| Message: | Rheology of Carbomer
Most carbomer gels have almost no rheology. When the carbomer gel is stressed, its viscosity will decrease immediately, but when the stress disappears, its viscosity will be restored immediately.
Carbomer sensitivity
Mechanical shearing-After carbomer is neutralized, long-term stirring or high-shear stirring will cause viscosity loss
The presence of ions-electrolyte will reduce thickening efficiency
·Ultraviolet rays--Long-term ultraviolet radiation will reduce the viscosity of the carbomer gel when pH>/=10, when exposed to ultraviolet rays
Carbomer insensitivity
·Temperature change--Carbomer gel is not affected by temperature
·Microorganisms-Carbomer does not support the growth of bacteria and mold, and the growth of bacteria and mold does not affect the gel properties. The conventional dosage is 0.2-0.4%, which can replace 3-7% of conventional emulsifiers. Carbomer polymer has almost no surfactant properties. Therefore, adding 0.1-0.5% surfactant with low HLB value can adjust the oil phase particles to be smaller to prepare white and delicate cream products. |
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