Abstract
We study the effects of the energetic pulsed laser on the surface of high-density polyethylene (HDPE). The modifications were induced on HDPE using short laser pulses (pulse duration 5 ns, repetition rate 10 Hz, and pulse energy 150 mJ) in air. Experiments were carried out using a Q-switched Nd:YAG laser (E08BR, Brilliant) operating at 532 and 1,064 nm. The visual inspection in lateral and vertical directions of modifications, which were stimulated by laser irradiation, were performed using optical and scanning electron microscopy. The structural changes induced in the vicinity of the modified area were evaluated by FT–IR spectroscopy. The systematic microscopic analysis of modified areas revealed that the values of modification and ablation threshold fluence were 16 and 20 J/cm2 for 532 nm and 44 and 38 J/cm2 for 1,064 nm laser wavelength, respectively. The spectroscopic analysis of the vicinity of the illuminated area (when illuminated with 50 and 100 pulses) showed a significant increase in the IR absorption bands, which belong to hydroperoxide or alcohols, i.e., from 3300 to 3500 cm−1 for 1,064 nm laser wavelength; however, an opposite situation was observed for 532 nm laser wavelength.
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Manuscript submitted by the authors in English first on March 7, 2014 and in final form on September 10, 2014.
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Bashir, M., Mehmood, M.S., Choudary, M.A. et al. Analysis of Pulse-Laser-Induced Modifications on High-Density Polyethylene for Laser Processing of Polyethylene. J Russ Laser Res 36, 258–268 (2015). https://doi.org/10.1007/s10946-015-9498-8
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DOI: https://doi.org/10.1007/s10946-015-9498-8