Barbucci R, Benvenuti M, Dal Maso G, Ferruti P, Tempesti F, Lemm WG. A material (PUPA) presenting both the properties of polyurethanes and the capacity of adsorbing a high quantity of heparin.
Biomaterials 1987;
8:306-7. [PMID:
3663808 DOI:
10.1016/0142-9612(87)90120-7]
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Abstract
Polyurethanes are widely used for biomedical applications, but there is still a constant search for improved blood-compatible materials. We studied a material (PUPA) obtained by the interconnection between a poly(amido-amine), N2LL, capable of forming stable complexes with heparin and a commercial polyurethane, Pellethane 2363-80AE, using hexamethylenediisocyanate as the crosslinking agent. The amount of absorbed heparin (evaluated by biological tests) was generally much higher than that found on the poly(amido-amine) surface-grafted polyurethane.
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