EFFECTS OF PREPARATOIN CONDITIONS ON THE KINETIC PROPERTIES OF COMPLEX-RESINS

The effects of the reaction temperature, the crosslinking degree of the matrix, the pore-forming agent and the initial concentration of PVA on the kinetic properties of the complex-resins were investigated. The ion-exchange rate of the complex-resin for L-lysine chlorate was three-fold that of 001×8 resin and two-fold that of D61 resin.

萘普生钠伪麻黄碱缓释片的处方工艺研究及体外释放度考察

目的研究萘普生钠伪麻黄碱缓释片的制备方法,筛选出最佳处方制备工艺条件。方法采用正交设计,以HPMC K15M、微晶纤维素(PH101)和乳糖的用量及缓释片的硬度为因素进行试验,确定出最佳制备工艺条件;并对优化的试验结果进行验证,同时考察其体外释放效果。结果缓释层最佳工艺条件:HPMC K15M、PH101、乳糖的用量分别为150mg、40mg、60mg,压片硬度8kg;所制备的样品在1、2、4h的体外累积释放率分别为43.62±1.81%、68.81±1.52%、95.22±1.07%。结论制备的萘普生钠伪麻黄碱缓释片的缓释效果与设计值基本吻合,工艺重现性好,体外累积释放率符合要求。