Increased dissolution of disulfiram by dry milling with silica nanoparticles

气相二氧化硅 溶解 材料科学 粒径 差示扫描量热法 无定形固体 二硫仑 傅里叶变换红外光谱 化学工程 扫描电子显微镜 透射电子显微镜 分析化学(期刊) 化学 色谱法 有机化学 复合材料 纳米技术 热力学 物理 工程类 生物化学
作者
Guanghui Jing,Yue Zhong,Ling Zhang,Jingxin Gou,Xinchao Ji,Hao Huang,Yu Zhang,Yanjiao Wang,Haibing He,Xing Tang
出处
期刊:Drug Development and Industrial Pharmacy [Taylor & Francis]
卷期号:41 (8): 1328-1337 被引量:7
标识
DOI:10.3109/03639045.2014.949266
摘要

The purpose of this study was to find a suitable method to increase the dissolution of disulfiram (DSF) which is easily decomposed. The dissolution of DSF within 1 h was significantly increased from 37% to >90% by co-milling with Aerosil® 200 pharm (Aerosil) and the increased dissolution remained stable during long-term storage while there was no significant degradation of DSF. By monitoring the changes in particle size of the grinding mixture, a mosaic DSF-in-Aerosil structure was demonstrated. The core size of the mosaic DSF/Aerosil system was 3.625 µm. The particle size of DSF was reduced from 20.75 µm to ∼200 nm and the size of the mosaic DSF/Aerosil system (3.625∼7.956 µm) increased on increasing the drug-loading content. Differential scanning calorimetry and X-ray powder diffraction analysis confirmed the largely amorphous state of DSF in the mosaic drug/carrier system. Fourier transform infrared spectroscopy confirmed the presence of hydrogen bonding between DSF and Aerosil. Scanning electron microscopy and transmission electron microscopy verified the DSF-in-Aerosil relationship in the particle size determination at different size levels. The possible mechanisms of dry milling included the hypothesis that during impact and collision, DSF particles melted into the surface of Aerosil turning them into an amorphous state or they became inlayed into the interspaces of the Aerosil structure with a much smaller size.

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