Synthesis and Crystallization Studies of Thermo-plastic Polyster/Titania Nanocomposites

Abstract

The present work reports the non-isothermal crystallization kinetics of PET-TiO 2 nanocomposites. The average particle size of TiO 2 nanoparticles, prepared by chemical route, has been calculated 32 nm using Debay-Scherrer's formula in XRD peaks. PET-TiO 2 nanocomposites have been synthesized using solution casting method. The investigation of non-isothermal crystallization behavior has been conducted by means of Differential Scanning Calorimeter (DSC). The crystallization temperature shift to lower temperature for both PET pristine and PET-TiO 2 nanocomposites due to decrease in mobility of chain segments and heterogeneous nucleation. Also, the inclusion of TiO 2 nanoparticles may accelerate nucleation rate in nanocomposites that causes the crystallization time and absolute crystallinity fraction. The thermal conductivity of inorganic filler TiO 2 nanoparticles may affect the crystallization temperature.

Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

“…Figure (B) shows the XRD pattern of synthesized ZnO nanoparticles. The diffraction peaks at 31.41, 34.28, 35.41, 56.35, 62.48, and 67.75 showed that the ZnO particles were in a hexagonal wurtzite form that was similar to those reported in the literature . Figure (C) shows the XRD patterns of PPy.…”

Study of Optical Constants of ZnO Dispersed PC/PMMA Blend Nanocomposites

“…(2) shows the XRD pattern of as synthesized ZnO nanoparticles.The diffraction peaks of ZnO nanoparticles appeared at 2θ values 31.49,34.18,35.47.25,56.30,62.57 and 67.81have been keenly indexed as hexagonal wurtzite phase of ZnO. XRD peaks indicates that the prepared material consist ofparticles in nanoscale range.The average particle size of as synthesized nanoparticles have been determined ~11nm using Debye Scherrer equation [15]. The XRD patterns Fig.…”

Synthesis and Thermal Characterization of Titanium‐Dioxide Filled Polycarbonate/Polystyrene Blend Nanocomposites

“…Figure (a) shows the XRD pattern of TiO 2 nanoparticles. TiO 2 grain size has been calculated using Debye‐Scherrer Equation as; where k is Scherrer's constant, λ is the wavelength of X‐rays, θ is the Bragg diffraction angle and β is the Full Width at Half‐Maximum (FWHM) of the diffraction peak. Figure (b) shows the TEM image of as prepared TiO 2 nanoparticles, which is in good agreement with the XRD results.…”

“…TiO 2 is commonly used and one of the most investigated metal oxides since it is inexpensive and non‐toxic material. Dispersion of TiO 2 in polymer matrix can offer enhancement in the weatherability and durability of polymer products . Present study concerns with the structural and thermal properties of TiO 2 filled PC/PS blend nanocomposites.…”