Vacuum UV photo-oxidation of polystyrene |
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| Authors: | Xinyun Li Marc Toro Fei Lu Jung On Alla Bailey Thomas Debies |
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| Affiliation: | 1. School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, USA;2. Xerox Corporation, Webster, New York, USA |
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| Abstract: | Polystyrene (PS) was treated with vacuum UV (VUV) (λ = 104.8 and 106.7 nm) photo-oxidation and X-ray photoelectron spectroscopy detected a controlled increase in the atomic percentage of oxygen up to a saturation level of ca. 20 at% O. Initially, C–O and carbonyl groups are observed due to the formation of alcohols, ethers, esters, and ketones. Water contact angle measurements showed ca. 25% increase in hydrophilicity of the surface with oxidation. Atomic Force Microscopy observed little changes in surface roughness with treatment time. The super water absorbent polymer poly(acrylic acid) was thinly grafted to the modified PS surface. |
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| Keywords: | Polystyrene VUV photo-oxidation oxygen atoms XPS contact angle AFM surface modification poly(acrylic acid) |
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