TY - JOUR
T1 - Physicochemical modifications accompanying UV laser induced surface structures on poly(ethylene terephthalate) and their effect on adhesion of mesenchymal cells
AU - Rebollar, Esther
AU - Pérez, Susana
AU - Hernández, Margarita
AU - Domingo, Concepción
AU - Martín, Margarita
AU - Ezquerra, Tiberio A.
AU - García-Ruiz, Josefa P.
AU - Castillejo, Marta
PY - 2014/7/30
Y1 - 2014/7/30
N2 - This work reports on the formation of different types of structures on the surface of polymer films upon UV laser irradiation. Poly(ethylene terephthalate) was irradiated with nanosecond UV pulses at 193 and 266 nm. The polarization of the laser beam and the irradiation angle of incidence were varied, giving rise to laser induced surface structures with different shapes and periodicities. The irradiated surfaces were topographically characterized by atomic force microscopy and the chemical modifications induced by laser irradiation were inspected via micro-Raman and fluorescence spectroscopies. Contact angle measurements were performed with different liquids, and the results evaluated in terms of surface free energy components. Finally, in order to test the influence of surface properties for a potential application, the modified surfaces were used for mesenchymal stem cell culture assays and the effect of nanostructure and surface chemistry on cell adhesion was evaluated.
AB - This work reports on the formation of different types of structures on the surface of polymer films upon UV laser irradiation. Poly(ethylene terephthalate) was irradiated with nanosecond UV pulses at 193 and 266 nm. The polarization of the laser beam and the irradiation angle of incidence were varied, giving rise to laser induced surface structures with different shapes and periodicities. The irradiated surfaces were topographically characterized by atomic force microscopy and the chemical modifications induced by laser irradiation were inspected via micro-Raman and fluorescence spectroscopies. Contact angle measurements were performed with different liquids, and the results evaluated in terms of surface free energy components. Finally, in order to test the influence of surface properties for a potential application, the modified surfaces were used for mesenchymal stem cell culture assays and the effect of nanostructure and surface chemistry on cell adhesion was evaluated.
UR - https://www.scopus.com/pages/publications/84905457040
U2 - 10.1039/c4cp02434f
DO - 10.1039/c4cp02434f
M3 - Article
C2 - 25025655
AN - SCOPUS:84905457040
SN - 1463-9076
VL - 16
SP - 17551
EP - 17559
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 33
ER -