Optimization of Carboxymethylation of Starch in Organic Solvents
Titel:
Optimization of Carboxymethylation of Starch in Organic Solvents
Auteur:
Kamel, S. Jahangir, K.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 56 (2007) nr. 5 pagina's 511-519
Jaar:
2007-05
Inhoud:
A comparative study of the influence of ethanol, benzene, acetone, isopropanol, and mixtures of ethanol-acetone, ethanol-benzene, and ethanol-isopropanol as slurry media on the degree of substitution and viscosity of carboxymethyl starch during carboxymethylation is presented. It is shown that the degree of substitution increases with increasing acetone, isopropanol, or benzene content in the mixed solvent. After the same carboxymethylation steps the degree of substitution with ethanol/benzene mixture is higher than that with ethanol/isopropanol mixture.
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