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首页> 外文期刊>International Journal of Polymeric Materials >Synthesis, Characterization, and Release Dynamic of Acetylsalicylic Acid From Acetylsalicylic Acid/ Poly(vinylalcohol- co-ethylene) Membrane
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Synthesis, Characterization, and Release Dynamic of Acetylsalicylic Acid From Acetylsalicylic Acid/ Poly(vinylalcohol- co-ethylene) Membrane

机译:乙酰水杨酸/聚乙烯醇-乙烯共聚物膜中乙酰水杨酸的合成,表征及释放动力学

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摘要

A series of poly(vinylalcohol-co-ethylene)/acetylsalicylic acid blends (PEVA/AcSa) of different AcSa contents were prepared and characterized by the solubility test, differential scanning calorimetry, and scanning electron microscopic analyses. The results revealed that AcSa was perfectly soluble in PEVA at certain composition and uniformly distributed throughout the polymer matrix. The release dynamic of AcSa from PEVA/AcSa material was studied at body temperature during 92 h in which the influence of AcSa initially incorporated in PEVA, the pH of media, the membrane thickness, and the stability of AcSa release rate on the release dynamic were detailed.
机译:制备了一系列不同AcSa含量的聚乙烯醇/乙烯/乙酰水杨酸共混物(PEVA / AcSa),并通过溶解度测试,差示扫描量热法和扫描电子显微镜分析对其进行了表征。结果表明,AcSa在某些组成下可完美溶于PEVA,并均匀分布在整个聚合物基质中。研究了在92h的人体温度下AcSa从PEVA / AcSa材料中的释放动力学,其中最初掺入PEVA中的AcSa,介质的pH值,膜厚度以及AcSa释放速率的稳定性对释放动力学的影响为:详细。

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