中国塑料 ›› 2022, Vol. 36 ›› Issue (7): 61-67.DOI: 10.19491/j.issn.1001-9278.2022.07.009

• 材料与性能 • 上一篇    下一篇

静电喷雾法制备聚乳酸/布洛芬微球及其性能研究

沈雪梅(), 朱小龙, 胡燕超, 宋任远, 张现峰, 李席()   

  1. 蚌埠学院,硅基新材料安徽省工程技术研究中心,功能粉体材料蚌埠市实验室,安徽 蚌埠 233030
  • 收稿日期:2022-01-26 出版日期:2022-07-26 发布日期:2022-07-20
  • 通讯作者: 李席(1989—),男,副教授,主要从事高分子复合材料设计及理论研究,lixivip89@163.com
    E-mail:s18255196410@163.com;lixivip89@163.com
  • 作者简介:沈雪梅(1992—),女,助教,主要从事功能高分子材料的制备及研究,s18255196410@163.com
  • 基金资助:
    安徽省自然科学基金(2008085ME174);安徽省高校自然科学研究重点项目(KJ2019A0851);蚌埠学院校级自然科学研究项目(2021ZR05);蚌埠学院产学研合作项目(00010060)

Fabrication and properties of poly(lactic acid))/ibuprofen microspheres through electrostatic spray method

SHEN Xuemei(), ZHU Xiaolong, HU Yanchao, SONG Renyuan, ZHANG Xianfeng, LI Xi()   

  1. Functional Powder Material Laboratory of Bengbu City,Engineering Technology Research Center of Silicon?based Materials,Bengbu University,Bengbu 233030,China
  • Received:2022-01-26 Online:2022-07-26 Published:2022-07-20
  • Contact: LI Xi E-mail:s18255196410@163.com;lixivip89@163.com

摘要:

采用静电喷雾技术,以聚乳酸(PLA)为骨架载体材料,布洛芬(IBU)为模型药物,成功制备出PLA载IBU微球,利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、差示扫描量热仪(DSC)、傅里叶变换红外光谱仪(FTIR)、热失重分析仪(TG)和紫外可见分光光度计分析了微球形貌、结构和性能。结果表明,PLA/IBU微球呈表面多孔的无定形结构,分散性较好,IBU以分子或无规则状态负载在PLA中,化学结构未有变化,稳定性较纯IBU有所提高。在体外缓释测试中,PLA/IBU微球相比较纯IBU具有良好的缓释效果,随着投药量的增加,IBU的释放速率和累计释放量逐渐提高,含16 %IBU的PLA微球在48 h内累计释放量可达52 %。静电喷雾法制备的PLA/IBU微球有望提高IBU的生物利用度和溶出率,在生物医药领域具有潜在的应用前景。

关键词: 静电喷雾, 聚乳酸, 布洛芬, 无定形, 缓释性能

Abstract:

The ibuprofen (IBU)?loaded poly(lactic acid)(PLA) microspheres were prepared through electrostatic spray using PLA as a skeleton carrier material and IBU as a model drug, and their morphology, microstructure, and properties were investigated using scanning electron microscope, X ray diffractometer, differential scanning calorimeter, infrared spectrophotometer, thermogravimetric analyzer, and UV?Vis spectrophotometer. The obtained PLA/IBU microspheres showed a porous and amorphous structure with good dispersibility. IBU was loaded in PLA in a molecular or random state and without any changes in chemical structure. Their stability was higher than that of pure IBU. Based on the in vitro controlled release test, The PLA/IBU microspheres exhibited a better effect for controlled release than pure IBU. The release rate and cumulative release amount of IBU from the microspheres increased with an increase in the dosage of IBU. The cumulative release amount of IBU reached 52 % at 48 h when the IBU content was 16 wt%. With the bioavailability and dissolution rate of IBU, the PLA/IBU microspheres developed by this work exhibit great application potential in the biomedicine field.

Key words: electrostatic spray, poly(lactic acid), ibuprofen, amorphousness, release property

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