Study on the non-isothermal crystallization kinetics of PVC/Nano SiO₂-TiO₂ composite resin by DSC

This article presents a detailed study on the non-isothermal crystallization kinetics of PVC/Nano SiO2-TiO2 composite resin, utilizing differential scanning calorimetry (DSC) to analyze thermal properties and crystallization behavior. The research highlights the significant improvements in mechanical strength, elasticity, and thermal stability achieved by incorporating SiO2 and TiO2 nanoparticles into PVC resin. The study investigates the surface chemical modification of nanoparticles to enhance their compatibility with PVC, leading to better mixing and improved composite properties. Key findings include the crystallization peak temperature variations with cooling rates and the impact of nanoparticle content on crystallization enthalpy. The article also explores the crystallization kinetics using Avrami, Ozawa, and Mo equations, providing a thorough understanding of the crystallization process. Additionally, the activation energy of the crystallization process is calculated using the Kissinger-Akahira-Sunose method, revealing the influence of nanoparticle content on the crystallization activation energy. The results suggest that the addition of 3% to 5% SiO2 and TiO2 nanoparticles is optimal for enhancing the crystallization behavior of PVC composites, making them suitable for various industrial applications.