ABSTRACT
Modified celluloses come from cellulose, which is dispersed in an alkaline solution to form alkaline cellulose. Methyl cellulose is soluble in cold water, but it is difficult to disperse it. The properties of methyl cellulose will be determined by the degree of polymerization and the degree of substitution. It is recommended to premix the methyl cellulose with other ingredients to improve its dispersion in cold water. Methyl cellulose forms a thermore-versible gel from the incipient gel temperature (IGT) which will vary depending on the degree of substitution of the molecule. By stopping the heating, the gel will melt leaving a solution that will be recovering the initial viscosity. The Hydrowpropyl methyl cellulose forms thermoreversible gels from the IGT, which will vary depending on the degree of substitution of the molecule. Carboxy methyl cellulose is soluble in both cold and hot conditions and it do not precipitate in the presence of alcohol.
