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Slow-release Urea Preparation by Film Coating with Mechanical Activated Starch Acetate
Author(s): 
Pages: 823-826
Year: Issue:  4
Journal: Hubei Agricultural Sciences

Keyword:  玉米淀粉机械活化醋酸酯淀粉包膜尿素缓释放;
Abstract: 采用浇铸法制备醋酸酯淀粉膜,研究了取代度、铸膜液溶剂种类、铸膜液质量体积分数和铸膜液温度对膜性能的影响.采用物理法制备包膜尿素,以淋溶法对包膜尿素的释放特性进行评价.结果表明,机械活化玉米醋酸酯淀粉成膜性能好.是良好的缓释包膜剂;包膜尿素淋溶9次后尿素总溶出率为53.74%.比普通尿素总溶出率降低43.44个百分点.说明用机械活化醋酸酯淀粉包膜尿素后,对尿素态氯释放有明显的缓释放作用.
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