Abstract
To achieve oxidized polypropylene (OPP), polypropylene in molten state was reacted with mixed perovskite oxides (La0.9Sr 0.1Ni(1− x) CrxO3) using different concentration of oxidizing agent and varying reaction time. The modified polymer structure was then characterized using different experimental techniques such as Fourier transforming infrared (FTIR), Differential Scanning Calorimetry (DSC) and tensiometry and the melt flow index (MFI). FTIR results revealed that polar groups mainly carboxylic acids, ketones and esters have been performed in the OPP polymer structure while DSC analysis showed a decrease in the fusion temperature and an increase in glass transition temperature, compared to the original PP. In addition, solubility tests show that in contrast to the initial PP, OPP can be partially dissolved in polar solvents. Finally, it was concluded that by increasing the molar concentration of the oxidizing the agent and time of reaction, the number of polar groups increased.
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