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articleNo Access
COLORATION OF POLYETHYLENE TEREPHTHALATE (PET) FILM BY 3MeV PROTON BEAMS
- S. Matsuyama,
- K. Ishii,
- H. Yamazaki,
- H. Endoh,
- H. Yuki,
- T. Satoh,
- S. Sugihara,
- Ts. Amartaivan,
- A. Tanaka,
- H. Komori, and
- H. Orihara
International Journal of PIXE01 Jan 2001
Preview Abstract
Coloration of polyethylene terephthalate (PET) films by using 3 MeV proton beams was studied by means of absorption spectroscopy, electron spin resonance (ESR) spectroscopy and Fourier transform infrared absorption (FT-IR) spectroscopy. Absorbance of the films increased with the dose and faded in time. Absorbance changes are caused by formation of color centers. The color centers had three components: permanent, long-lived and short-lived. Long-lived and short-lived color centers were formed by reactive species such as radicals. Annealing of color center is well explained by a proposed sequential process.

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