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AAPS PharmSciTech

, 20:40 | Cite as

Convective Drying Kinetics of Polymer Strip Films Loaded with a BCS Class II Drug

  • A. T. Naseri
  • E. Cetindag
  • J. Forte
  • E. Bilgili
  • Rajesh N. DavéEmail author
Research Article
  • 31 Downloads

Abstract

Polymer strip film is a promising dosage form for oral delivery of poorly water-soluble drugs. Drying is an important step in the production of polymer strip films with significant effects on critical quality attributes (CQAs). In this study, a custom-made batch drying setup was used to study convective drying kinetics of wet polymer strip films loaded with dry-coated micronized griseofulvin (GF) at various drying conditions. A rate-based semi-empirical model was formulated and parameters were estimated by integral method of analysis using a coupled optimizer–ordinary differential equation solver. Despite its simplicity with three parameters, the model could fit the experimental data very well for all drying conditions, which enabled us to examine the effects of air velocity, temperature, and initial wet film thickness on drying kinetics quantitatively. The modeling results clearly delineate a drying mechanism with constant-rate and falling-rate periods. One set of kinetic parameter estimates reasonably predicted the drying kinetics for two different wet film thicknesses in the selected process conditions, which demonstrates the predictive capability of the model. After reporting the limitations of the semi-empirical model, upon future modification and refinement, its potential use in drying process development and process control was highlighted.

KEY WORDS

drying kinetics polymer strip film poorly water-soluble drug dry coating 

Notes

Acknowledgments

The authors thank Dr. Chettiannan Ravikumar and Dr. Gautam Setia for their contributions in building the drying setup.

Funding

Financial support was provided by the National Science Foundation (NSF) in part through the ERC (EEC-0540855) award and from the National Institute of Health (NIH) NIH-U01 in part through award U01FD005521.

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Copyright information

© American Association of Pharmaceutical Scientists 2019

Authors and Affiliations

  • A. T. Naseri
    • 1
  • E. Cetindag
    • 1
  • J. Forte
    • 1
  • E. Bilgili
    • 1
  • Rajesh N. Davé
    • 1
    Email author
  1. 1.New Jersey Center for Engineered Particulates and Department of Chemical and Materials EngineeringNew Jersey Institute of TechnologyNewarkUSA

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