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Methoxy and hydroxypropoxy of HPMC
original
2022-07-21 14:55:24
The content and ratio of methoxy and hydroxypropoxy of HPMC have certain influence on the water solubility, water retention capacity, surface activity and gel temperature of the product.
Usually high methoxy content and low hydroxypropoxy content, the product has good water solubility, surface activity and low gel temperature; if the hydroxypropoxy content is increased appropriately, the gel temperature can be increased and water retention can be improved; but too high hydroxypropoxy content will lower the gel temperature, water solubility and surface activity become poor, but it can improve the solubility performance in organic solvents.