MODIFIED ETHYLENE-VINYL ACETATE COPOLYMER AS A DEPRESSANT OF POUR POINT WAX OIL

Abstract

The ethylene–vinyl acetate copolymer (EVA) was modified by hydrolysis of acetate groups. The separately hydrolysed copolymer was characterized by Fourier transform infrared spectroscopy(FTIR). Research was carried out to determination the influence of modified EVA polar groups on decrease the pour point temperature of oil.The results showed that EVA greatly decrease the Pour Point Temperature (PPT) of paraffin oil. In addition, EVA with strong polarity could provide greater electrostatic repulsion force to wax crystals, which made the wax crystals have more difficulty to connect together and form a much looser network structure.

References

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