Abstract
Polyphenylene sulfide (PPS) fiber is widely used in flame-retardant fabrics, high-temperature filter bags, among other applications. It has excellent heat and corrosion resistance. However, the fibers were characterized by weak photo-stability. Herein, an unique strategy based on second component induced shielding effect for constructing organic-inorganic hybrid nanocomposites were developed by using multi-walled carbon nanotubes (MWCNTs) as effective stabilizers. The photo-stability of PPS/MWCNTs composite fibers were investigated by Xenon-lamp weather resistance test chamber. Moreover, the mechanism for photo-stability enhancement was analyzed by Fluorescence spectrometer, differential scanning calorimeter and thermogravimetric analysis. Compared with neat PPS fiber, it was showed significant improvement in photo-stability of PPS/MWCNTs composite fibers resulting to increased strength retention ratio from 57.8% for neat PPS to 77.3% for PPS/MWCNTs-1.0 fiber. It was finally concluded that the mechanism for enhanced photo-stability of PPS fiber was based on efficient quenching of optically generated excitons by MWCNTs resulted from steady-state fluorescence spectroscopy.
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