Archives of Pharmacal Research

, Volume 9, Issue 4, pp 193–199 | Cite as

Heparin release from hydrophobic polymers: (I)In vitro studies

  • Sung Ho Kim
  • Sung Wan Kim
Original Articles


The release of heparin from monolithic devices composed of different ratios of polyethylene oxide (PEO MW 20, 000) and hydrophobic polydimethylsiloxane or polyurethane was investigated. Water soluble PEO blended into the polymers provided a controlled release of heparin. The release rate of heparin could be controlled by varying the content of PEO. The heparin release rate from the devices increased as the content of PEO in the devices increased. The release mechanism may be associated with the creation of pore or domain through the devices following the swelling and the change in the physical structure of the polymer network. Hydrophobic polydimethylsiloxanes and polyurethanes containing PEO can provide and antithrombogenic material for prolonged release of heparin from a heparin blended system.


Heparin release Nonthrombogenic polymers Polyurethanes Silicone rubber 


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Copyright information

© 1986 1986

Authors and Affiliations

  • Sung Ho Kim
    • 1
  • Sung Wan Kim
    • 1
  1. 1.Department of PharmacueticsUniversity of UtahSalt Lake CityU.S.A.

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