Predicting particle segregation in semicrystalline polymers: a crystallization kinetics approach

Abstract

The incorporation of particles into semicrystalline polymers is a common technique for modifying polymer properties. This study systematically investigates variables influencing particle segregation during solidification in semicrystalline polymers. Key factors include crystallization during solidification and particle characteristics like size, distribution, and nature. Particle distribution can be affected by crystalline phase growth, leading to phenomena like repulsion or segregation. The main objective of this work is to systematically investigate variables contributing to particle segregation during the solidification of semicrystalline polymers, leading to a nonuniform distribution within the polymer matrix. This phenomenon has a direct impact on the properties of semicrystalline polymers, resulting in variations in mechanical, physical, and electrical properties across the polymer matrix. Both isothermal and non-isothermal studies have been conducted to explore significant crystallization parameters, nucleation modes, and crystalline phase growth in the presence of particles. These studies aim to determine the relationship between particle segregation and the altered properties of the polymer matrix. Results revealed the critical importance of a uniform crystal growth mechanism as a prerequisite for the occurrence of particle segregation within polymers. Additionally, correlations have been established between kinetic parameters and simulation results derived from a previously developed model, demonstrating a high level of agreement.