PET Surface Chemistry Grafting Induced by 193 nm Laser

Chem. J. Chinese Universities

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PET Surface Chemistry Grafting Induced by 193 nm Laser

WU Gang¹*, WANG Ying-Jun¹, CHEN Xiao-Feng¹, YE Jian-Dong¹, WEI Kun¹, LEON Betty²

1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;
2. Department of Applied Physics, University of Vigo, Vigo 36310, Spain

Received:2008-01-28 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
Contact: WU Gang

Abstract

Abstract: Surface physical and chemical properties have very important impacts on biocompatibility of biopolymers. In this article, a 193nm excimer laser was used for the PET surface modification. The PET film was irradiated in a vacuum chamber filled with controlled ammonia flux. Surface roughness measurement, water contact angle, FTIR/ATR, XPS and Tof-SIMS were used to characterize the modified PET film surface. Water contact angle decreasing indicates that the chemical composition changed after laser irradiation in ammonia and no significant surface roughness was observed. The character amino group vibration absorption bands were displayed in FTIR/ATR spectrum at 3352 and 1613 cm^-1, respectively. XPS binding energies of C_1s at 285.5 eV and N_1s at 398.9 eV verified the C—N bond’s formation on the PET film surface. Fragment ions mapping in Tof-SIMS also shows that the proofs of amine molecule fragments could be extracted from the laser irradiated PET surface. All the results prove that the excimer laser can be used as a useful tool for the biopolymer surface modification and chemical patterning.

Key words: 193 nm laser, Surface grafting, Polylethylene terephthalate(PET), Amino

CLC Number:

O631.3⁺4

TrendMD:

WU Gang¹*, WANG Ying-Jun¹, CHEN Xiao-Feng¹, YE Jian-Dong¹, WEI Kun¹, LEON Betty². PET Surface Chemistry Grafting Induced by 193 nm Laser[J]. Chem. J. Chinese Universities, doi: .

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PET Surface Chemistry Grafting Induced by 193 nm Laser

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