This study experimentally and numerically investigates the crystallization behavior of polyphenylene sulfide (PPS) resin and carbon-fiber-reinforced PPS (CF/PPS). Differential scanning calorimetry and polarized optical microscopy were performed under various solidification conditions. Subsequently, a numerical model using the framework of the phase-field method was developed based on the experimental results. Both experimental and numerical results indicated that the crystallization of thermoplastic resin strongly depends on the solidification conditions and the presence of impurities. The developed numerical model could qualitatively predict the crystallization behavior. Therefore, the developed model is useful for material design considering that the microstructure depends on the manufacturing conditions.
