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Cellulose

, Volume 14, Issue 1, pp 49–64 | Cite as

Cellulose esters in drug delivery

  • Kevin J. Edgar
Article

Abstract

Cellulose esters have played a vital role in the development of modern drug delivery technology. They possess properties that are not only well-suited to the needs of pharmaceutical applications, but that enable construction of drug delivery systems that address critical patient needs. These properties include very low toxicity, endogenous and/or dietary decomposition products, stability, high water permeability, high T g, film strength, compatibility with a wide range of actives, and ability to form micro- and nanoparticles. This suite of properties has enabled the creation of a wide range of drug delivery systems employing cellulose esters as key ingredients. The following is a review of the most important types of these systems, and of the critical roles played by cellulose esters in making them work, focusing on more recent developments.

Keywords

Amorphous matrix Cellulose acetate Cellulose acetate butyrate Cellulose acetate phthalate Cellulose acetate propionate Cellulose ester Controlled release Drug delivery Enteric coating Matrix release Osmotic pump Zero-order release 

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Notes

Acknowledgements

My personal thanks go to Andy Singleton and Jinghua Yuan of Eastman for their help with the table of properties of cellulose esters used in current drug delivery applications.

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Eastman Chemical CompanyKingsportUSA

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