Vacuum UV photo-oxidation of polystyrene
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY(2016)
摘要
Polystyrene (PS) was treated with vacuum UV (VUV) (lambda = 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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关键词
Polystyrene,VUV photooxidation,oxygen atoms,XPS,contact angle,AFM,surface modification,poly(acrylic acid)
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