Physicochemical modifications accompanying UV laser induced surface structures on poly(ethylene terephthalate) and their effect on adhesion of mesenchymal cells

被引:116
作者
Rebollar, Esther [1 ]
Perez, Susana [1 ]
Hernandez, Margarita [2 ]
Domingo, Concepcion [2 ]
Martin, Margarita [1 ]
Ezquerra, Tiberio A. [2 ]
Garcia-Ruiz, Josefa P. [3 ]
Castillejo, Marta [1 ]
机构
[1] Inst Quim Fis Rocasolano IQFR CSIC, Serrano 119, Madrid 28006, Spain
[2] Inst Estruct Mat IEM CSIC, Madrid 28006, Spain
[3] Univ Autonoma Madrid, Dept Biol Mol, E-28049 Madrid, Spain
关键词
POLYETHYLENE TEREPHTHALATE; POLYMER; PROLIFERATION; ABLATION; FILMS;
D O I
10.1039/c4cp02434f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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.
引用
收藏
页码:17551 / 17559
页数:9
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