Abstract
The interfacial adhesion is a significant factor for improving mechanical properties of filler-reinforced polymer composites. In this work, the as-spun and hot-stretched poly(phenylene sulfide) (PPS) and multi-walled carbon nanotubes (MWCNTs) composite fibers were prepared. Tensile test showed that large enhancements in tensile strength and modulus were achieved in hot-stretched samples. The strong interfacial interaction leading to the effective load transferring was realized in hot-stretched composite fibers. Further analysis showed that the strong interfacial adhesion might be the result of the formation of π–π interaction between the benzene ring of PPS and the surface of MWCNTs with the help of hot-stretching, which could be the most important reason for the remarkable mechanical enhancement of the hot-stretched composite fibers.
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