| Journal: | Superficies y vacío |
| Database: | PERIÓDICA |
| System number: | 000367971 |
| ISSN: | 1665-3521 |
| Authors: | De Jesús, C1 Cruz, G. J1 Olayo, M. G1 Gómez, L M2 López Gracia, O. G1 García Rosales G3 Ramírez Santiago A4 Ríos L. C5 |
| Institutions: | 1Instituto Nacional de Investigaciones Nucleares, Departamento de Física, México, Distrito Federal. México 2Universidad Autónoma del Estado de México, Facultad de Química, Toluca, Estado de México. México 3Instituto Tecnológico de Toluca, Metepec, Estado de México. México 4Universidad Autónoma Metropolitana, Departamento de Sistemas Biológicos, Xochimilco, Distrito Federal. México 5Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Departamento de Neuroquímica, México, Distrito Federal. México |
| Year: | 2012 |
| Season: | Sep |
| Volumen: | 25 |
| Number: | 3 |
| Pages: | 157-160 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Plasma polypyrrole was synthesized on stainless steel and Nitinol (Ni-Ti alloy) substrates in order to obtain polymer-metal compounds with high adhesion. The work has the objective to cover metal surfaces with polymers to reduce the contact of metallic surfaces with biological tissues in human body implants. The metal samples were subjected to RF glow discharges with water vapor and argon to clean, oxidize and erode before the polymer coatings. After that, the synthesis of polymers was carried out by glow discharges during 10 min at 13.56 MHz, 10-1 mbar and 20 W. The results showed that the coating is carried out in consecutive thin layers with the morphology of the metal at the interface. The coated samples were immersed in phosphate solutions (PBS) pH = 7.4 to simulate the conditions of salt concentration in human arteries and veins. The PPy coated metal substrates have rough morphology with resistance to PBS solutions. However, Nitinol samples needed Ar besides water discharges to clean, oxidize and erode |
| Disciplines: | Ingeniería, Medicina |
| Keyword: | Ingeniería de materiales, Cirugía, Sistema cardiovascular, Stent, Acero inoxidable, Recubrimientos, Polímeros, Nitinol, Polipirrol |
| Keyword: | Engineering, Medicine, Materials engineering, Cardiovascular system, Surgery, Stent, Stainless steel, Coatings, Polymers, Nitinol, Polypyrrole |
| Full text: | Texto completo (Ver HTML) |
