化工进展2017，Vol.36Issue(3)：1033-1040,8.DOI:10.16085/j.issn.1000-6613.2017.03.035
毒死蜱/壳聚糖改性凹凸棒土/海藻酸钠微球的制备与缓释性能
Preparation and slow-release performance of chlorpyrifos/chitosan modified attapulgite/sodium alginate microspheres
摘要
Abstract
Chitosan modified attapulgite(CTs-ATP)was prepared by grafting method. Chlorpyrifos/ CTs-ATP/sodium alginate microspheres were prepared by extrusion dripping method. The modified attapulgite was characterized by FTIR,TG and XRD. The effects of modified attapulgite on the loading content of chlorpyrifos(LC),encapsulation efficiency(EE),swelling ratio,and slow-release kinetic were also systematically investigated. The results showed that the loaded chlorpyrifos was in crystalline form in microspheres. CTs-ATP composite microphere has higher LC and EE than acid modified ATP(AC-ATP)composite microphere. The swelling ratios and release rates of microspheres were decreased with adding modified ATP. The CTs-ATP composite microphere exhibits better slow-release and restraining the swelling properties than AC-ATP composite microphere. Their releasing behaviors could be characterized by HIGUCHI equation.关键词
凹凸棒土/壳聚糖/毒死蜱/海藻酸钠/缓释Key words
attapulgite/chitosan/chlorpyrifos/sodium alginate/slow-release分类
化学化工引用本文复制引用
陈铧耀,周新华,周红军,杨晓红,徐华,戴修纯..毒死蜱/壳聚糖改性凹凸棒土/海藻酸钠微球的制备与缓释性能[J].化工进展,2017,36(3):1033-1040,8.基金项目
国家自然科学基金(21576303)、广东省科技计划(2014A020208126、2015A020209197)、海珠区科技计划(2014-cg-29)及花都区科技计划(HD15CXY002)项目. （21576303）
