Preparation, characterization and thermal properties of polypropylene/polyethylene/zinc borate composites: investigation of thermal degradation kinetics

Saltan F.; Şentürk S.; Al A.M.; Özkan A.N.; Şirin K.

Preparation, characterization and thermal properties of polypropylene/polyethylene/zinc borate composites: investigation of thermal degradation kinetics

Date

2023

Authors

Publisher

Springer Science and Business Media B.V.

Abstract

In this study, polypropylene/polyethylene/zincborate composites (PP/HDPE/Zinc Borate) were prepared using high-density polyethylene, isotactic polypropylene, and a certain percentage of zinc borate. The composites were characterized using by X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDX), Fourier Transform Infrared (FT-IR) spectroscopy analyses. The thermal behavior of the materials was investigated using thermogravimetric analysis (TG), Differential Thermal Analysis (DTA), and Differential Thermogravimetry (DTG). The thermal degradation kinetics of the PP/HDPE/Zinc Borate15% composite was investigated. The apparent activation energies (Ea) were obtained following the differential and integral methods of Kissenger and Flynn-Wall-Ozawa (FWO). Using Kissinger's and Flynn–Wall–Ozawa methods to define thermal degradation of PP/HDPE/Zinc Borate%15, their activation energies were 233.3 kJ/mol and 189.3 kJ/mol, respectively. The mechanism of the studied conversion range was found to be the R3 deceleration model using the Coats–Redfern. The viscosity and shear stress of PP/HDPE/Zinc Borate15% were determined using a cone-plate type rheometer. PP/HDPE/Zinc Borate15% composite shows plastic-type fluidity, according to rheological analysis. © 2023, The Polymer Society, Taipei.