Synthesis of potassium ion supporting gelatin and chitosan composite microspheres
HONG Jun-yi1, LIU Yong1, WANG Bao-ming1, HUA Quan-xian1, YING Dan-yang2, LIU Li1, TANG Jian-wei1
1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China; 2. CSIRO Agriculture and Food, Werribee, VIC 3030, Australia
Abstract: The potassium ion supporting semi-interpenetrating polymer network microspheres are prepared by the inverse emulsion method using gelatin and chitosan as main raw materials and glutaraldehyde as a crosslinker.The influences of different factors on the mass fraction and encapsulation efficiency of K2O in the microspheres are determined and the optimum conditions are obtained.The mass fraction and encapsulation efficiency of K2O in the microspheres prepared under the optimum conditions is 20.96% and 28.13% respectively.The prepared microspheres are characterized by FTIR and XRD.The results prove that the interpenetrating network structure is formed between gelatin and chitosan,and potassium ion is successfully encapsulated in the microspheres.It is found in the test of slow release performance that the release rate of potassium ion can be controlled by adjusting both the extent of crosslinking agent and the amount of chitosan in the preparation of microspheres.An empirical equation is used to do fitting analysis,indicating that the slow release of potassium ion in the microspheres tallies with Fick diffusion model,and has great potential for applications in slow release fertilizer.
洪俊逸, 刘咏, 王保明, 化全县, 应旦阳, 刘丽, 汤建伟. 载钾离子明胶/壳聚糖复合微球的制备与性能研究[J]. 现代化工, 2017, 37(9): 75-79.
HONG Jun-yi, LIU Yong, WANG Bao-ming, HUA Quan-xian, YING Dan-yang, LIU Li, TANG Jian-wei. Synthesis of potassium ion supporting gelatin and chitosan composite microspheres. Modern Chemical Industry, 2017, 37(9): 75-79.
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