6 March 2014 Laser micromachining and modification of bioabsorbable polymers
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Abstract
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); doi: 10.1117/12.2040583; https://doi.org/10.1117/12.2040583
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