Crystallization and mechanical properties of polyphenylene sulfide/multiwalled carbon nanotube composites

Abstract

Polyphenylene sulfide (PPS)/multiwalled carbon nanotube (MWCNT) composites were prepared by melt blending and injection molding. The nonisothermal crystallization behavior, morphology, and mechanical properties of the nanocomposites were systematically investigated as a function of MWCNT content. For nonisothermal process, the presence of MWCNTs possesses both acceleration and retardation effect on the crystallization of PPS without affecting the ultimate degree of crystallinity. Due to the interfacial interaction between MWCNTs and PPS, the MWCNTs can be uniformly dispersed in PPS. The interfacial crystallization of PPS on the surface of nanotubes was observed by scanning electron microscopy and transmission electron microscopy. A reinforcing effect of MWCNTs on the mechanical properties of PPS is found, which is considered to be relevant with the uniformly dispersed MWCNTs and the interfacial crystallization.

Nonisothermal crystallization behaviors of ethylene–acrylic acid copolymer and ethylene–acrylic acid copolymer/chloroprene rubber thermoplastic vulcanizate

“…The crystallization kinetics of both polymer and TPVs are particularly important for the analysis and design of processing operations, which would be able to crystallize not only when cooled from the melt but also when heated from the amorphous state. [22][23][24][25][26][27] The former is so-called "melt crystallization" and the latter one is "cold crystallization. "…”

Effect of Polyphenylene Sulphide Particles and Films on the Properties of Polyphenylene Sulphide Composites

“…The energy storage modulus is essentially Young’s modulus, which is an indicator of the rebound of material after deformation and indicates the ability of the material to store elastic deformation energy. Generally, higher crystallinity corresponds to a higher modulus [ 40 ]. Due to the film heat treatment process, the film molecular chain arrangement tends to tighten [ 41 ], and the crystallinity of PPS enhances.…”

A multifunctional integrated carbon nanotubes/polyphenylene sulfide composite: preparation, properties and applications

“…In the second place, strong hydrogen bonding interaction or π-π conjugation occur between PVA and CNTs from microscopic mechanics (Figure 3e). 28,29 To sum up, the single-phase and twophase dispersion studies indicate that PVA can macroscopically suspend PPS particles and microscopically disperse PPS.…”

“…Hydroxyl multi-walled carbon nanotubes (CNTs) are a good kind of conductive material with excellent mechanical properties, which can effectively enhance the conductivity and mechanical properties of PPS. 28 PVA mucus as solvent suspended PPS particles by controlling viscosity and dispersed CNTs by virtue of abundant hydroxyl. Due to the thermoplasticity of PPS, it would melt and crosslink with CNTs to form a stable CNTs-PPS/PVA composite in the annealing process.…”