壳聚糖-固态分散体载药微球的制备及性能研究

来源 :功能材料 | 被引量 : 0次 | 上传用户:lucylxh
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
首先采用不同分子量的壳聚糖通过乳化-化学交联法制备了4种不同的壳聚糖载药微球。通过对微球的粒径、溶胀率、载药率、包封率等指标检测以及缓释性能的研究,发现分子量为240kDa的壳聚糖制备的载药微球缓释效果明显,载药率、包封率均较高,综合性能优于其它分子量壳聚糖制备的微球。利用该分子量壳聚糖包埋固态分散体制备了壳聚糖-固态分散体载药微球,改善了药物的溶解性并具有药物缓释作用。因此,壳聚糖-固态分散体载药微球是一种理想的药物缓释体系,可以用于包埋溶解性差,生物半衰期短,对胃肠刺激性强的药物。
其他文献
The homogeneous G eS2-In2 S3-Csl glassy samples were prepared by conventional melt-quenching method.When the molar ratio of In2 S3 to CsI remains 1, the non-cry
First-principle calculations based on density functional theory were used to study the adsorption of atomic sulfur and carbon on the Mg(0001) surface in a wide
During the crystal growth of Nd, Cr∶GSGG by Czochralski method, in some cases eutectic reaction occurred in the nether region of the crystal, and the boule was
The biocompatibility of the hydroxyapatite/high density polyethtlene(HA/HDPE) nanocomposites synthetic auditory ossicle was evaluated, the percentage of S-perio
In-situ analysis for SiC bulk single crystal growth was reported using vertical X-ray diffractometer system. A furnace for SiC sublimation growth combined with
AZ31 alloy with minor RE addition was investigated. The material was homogenized, hot-rolled and annealed. Optical microscopy, scanning electron microscopy and
The lattice parameter change of Nd∶GGG crystal was studied by X-ray powder diffraction and the least square fitting method. The results indicate that the latti
The controlling effects of axial magnetic fields (AMFs) on anode activities are critical for successful interruptions of high-current vacuum arcs. In this paper,