate Derivative of Galactomannan?

Author

Adriano V. Reis; Osvaldo A. Cavalcanti; Adley F. Rubira; Edvani C. Muniz

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-5173)

Published

2003

Language

EN

Field

Pharmacology, Toxicology and Pharmaceutics (Life Sciences)