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http://dx.doi.org/10.7317/pk.2013.37.3.316

Effect of Fluorination and Ultrasonic Washing Treatment on Surface Characteristic of Poly(ethylene terephthalate)  

Kim, Do Young (Department of Applied Chemistry and Biological Engineering, BK21-E2M, Chungnam National University)
In, Se Jin (Department of Fire and Disaster Protection Engineering, Woosong University)
Lee, Young-Seak (Department of Applied Chemistry and Biological Engineering, BK21-E2M, Chungnam National University)
Publication Information
Polymer(Korea) / v.37, no.3, 2013 , pp. 316-322 More about this Journal
Abstract
In this study, poly(ethylene terephthalate) (PET) was treated with fluorination and ultrasonic washing treatment for hydrophilic modification of PET film. We measured the change of surface modified PET film surface characteristics using contact angle, surface free energy, FE-SEM, AFM and XPS. After direct fluorination and ultrasonic washing treatment, the water contact angle was measured to be $10.81^{\circ}$, 85% reduction compared to the untreated PET film. Total surface free energy has been measured to be $42.25mNm^{-1}$, 650% increase compared to the untreated PET film. Also RMS roughness has been measured to be 1.965 nm, 348% increase compared to the untreated PET film. Hydrophilic functional group C-OH bond concentration has increased approximately 3 times. These results are attributed to the hydrophilic functional group and cavitation due to chemical etching. From this result, it was suggested that the fluorination-ultrasonic washing treatment method could be useful to make PET film surface hydrophilic.
Keywords
poly(ethylene terephthalate); fluorination; ultrasonic washing; hydrophilic surface; surface free energy;
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