Ionic Liquid Derived Blood Compatible Composite Membranes For Kidney Dialysis

Murugesan, Saravanababu
Mousa, Shaker
Vijayaraghavan, Aravind
Ajayan, Pulickel M.
Linhardt, Robert J.
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Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
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Ionic Liquid Derived Blood Compatible Composite Membranes For Kidney Dialysis, S. Murugesan, S. Mousa, A. Vijayaraghavan, P. M. Ajayan and R. J. Linhardt, Journal of Biomedical Materials Research: Part B - Applied Biomaterials, 79B, 298-304, 2006.
A novel heparin- and cellulose-based biocomposite is fabricated by exploiting the enhanced dissolution of polysaccharides in room temperature ionic liquids (RTILs). This represents the first reported example of using a new class of solvents, RTILs, to fabricate blood-compatible biomaterials. Using this approach, it is possible to fabricate the biomaterials in any form, such as films or membranes, fibers (nanometer- or micron-sized), spheres (nanometer- or micron-sized), or any shape using templates. In this work, we have evaluated a membrane film of this composite. Surface morphological studies on this biocomposite film showed the uniformly distributed presence of heparin throughout the cellulose matrix. Activated partial thromboplastin time and thromboelastography demonstrate that this composite is superior to other existing heparinized biomaterials in preventing clot formation in human blood plasma and in human whole blood. Membranes made of these composites allow the passage of urea while retaining albumin, representing a promising blood-compatible biomaterial for renal dialysis, with a possibility of eliminating the systemic administration of heparin to the patients undergoing renal dialysis.
Journal of Biomedical Materials Research: Part B - Applied Biomaterials, 79B, 298-304
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The Linhardt Research Labs.
The Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)
The Linhardt Research Labs Online Collection
Rensselaer Polytechnic Institute, Troy, NY
Journal of Biomedical Materials Research - Part B Applied Biomaterials
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