首页    期刊浏览 2024年11月07日 星期四
登录注册

文章基本信息

  • 标题:Electrodeposition of Ginseng/Polyaniline Encapsulated Poly(lactic-co-glycolic Acid) Microcapsule Coating on Stainless Steel 316L at Different Deposition Parameters
  • 本地全文:下载
  • 作者:Siti Khadijah Lukman ; Rania Hussein Al-Ashwal ; Naznin Sultana
  • 期刊名称:Chemical and Pharmaceutical Bulletin
  • 印刷版ISSN:0009-2363
  • 电子版ISSN:1347-5223
  • 出版年度:2019
  • 卷号:67
  • 期号:5
  • 页码:445-451
  • DOI:10.1248/cpb.c18-00847
  • 出版社:The Pharmaceutical Society of Japan
  • 摘要:

    Electrodeposition is commonly used to deposit ceramic or metal coating on metallic implants. Its utilization in depositing polymer microcapsule coating is currently being explored. However, there is no encapsulation of drug within polymer microcapsules that will enhance its chemical and biological properties. Therefore, in this study, ginseng which is known for its multiple therapeutic effects was encapsulated inside biodegradable poly(lactic- co -glycolic acid) (PLGA) microcapsules to be coated on pre-treated medical grade stainless steel 316L (SS316L) using an electrodeposition technique. Polyaniline (PANI) was incorporated within the microcapsules to drive the formation of microcapsule coating. The electrodeposition was performed at different current densities (1–3 mA) and different deposition times (20–60 s). The chemical composition, morphology and wettability of the microcapsule coatings were characterized through attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and contact angle analyses. The changes of electrolyte colors, before and after the electrodeposition were also observed. The addition of PANI has formed low wettability and uniform microcapsule coatings at 2 mA current density and 40 s deposition time. Reduction in the current density or deposition time caused less attachment of microcapsule coatings with high wettability records. While prolonging either one parameter has led to debris formation and melted microcapsules with non-uniform wettability measurements. The color of electrolytes was also changed from milky white to dark yellow when the current density and deposition time increased. The application of tolerable current density and deposition time is crucial to obtain a uniform microcapsule coating, projecting a controlled release of encapsulated drug.

  • 关键词:electrodeposition;microcapsule coating;poly(lactic-co-glycolic acid);Panax ginseng;polyaniline
国家哲学社会科学文献中心版权所有