首页> 外文期刊>Journal of Applied Polymer Science >Controlled Drug Delivery Studies of Biological Macromolecules: Sodium Alginate and Lignosulphonic Acid Films
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Controlled Drug Delivery Studies of Biological Macromolecules: Sodium Alginate and Lignosulphonic Acid Films

机译:生物大分子的受控药物递送研究:海藻酸钠和木质素磺酸膜

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摘要

The ciprofloxacin (CPX)-loaded blends made of sodium alginate and lignosulfonic acid (LS) were prepared by solution casting method in the ratio of 80/20. The blends were crosslinked for different intervals of time to control the drug release. The drug release was investigated for 24 hours in different pH medium (1, 4, 7, and 9). It was confirmed that drug release is controlled by diffusion through the polymer matrix followed by the erosion of the polymer. The pH of the surrounding medium influences the drug solubility, swelling, and degradation rate of the polymer and therefore the overall drug release process. The blend shows minimal drug release at pH 1 and 9, whereas moderate release at pH 4, but rapid release at pH 7. Further FTIR, XRD, and SEM characterization are carried, to confirm the chemical-interaction, crystallization effects, and compatibility between the blend matrixes.
机译:通过溶液流延法以80/20的比例制备由藻酸钠和木质素磺酸(LS)制成的负载环丙沙星(CPX)的共混物。将共混物交联不同的时间间隔以控制药物释放。在不同的pH介质(1、4、7和9)中研究了24小时的药物释放。证实了药物释放是通过在聚合物基质中扩散然后对聚合物进行侵蚀来控制的。周围介质的pH影响聚合物的药物溶解度,溶胀和降解速率,从而影响整个药物释放过程。共混物在pH 1和9时显示出最小的药物释放,而在pH 4时显示中度释放,但在pH 7时迅速释放。还进行了FTIR,XRD和SEM表征,以确认化学相互作用,结晶作用以及两者之间的相容性混合矩阵。

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