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Effect of CO2 laser radiation on the surface properties of polyethylene terephthalate |
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| Authors: | M. Dadsetan H. Mirzadeh N. Sharifi |
| Affiliation: | a Laser Research Center, Atomic Energy Organization of Iran, P.O. Box 11365-8486, Tehran, Iran b Iran Polymer Institute, P.O.Box 14965/159, Tehran, I.R, Iran c Department of Chemistry, Faculty of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran |
| Abstract: | The surfaces of polyethylene terephthalate (PET) obtained by irradiation with a CO2 pulsed laser in air were studied. The complicated microstructures using various laser wavelengths were observed by scanning electron microscopy (SEM). The changes in chemical and physical properties of the irradiated PET surface were investigated by attenuated total reflectance infrared spectroscopy (ATR-FTIR) and contact angle measurements. ATR-IR spectrum showed that the crystallinity in the surface region decreased due to laser irradiation. The water drop contact angle also decreased with increasing of laser pulses. The density of peroxides formed on the irradiated PET surface were determined by iodide method. |
| Keywords: | CO2 laser Surface properties Polyethylene terephthalate Peroxide |
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