Characteristic and controlled release of anticancer drug loaded poly (D,L-lactide) microparticles prepared by spray drying technique

Y. J. Fu, F. L. Mi, T. B. Wong, S. S. Shyu

研究成果: 雜誌貢獻文章同行評審

45 引文 斯高帕斯(Scopus)

摘要

Anticancer drug release from polylactic acid microspheres prepared by the spray-drying process was studied. Several process parameters and properties of the polymer solution have been investigated. Normal size distributions with diameters ranging from 5-10 μm were obtained by the spray drying technique. The yield of microspheres recovered depended on polymer solution and process conditions employed. Results show that the yield of microspheres could reach 50%, and the experimental drug loading approached the theoretical drug loading. Scanning electron microscopy indicated that microspheres were composed of a dense thin skin layer and porous core. The magnitude of this effect depended on the inlet temperature, feed polymer concentration and airflow rate. Increasing inlet temperature and polymer concentration resulted in an intact particle shape and a slower drug dissolution rate. The in-vitro release of anticancer drug from microspheres was sustained over 7 days. The drug release behaviour depended on inlet temperature, air flow rate, PLA concentration and drug loading. The anticancer drug release rate from polylactic acid microspheres prepared by the spray-drying method was depressed, and the long-acting release could be achieved by appropriate operating parameters.

原文英語
頁(從 - 到)733-747
頁數15
期刊Journal of Microencapsulation
18
發行號6
DOIs
出版狀態已發佈 - 2001
對外發佈

ASJC Scopus subject areas

  • 化學(雜項)
  • 藥學科學
  • 化學工程 (全部)
  • 藥理

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