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Controlled Release of Biologically Active Agents

  • Seymour Yolles
Part of the Polymer Science and Technology book series (POLS, volume 8)

Abstract

The development of injectable systems for sustained delivery of drugs at a controlled rate has been the object of various publications. In 1946, a patent [1] was issued claiming pellets consisting of dispersions of a desiccated hormone in waxy media as a new system for a slow and prolonged release of active materials. Substitution of the waxy media as matrices by silicones for fertility control was reported by other investigators [2, 3, 4, 5]. A recent innovation is the use of biodegradable polymers such as polylactic acid (PLA), which will also assure a complete delivery of the drug [6].

Keywords

Release Rate Polylactic Acid Control Release Delivery Rate Cumulative Amount 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1975

Authors and Affiliations

  • Seymour Yolles
    • 1
  1. 1.Department of ChemistryUniversity of DelawareNewarkUSA

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