Effect of Silver Nanoparticles on the Melting Behavior, Isothermal Crystallization Kinetics and Morphology of Polyoxymethylene

摘要: In this work, the effects of silver (Ag) nanoparticles on melting behavior, isothermal crystallization kinetics, and morphology polyoxymethylene (POM) were studied. It was found that peak temperature (Tm) (TC) POM/Ag nanocomposites shifted to higher with content Ag increased. addition, kinetics determined by Avrami Lauritzen-Hoffman models. The results half-time (t0.5), reciprocal (τ0.5), exponent (n), rate constant (k) showed low loading (≤1 wt%) accelerated POM. However, when reached 2 wt%, they aggregated together restrained Meanwhile, nucleation parameter (Kg) surface free energy folding (δe) revealed reduced need create a new crystal surface, leading faster crystallization. Moreover, activation energies (∆E) using Arrhenius model, which suggested induced heterogeneous lowing ∆E. Furthermore, polarized light microscopy indicated generated great amount sites led formation smaller spherulites.