Biomaterial immobilization on polyurethane films by XeCl excimer laser processing
- Zusammenfassung The surface chemical modification of polyurethane (PU) films was performed by an UV laser-induced chemical reaction in a polysaccharide solution. This process may be applicable as hydrophilic packaging of implantable medical devices and in vivo sensors. When a PU film in contact with an aqueous alginic acid (AAC) solution was irradiated with a XeCl laser, the PU film turned hydrophilic. Contact angles of water on the film were reduced from 110° to 60°. Since light absorption of the AAC solution at 308 nm was negligibly small, reactive sites were generated solely on the PU surface. There, AAC could be immobilized by chemical bonds thus allowing for a nanometer-scaled grafting of this biomolecule. The mechanism was investigated by surface analyses with Fourier-transform infrared spectroscopy (FT-IR), dye staining, ultraviolet-visible (UV-VIS) spectroscopy, and scanning electron microscopy (SEM) techniques. A one-photon photochemical process could beidentified.
Autor*innen: | Jörg KrügerORCiD, Wolfgang Kautek, H. Niino |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Applied physics A |
Jahr der Erstveröffentlichung: | 2001 |
Verlag: | Springer |
Verlagsort: | Berlin |
Jahrgang/Band: | 72 |
Ausgabe/Heft: | 1 |
Erste Seite: | 53 |
Letzte Seite: | 57 |
DOI: | 10.1007/s003390000617 |
ISSN: | 0947-8396 |
Verfügbarkeit des Dokuments: | Weder Datei noch physisches Exemplar vorhanden ("No Access") |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 05.02.2001 |