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For instance, in tile adhesives, the inclusion of a redispersible polymer allows for better bonding between tiles and substrates. This is particularly important in environments prone to moisture, as traditional cementitious materials may struggle with adhesion over time. By leveraging the properties of redispersible polymers, manufacturers can create adhesives that perform well even in challenging conditions.
The methylation process involves the substitution of hydroxyl (-OH) groups on the cellulose chain with methyl (-OCH₃) groups, which enhances the hydrophobic characteristics of the polymer. This substitution plays a critical role in determining the solubility and viscosity of HPMC in various solvents. The degree of substitution, which refers to the average number of hydroxyl groups replaced by methyl groups, greatly influences the properties of HPMC, such as its thickening ability and gel formation capacity.
chemical structure of hpmc
