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Drug delivery system based on poly(ether-block-amide) and acrylic acid for controlled release of vancomycin

机译:基于聚(醚嵌段 - 酰胺)和丙烯酸的药物递送系统,用于控制释放万古霉素

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摘要

Poly(ether-block-amide) (PEBA) films were grafted with acrylic acid (AAc) by gamma radiation, using the oxidative pre-irradiation technique. The effect of dose, monomer concentration, temperature, and reaction time on the graft percentage of AAc onto PEBA was studied. The modified material PEBA-g-AAc was characterized by Fourier infrared spectroscopy (FTIR), scanning electron microscopy, and water contact angle. It was found that PEBA films did not suffer degradation at low doses (<30kGy) during the grafting process. Additionally, PEBA-g-AAc was proved as drug delivery system using vancomycin as drug model. The PEBA-g-AAc with 39 and 98% of AAc loaded 63 and 98 mgg(-1), respectively. The release profiles showed a sustained delivery by 48 h with a partial retention of drug, which depends of grafting percentage. The microbiological tests showed that PEBA-g-AAc was able to inhibit the growing of Staphylococcus aureus in three consecutive challenges. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45745.
机译:使用氧化预照射技术将聚(醚嵌段 - 酰胺)(PEBA)膜用丙烯酸(AAC)接枝丙烯酸(AAC)。研究了剂量,单体浓度,温度和反应时间对PEBA的AAC接枝百分比的影响。改性材料PEBA-G-AAC的特征在于傅里叶红外光谱(FTIR),扫描电子显微镜和水接触角。发现PEBA薄膜在嫁接过程中在低剂量(<30kgy)下没有降解。此外,通过作为药物模型的Vancomycin被证明PEBA-G-AAC作为药物递送系统。 PEBA-G-AAC分别具有39和98%的AAC负载63和98MGG(-1)。释放曲线显示48小时的持续递送,部分保留药物,这取决于嫁接百分比。微生物检验表明,PEBA-G-AAC能够在连续三个挑战中抑制金黄色葡萄球菌的生长。 (c)2017 Wiley期刊,Inc.J.Phill。聚合物。 SCI。 2018,135,45745。

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