The Importance of Water Retention of HPMC
April 24th 2024
HPMC manufacturer-Factors affecting the application performance of hpmc
Viscosity: When explaining the viscosity of a kind of hydroxypropyl methyl cellulose(hpmc), it must also indicate the environmental conditions such as the test method, solution concentration, rotor, rotation speed, test temperature, etc., just say hydroxypropyl methyl cellulose The viscosity of is meaningless. The main factors affecting viscosity are temperature, concentration, shear rate, pH and degree of polymerization.
It was concluded that as the temperature increased, the viscosity decreased obviously.
It was concluded that the higher the concentration of the solution, the higher the viscosity.
It is concluded that the greater the shear rate, the lower the viscosity.
It is concluded that the pH increases and the viscosity decreases.
Testing the viscosity curves of different polymerization degrees, it can be seen that the higher the degree of polymerization, the viscosity rises significantly.
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