| Title | Constructing thromboresistant surface on biomedical stainless steel via layer-by-layer deposition anticoagulant |
| Publication Type | Journal Article |
| 2003 |
| Authors | Tan, Q, Ji, J, Barbosa, MA, Fonseca, C, Shen, J |
| Journal | BiomaterialsBiomaterials |
| Volume | 24 |
| Issue | 25 |
| Pagination | 4699 - 4705 |
| Date Published | 2003/// |
| 01429612 (ISSN) |
| 316L stainless steel, Adhesion, Adsorption, anticoagulant agent, Anticoagulants, aqueous solution, article, Biocompatibility, biomaterial, Biomaterials, blood clotting time, Blood Platelets, Blood-compatibility, buffer, Coated Materials, Biocompatible, coating, Coatings, Contact angle, controlled study, Deposition, device, electricity, Electrochemical impedance spectroscopy, electrochemistry, Electrostatics, heparin, human, human cell, Humans, implant, Layer-by-layer, material coating, materials testing, Multilayers, Organic polymers, pH, Platelet Adhesiveness, Polyethyleneimine, priority journal, reflection adsorption spectroscopy, Self assembly, Spectroscopy, Stainless steel, Surface Properties, surface property, Surfaces, thrombocyte adhesion, Thromboresistant surfaces, trometamol, X ray photoelectron spectroscopy |
| Multilayer films consisting of polyethylenimine (PEI) and heparin were successfully prepared on biomedical 316L stainless steel surface via electrostatic self-assembly (ESA) of the PEI and heparin. The process of ESA of PEI/heparin was monitored by static contact angle, electrochemical impedance spectroscopy (EIS), reflection adsorption spectroscopy and X-ray photoelectron spectroscopy data. The contact angle and EIS data revealed that the multilayer coating was stable in Tris-HCl (pH 7.35) buffer solution for 21 days. The static platelet adhesion and static clotting time experiments indicated that the PEI/heparin-deposited stainless steel could resist the platelet adhesion and prolong the static clotting time effectively. Such an easy processing and shape-independent method may have good potential for surface modification of cardiovascular devices. © 2003 Elsevier Ltd. All rights reserved. |
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