product introduction

Product introduction

★Appearance, dissolution and solubility

This product is white or yellowish flocculent powder. It is nontoxic, odorless, tasteless,soluble in water, and soluble in glycerine when a small amount of water exists. It has good compatibility and synergistic effect with other water-soluble adhesives, softeners and resins

★ Hygroscopicity

The equilibrium water content of CMC increases with the increase of D S value and air humidity, and decreases with the increase of temperature. When the room temperature and equilibrium humidity are 80%-85%, the equilibrium water content is more than 26%

★ Filmo genicity

CMC films with high viscosity and high molecular weight have high strength and flexibility. Some water-soluble resins are used as crosslinking agents, and the mixed solution of CMC is used to cast the film After further drying and sticizing treatment the film can become an insoluble product Water insolubility can also be obtained by treating the dried CMC with aluminum salt 

★Viscosity and rheology 

At the same D S value, the viscosity increases with the increase of concentration decreases with the increase of temperature,and rises after cooling. When the ph value of 1% CMC aqueous solution is 6.0-9.0, the viscosity is the highest,and when the pH value is<6or>11.5 the viscosity begins to decrease The viscosity of CMC solution decreased with the increase of shear rate due to its excellent pseudoplasticity.