PET katkısının PP’nin mekanik ve morfolojik özelliklerine etkisi

Abstract

Highlights: Graphical/TabularAbstract  Measurement of mechanical properties of PP /PET blends  Improving mechanical properties  Morphological characteristics of PP /PET blends When the morphology and mechanical properties of PP / PET mixtures are examined, it is seen that there is a more homogenized structure in PP +%30PET sample in SEM images. In PP + %40 PET mixture, the transition from droplet to fibril form appears more clearly. In PP +%50 PET mixture, homogeneity started to deteriorate again and gaps started to form again in structure it was observed that Young's modulus reached 2653.79 MPa in PP +%40 PET sample, and an increase of about 210% compared to pure PP. Figure A. SEM images of PP / PET mixtures and Young modulus change Purpose: In this study, the dynamic-mechanical and spectroscopic properties of PP / PET polymer blends with different ratios have been investigated experimentally and the effect of PET additive on dynamic-mechanical and spectroscopic properties has been tried to be explained. Theory and Methods: In this study, tensile test of PP and PET blends were tested at a drawing speed of 25 mm/min and at different ambient temperatures. SEM analyzes were performed and DMA tests used to determine the viscoelastic properties of PP / PET mixtures were performed at a frequency of 1 Hz from 30°C to 120°C with a temperature increase of 2,00 ° C / min. For structure characterization of PP / PET mixtures, FTIR analyzes were performed between 4000-650 cm-1. It was compared with the characteristic peaks of pure materials to see the interactions of PP / PET blend films. Results: It is observed that mechanical properties reaches its maximum value for all temperatures at 40% PET. There is a structural phase transition and matrix structure changes in the PP + 50% PET sample. Because PET and PP ratios are equal For this reason, it was observed that Young's modulus values decreased in comparison to PP + 40% PET in this example.SEM images also support this view. Conclusion: In this study, the effect of PET additives on the mechanical properties of PP, instead of glass fiber, was investigated especially for plastic pipe manufacturing., and it was concluded that the best mechanical properties were PP + 40% PET