湖北工程学院学报2016，Vol.36Issue(6)：10-14,5.
海藻酸钠/壳聚糖包覆尿素微球的制备及其缓释行为
Sodium Alginate/Chitosan Coated Urea Preparation of Microspheres and Its Slow Release Behavior
摘要
Abstract
Using chitosan and carboxymethyl chitosan and sodium alginate as carrier materials for slow-release urea,the optimal preparation method was determined for coated urea type.With chitosan and sodium alginate as the main raw material,urea as core material,calcium chloride and glutaralde-hyde as crosslinking agent,one- step and two - step method were used for the preparation of chi-tosan,sodium alginate composite microspheres.By scanning electron microscope to observe the coat-ing of urea,the slow release effect of coated urea was tested by still water immersion method,and the optimum preparation conditions were obtained.The results showed that when the ratio of carboxym-ethyl chitosan and sodium alginate was 2:8,the urea content was 10%~20%,the concentration of crosslinking agent was 3%,and the effect of urea was the best.关键词
壳聚糖/海藻酸钠/尿素/缓控释肥Key words
chitosan/alginate/urea/controlled-release fertilizer分类
轻工纺织引用本文复制引用
余晓华,颜永斌,郑科旺,黄明军,覃彩芹..海藻酸钠/壳聚糖包覆尿素微球的制备及其缓释行为[J].湖北工程学院学报,2016,36(6):10-14,5.基金项目
国家自然科学基金面上项目(31371750) （31371750）
