Chemical and mechanical properties analysis of extruded polyvinyl choloride (PVC)/sepiolite composite

Abstract

In this study, poly vinyl chloride (PVC)/ sepiolite composites were produced using an extruder. Two different sepiolite powders: white and gray were added to the PVC in order; 5 wt.%, 10 wt.%, 15 wt.% and 20 wt.%. The morphology alteration, chemical behavior and mechanical properties of the powders and the composites were examined by X-ray fluorescence (XRF), tensile test, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and ultimate tensile strength (UTS). The results showed that the sepiolite white powder had 20.72 wt.% CaO and approximately half of the 20.81 wt.% SiO2 as compared to the sepiolite gray powder. The XRD analysis confirmed that the structure of calcined white sepiolite contained dolomite, while gray calcined-sepiolite contained zeolite. The composites with 5 wt.% sepiolite white or gray powders exhibited higher tensile strength. Increasing the quantity of both sepiolite powders in the composites deteriorated the surface with cracks and shifted the thermal degradation of the sepiolite gray toward higher temperatures.

Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

“…In addition, appearance of peaks around 713 (also C-H) and 1062 cm −1 are attributed to conversion of carbonate to Ca-O. The sharp peak at 3650 cm -1 and a little peak at 2355 cm -1 were assigned to O-H group in (CaOH)2 resulted from water adsorbed [5,12,[17][18][19][20]. On the other hand, the peaks at 3290 and 1651 cm -1 could be due to presence of amines in the eggshell membrane particle [17].…”

A comparative study of the effect of polyurethane nanofiber and powders filler on the mechanical properties of carbon fiber and glass fiber composites

“…Here, it can be stated that the nanofibers can play a good adhesion bridge between fibers and resin. On the other hand, sepiolite powder is composed of magnesium silicate (Mg4Si6O15(OH)2•6H2O), and the high surface area of this clay makes it an excellent absorbent of H2O [17]. When looking at the chemical composition of the resin-filled with sepiolite, the Mg and Si elements were detected with 1.79 wt.% and 2.23 wt.%, respectively Figure 6(a).…”

“…Different types of * Corresponding author/Yazışılan Yazar fillers were considered to enhance the mechanical properties of polymer composites such as rubber particles, nano-scaled clays, Al2O3, SiO2, graphene oxide, and nanofibers. [10]- [17]. Nanofibers had advantages compared to other fillers because they had better dispersion and because they do not increase the viscosity in the resin [18].…”