Hydrophobic Investigation of Excimer Laser Effects on Poly (Ethylene Terephthalate)

S Behrouzinia; F Radaei; K Khorasani; M Shayganmanesh

doi:10.14331/ijfps.2016.330095

Authors

S Behrouzinia Laser and Optics Research School, Nuclear Science and Technology Research School, AEOI, Tehran, Iran Author
F Radaei Departments of Physics, Elmo-Sanat University, Tehran, Iran Author
K Khorasani Laser and Optics Research School, Nuclear Science and Technology Research School, Atomic Energy Organization of Iran, Tehran, Iran Author
M Shayganmanesh Departments of Physics, Elmo-Sanat University, Tehran, Iran Author

DOI:

https://doi.org/10.14331/ijfps.2016.330095

Keywords:

ArF laser, Hydrophobic, Laser ablation, Poly ethylene terephthalate

Abstract

The modification on the surface of the polyethylene terephthalate (PET) polymer as a result of ArF (193nm) laser irradiation was investigated. Fourier transform infrared spectroscopy (FTIR) and energy-dispersive X-ray (EDX) spectroscopy were employed for examination of the chemical composition of irradiated surface and conical structure. FTIR spectroscopy indicates that by irradiation of PET, hydrophobic groups of the polymer molecules in the polymer chain have more freedom of movement and prevents from the interaction between water molecules and the hydrophilic groups on the polymer surface, and PET surfaces after exposure have become more hydrophobic. While the PET is irradiated by more than 800 pulses, its surfacs become hydrophilic, so that the surface of PET after treated by 1500 pulses, even become more hydrophilic than that of untreated one.

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