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Abstract In this study, tetradecyl methacrylate-maleic anhydride-benzylidene acetone (C₁₄MC-MA-MCA) terpolymers were synthesized via free radical polymerization and evaluated as pour point depressants (PPDs) for coal-based diesel. The findings indicate that the C₁₄MC-MA-MCA (3:1:1) terpolymer exhibited the most effective inhibition of the solid point (SP) at 1500 ppm concentration. Specifically, it reduced the SP of coal-based diesel from − 4 ℃ to -42 ℃, marking a significant decrease of 38 ℃. Furthermore, the crystallization behavior and SP reduction mechanism of C₁₄MC-MA-MCA in coal-based diesel were investigated using viscosity analysis and polarized optical microscopy (POM).
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Wan et al. (2024) studied this question.
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