Effect of 4A Zeolite on the Properties of Sodium Alginate/Chitosan Microspheres
4 A zeolite/sodium alginate/chitosan composite microspheres were prepared by piercing method using chitosan and sodium alginate as carrier material and 4 A zeolite as performance modifier. The microspheres were characterized by microscope, SEM, FTIR and XRD. The effect of addition amount of4 A zeolite on the granulation rate and swelling properties of composite microspheres was investigated. The results showed that the mass and particle size of composite microspheres increased as the addition amount of 4 A zeolite increased. The addition of 4 A zeolite was beneficial to the formation of composite microspheres, and the highest percentage of granulation rate reached 98.5％ (4 A zeolite usage amount was1 g). In addition, the freeze-dried composite microspheres had a uniform size distribution and regular spherical shape. Under different pH value and temperature conditions, 4 A zeolite could not only effectively inhibit the swelling of microspheres, but also make the composite microspheres remain good pH and temperature sensitivity.
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NSTL
万方数据
维普
