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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Producing xylan/Eudragit~R SlOO-based microparticles by chemical and physico-mechanical approaches as carriers for 5-aminosalicylic acid
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Producing xylan/Eudragit~R SlOO-based microparticles by chemical and physico-mechanical approaches as carriers for 5-aminosalicylic acid

机译:通过化学和物理机械方法生产木聚糖/ Eudragit〜R SlOO基微粒作为5-氨基水杨酸的载体

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摘要

Xylan is a biopolymer found in a variety of cell wall plants. Eudragit~R S-100 (ES100), a pH-dependent polymer, is used as a coating material in gastroresistant delivery systems. In this study, microparticles based on both polymers were produced by interfacial cross-linking polymerisation and/or spray-drying technique in order to investigate feasibility and stability of the systems. Size and morphology of the microparticles were characterised by optical and SEM while FT-IR, thermal analysis (TG/DTA), and X-ray diffraction (XRD) evaluated the drug-polymer interactions and the thermal behaviour of the systems. FT-IR confirmed the absence of chemical interaction between the polymers. TG/DTA analysis showed a higher stability for spray-dried microparticles and XRD data proved the amorphous feature of both carriers. The results reveal that xylan/ES100 microparticles can be produced by chemical or physico-mechanical ways, the latter being the best option due to the lack of toxic cross-linking agents and easy scale-up.
机译:木聚糖是在多种细胞壁植物中发现的生物聚合物。 Eudragit R S-100(ES100)是一种pH依赖性聚合物,在耐胃液输送系统中用作涂料。在这项研究中,通过界面交联聚合和/或喷雾干燥技术生产了基于两种聚合物的微粒,以研究该系统的可行性和稳定性。通过光学和SEM表征了微粒的尺寸和形态,而FT-IR,热分析(TG / DTA)和X射线衍射(XRD)则评估了药物-聚合物相互作用和系统的热行为。 FT-IR证实了聚合物之间不存在化学相互作用。 TG / DTA分析表明,喷雾干燥的微粒具有更高的稳定性,XRD数据证明了两种载体均具有非晶态特征。结果表明,木聚糖/ ES100微粒可以通过化学或物理机械方法生产,由于缺乏有毒的交联剂且易于放大,后者是最佳选择。

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