Cementitious-matrix composites from SiCl4-plasma-activated polypropylene fibres
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY(2012)
摘要
Polypropylene (PP) fibres (fibrillated PP) obtained by inducing splits in PP films were treated under radio frequency (RF) (30 kHz) SiCl4-plasma conditions in a stainless steel, parallel plate, capacitively coupled reactor. Analytical investigations carried out on the pale yellow-coloured fibre demonstrated the presence of OH groups and Si atoms on the PP surfaces, resulting in improved wettability and decreased contact angle values. Surface morphologies estimated using atomic-force microscopy indicated the presence of a very rough surface structure for the plasma-treated substrates in comparison with the unmodified samples. Comparative test data from PP fibre-reinforced concrete and SiCl4-cold plasma-treated PP fibre reinforced concrete showed improved mechanical characteristics (flexural strength, flexural toughness, and toughness indices) for all of the plasma-treated fibre-based composites.
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关键词
cementitious composites,plasma,polypropylene fibres
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