Thermal analysis and non-isothermal crystallization kinetic of PET/UiO-66 nanocomposite

Journal of Materials Research and Technology

Essam R. Shaaban¹  Ahmed F. Al-Hossainy²  Ahmed Alshahrie³  Yas M. Al-Hadeethi³  Moustafa Ahmed³  Arwa T. Kutbee³ 

[1]Corresponding author.

[2]Department of Chemistry, Faculty of Science, New Valley Branch, Assiut University, El-Kharga, Al-Wadi Al-Jadid, Egypt

[3]Department of Physics, Faculty of Science, King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia

关键词: PET;    UiO-66;    Thermogravimetric analysis;    Differential scanning calorimetry;    Non-isothermal conditions;    Thermal stability;   

DOI  :  

来源: DOAJ

【 摘 要 】

The thermal and crystallization properties of poly (ethylene terephthalate) (PET) in the presence of metal–organic frameworks (MOFs) such as UiO-66(Zr) have been systematically studied. Under the best conditions, UiO-66(Zr) functions as a key nucleating agent in the PET scheme. In this work, a merge between UiO-66 and PET was used to increase compatibility, however, the tetra oxidation of Zr4+ revealed by defects in UiO-66 was used to enhance the reaction between PET and UiO-66 as well. Additionally, PET containing varying amounts of UiO-66 were made-up. UiO-66 has high nucleation effectiveness in the matrix of PET due to its large specific surface area and coordination of Zr4+. When compared between the formation PET and PET/UiO-66 matrix, the rate of crystallization for PET/UiO-66 nanocomposite was considerably accelerated, and the temperature of crystallization for PET-UiO-66 was remarkably increased or decreased with increasing UiO-66 content, indicating that adding UiO-66 to PET accelerates crystallization. The thermal stability of PET/UiO-66 nanocomposites in terms of characteristic temperature and kinetic parameters, as well as the dispersion of UiO-66, were examined using both (DSC) and (TGA) under non-isothermal circumstances. The degrading response rate (dx/dt)p and the kinetic exponent n of PET/UiO-66 nanocomposites are estimated and analyzed.

【 授权许可】

Unknown