首页> 外文期刊>Journal of Polymers and the Environment >Biodegradable Chitosan-g-Poly(methacrylamide) Microspheres for Controlled Release of Hypertensive Drug
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Biodegradable Chitosan-g-Poly(methacrylamide) Microspheres for Controlled Release of Hypertensive Drug

机译:可生物降解的壳聚糖-g-聚(甲基丙烯酰胺)微球用于高血压药物的控释

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摘要

Chitosan-g-poly(methacrylamide) (CS-g-PMAAm) was synthesized by redox polymerization. The synthesized graft copolymers were used to prepare microspheres (MS) by water/oil (W/O) emulsion technique and cross-linked with glutaraldehyde (GA). Developed microspheres were encapsulated using enalapril maleate (ENAM) as a model drug (hypertension) and characterized by fourier transform infrared spectroscopy, differential scanning calorimetry and scanning electron microscopy. The physico-chemical properties of the microspheres were studied by calculating drug entrapment efficiency, and drug release kinetics. % of encapsulation efficiency (% EE) increased with increase in drug loading and methacrylamide (MAAm) content. The minimum % EE (65.2 ± 1.6) was observed in case of microsphere containing 40 % MAAm, 5 % ENAM and 10 mL glutaraldehyde. The release profiles indicate that formulation containing highest (10 mL) crosslinking agent microspheres has the slow release.
机译:通过氧化还原聚合反应合成了壳聚糖-g-聚(甲基丙烯酰胺)(CS-g-PMAAm)。合成的接枝共聚物用于通过水/油(W / O)乳液技术制备微球(MS),并与戊二醛(GA)交联。使用马来酸依那普利(ENAM)作为模型药物(高血压)封装开发的微球,并通过傅立叶变换红外光谱,差示扫描量热法和扫描电子显微镜对微球进行表征。通过计算药物截留效率和药物释放动力学,研究了微球的理化性质。封装效率的百分比(EE)随着药物载量和甲基丙烯酰胺(MAAm)含量的增加而增加。如果微球含有40%MAAm,5%ENAM和10 mL戊二醛,则观察到最低EE(65.2±1.6)%。释放曲线表明,含有最高(10 mL)交联剂微球的制剂释放缓慢。

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