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Himani Negi,Sundram Sharma,Raj K. Singh 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
The deposition of paraffin on the pipeline surface during crude oil transportation is a significant issue foroil industries. In this regard, the demand for adequate methods of wax deposition has gained considerableattention. In the current work, five cellulose esters were synthesized with varied chain short/longand linear/branched in a homogeneous medium and characterized by various analytical techniques. The ability of all cellulose esters to change wax crystal’s structure and pour-point and yield stress reductionwas observed by cross-polarized microscope, pour-point measurement, differential scanningcalorimetry, and rheology. It was noticed that the paraffin crystallization temperature and pour-pointhad decreased significantly with long/linear side chain esters. The efficiency to reduce yield stress wasfound to correlate with the nature of the side chain. Long/linear side chain esters with 0.3 wt% are moreeffective in stabilizing the paraffin/asphaltene gel formation, thereby improving the flowability of waxyoil. The computational calculations also support all the findings at a molecular level.