Chemical reactions of the surface of a polypropylene (PP) film in the presence of various combinations of ultraviolet light and ozone gas (UVO) conditions were studied. Exposure of the polymer surface was carried out in a laboratory-scale UVO reactor in which the following parameters could be varied
Surface modification of polyolefine by UV light/ozone treatment
β Scribed by Bai Gongjian; Weng Yunxuan; Hu Xingzhou
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 392 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
The surface modification of polyethylene (PE) and polypropylene (PP) was investigated by UV light/ozone (UVO) treatment. The surface oxygenation was determined by electron spectroscopy for chemical analysis (ESCA). As shown from ESCA spectra, after UVO treatment, oxygen-containing functional groups, such as carbonyl, carboxyl, and ether groups, were produced in the sample surface. The dependence of oxygenation extent (as measured by O,,/C1, value of ESCA spectra) on different experimental conditions, such as irradiation time, temperature, and O2 flow rate, was obtained. It was shown that after UVO treatment a t suitable conditions the surface properties of polyolefine samples, such as hydrophilicity, adhesion property, and dyeability, were improved remarkably. Furthermore, UVO treatment in short time does not have notable effect on the ageing property. It was concluded that UVO treatment is a promising technique to modify polyolefine surface properties.
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