一种淀粉基互穿网络型缓释肥包膜材料的制备及性能研究  

Preparation of an amylaceous IPN-resin and the application to slow release fertilizer

作　　者：徐浩龙[1] 党民团[1] 卢国锋[1] 

机构地区：[1]渭南师范学院化学化工系,陕西渭南714000

出　　处：《应用化工》2011年第5期811-813,共3页Applied Chemical Industry

基　　金：陕西省教育厅专项科研项目(2010JK544);渭南师范学院专项科研项目(07YKZ03110YKF011)

摘　　要：采用水溶液聚合法,以甲醛为交联剂,通过淀粉与甘油、100-37H型聚乙烯醇(PVA)多元共聚、交联,制备了一种生物降解性好的互穿网络型缓释肥包膜材料。结果显示,淀粉、甘油、甲醛和PVA的最佳质量分数比率为:20∶4.5∶6.0∶12;包膜材料所制缓释尿素缓释周期达60～80 d,符合GB/T23348—2009规定的缓释效果,其释放机制可能为溶胀-扩散释放机理。One biodegradable plastic film was prepared from amylum,trihydroxypropane,polyvinyl alcohol and formaldehyde by the method of copolymerization and cross-linking.The results showed the optimal mass ratio of four amylum,trihydroxypropane,polyvinyl alcohol and formaldehyde was 20∶4.5∶6.0∶12,slow-release time of urea was 60～80 d,which met the technological standards of GB/T23348—2009.The release mechanism of the fertilizer was supposed to be dissolving/expanding-diffusion by urea dissolution curve.

关 键 词：生物可降解 淀粉 尿素 缓释肥 

分 类 号：TQ321[化学工程—合成树脂塑料工业]