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Hydroxypropyl Methyl Cellulose(HPMC) Properties

Views:0     Author:Site Editor     Publish Time: 2021-12-24      Origin:Site

In the production of construction materials, especially dry mortars, cellulose ethers play an irreplaceable role. Especially in the production of special mortars (modified mortars), it is an indispensable and important component.
Hydroxypropyl Methyl Cellulose Properties
HPMC has thermal gel properties, i.e. it has excellent cold water solubility and hot water insolubility. It dissolves completely into a clear solution when placed in cold water and stirred. Some grades are virtually insoluble in hot water above 60°C and only swell. This property can be used for its washing and purification, which reduces costs, reduces pollution and increases production safety.
HPMC is a non-ionic mixed cellulose ether with no ionic charge in solution. It does not interact with metal salts or ionic compounds, a property that can be fully useful in the pharmaceutical field without affecting its efficacy.
HPMC has strong enzyme resistance and increases with substitution, which is of great benefit to the storage of manufactured pharmaceuticals than other sugar and starch products and reduces the possibility of mould. It can be used extensively in the paint and food industries.
HPMC is metabolically inert and, as a pharmaceutical excipient, is not metabolised and not absorbed. Therefore, it also does not provide heat in food products and is uniquely suitable for diabetics for low calorific value, salt-free and non-altering foods.
HPMC aqueous solution has excellent film-forming properties and can provide good conditions for tablets, pills and coatings. The film it forms has the characteristics of colourless, transparent and tough.
The adhesion of HPMC to mortar construction is higher than that of methyl cellulose.

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