Ionic liquid-assisted cellulose coating of chitosan hydrogel beads and their application as drug carriers

Sci Rep. 2020 Aug 17;10(1):13905. doi: 10.1038/s41598-020-70900-7.

Abstract

The present study proposes a simple yet effective method of cellulose coating onto chitosan (CS) hydrogel beads and application thereof as drug carriers. The beads were coated with cellulose dissolved in 1-ethyl-3-methylimidazolium acetate, an ionic liquid (IL) via a one-pot one-step process. Water molecules present in the CS beads diffused outward upon contact with the cellulose-IL mixture and acted as an anti-solvent. This allowed the surface of the beads to be coated with the regenerated cellulose. The regenerated cellulose was characterized by FE-SEM, FT-IR, and XRD analyses. To test potential application of the cellulose-coated CS hydrogel beads as a drug carrier, verapamil hydrochloride (VRP), used as a model drug, was impregnated into the beads. When the VRP-impregnated beads were immersed in the simulated gastric fluid (pH 1.2), the VRP was released in an almost ideal linear pattern. This easily fabricated cellulose-coated CS beads showed the possibility for application as carriers for drug release control.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cellulose / chemistry*
  • Cellulose / ultrastructure
  • Chitosan / chemistry*
  • Drug Carriers / chemistry*
  • Drug Liberation
  • Hydrogels / chemistry*
  • Ionic Liquids / chemistry*
  • Microspheres*
  • Spectroscopy, Fourier Transform Infrared
  • Verapamil / pharmacology
  • X-Ray Diffraction

Substances

  • Drug Carriers
  • Hydrogels
  • Ionic Liquids
  • Cellulose
  • Chitosan
  • Verapamil