Hydrophilicity and morphological investigation of polycarbonate irradiated by ArF excimer laser
| Autor: | Z. Zamanipour, Parviz Parvin, Batool Sajad, Babak Jaleh, N. Sheikh |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Nuclear and High Energy Physics Materials science Excimer laser Scanning electron microscope medicine.medical_treatment Analytical chemistry Polymer Laser Microstructure law.invention Contact angle chemistry law visual_art medicine visual_art.visual_art_medium Irradiation Composite material Polycarbonate Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 265:330-333 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2007.08.067 |
| Popis: | Lasers are used to modify polymeric materials. In this work, a number of polycarbonate (PC) pieces were exposed by ArF excimer laser, 193 nm, at various UV doses from 10 to 100 J/cm2 with 50–500 mJ/pulse at 10 Hz pulse repetition rate. Morphology of PC has been investigated by scanning electron microscope (SEM) at three regimes pre-ablation, slow and fast ablation. SEM identifies that the conical defects are created on the polymer surface to grow opposite to the direction of laser irradiation. It increases the superficial absorptivity of the material dependent on the ArF laser induced conical microstructure geometry. The contact angle measurement was performed here, in order to determine the hydrophilicity of the irradiated polymer at various coherent doses. It is shown that the contact angle of PC samples which are exposed to the ArF laser significantly alters with UV dose below 7 J/cm2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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