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6 March 2014Laser micromachining and modification of bioabsorbable polymers
In this research the influence of laser micromachining on physicochemical properties of bioabsorbable polymer was
investigated. Poly(l-lactide) (PLLA), commonly used for manufacturing non-permanent biomedical devices, was
irradiated with varying fluences by CO2 laser and by KrF excimer laser. To evaluate modification of the material, several
analytical techniques were used: ATR (attenuated total reflection), XPS (X-ray photoelectron spectroscopy) and DSC
(differential scanning calorimetry). We found that the laser-affected material has lower glass transition (Tg) and melting
(Tm) temperatures. CO2 and KrF excimer lasers can be successfully used for cutting and drilling of polylactide.
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Bogusz D. Stępak, Arkadiusz J. Antończak, Paweł E. Kozioł, Konrad Szustakiewicz, Krzysztof M. Abramski, "Laser micromachining and modification of bioabsorbable polymers," Proc. SPIE 8968, Laser-based Micro- and Nanoprocessing VIII, 896809 (6 March 2014); https://doi.org/10.1117/12.2040583