文献类型：期刊文献

英文题名：Improving Cold Flowability of High Waxy Crude Oil by Comb-Type Polymer Prepared From Green Biomass

作者：Fan, Mingwang[1,2];Jiao, Zengfu[3];Sun, Xinjie[1,2];Cong, Shilong[3];Jia, Lingli[1,2];Liu, Xia[4];Xue, Runbin[4];Pi, Yanfu[5];Xu, Jun[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Large Ind Reactor Engn Res Ctr, Minist Educ, Shanghai, Peoples R China;[3]China Petr Pipeline Engn Co Ltd, Commissioning & Operat Co, Langfang, Peoples R China;[4]China Natl Petr Corp CNPC, Xinjiang Oilfield, Oil & Gas Storage & Transportat Co, Changji, Peoples R China;[5]Northeast Petr Univ, Key Lab Enhanced Oil & Gas Recovery, Minist Educ, Daqing, Peoples R China

年份：2025

卷号：142

期号：33

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20252018410222);WOS:【SCI-EXPANDED(收录号:WOS:001484937100001)】；

基金：This work was supported by Natural Foundation of China (52174023), China Petroleum Engineering Corp. Ltd, (2021ZYGC-01-01).

语种：英文

外文关键词：copolymers; differential scanning calorimetry (DSC); radical polymerization

摘要：In this study, poly(octadecyl acrylate-co-maleic anhydride) (POM) was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization, followed by grafting green biomass with maleic anhydride. The chemical structures of the synthesized polymers were characterized by Fourier transform infrared spectroscopy (FT-IR), Proton nuclear magnetic resonance (1H NMR), and Gel permeation chromatography (GPC). The effects of these polymers on the crystallization behavior and cold flowability of waxy crude oil were examined using X-ray diffraction (XRD), differential scanning calorimetry (DSC), polarized light microscopy, and rheological analysis. Addition of octadecyl acrylate-maleic anhydride glyceryl monostearate (OM-GMS) the crystallization activation energy increasing largely from 1.422 to 8.420 kJ mol-1. When POM was grafted with saturated fatty acids, the crystallinity index (CI) decreased by 4.14% compared to unsaturated fatty acids. Viscosity first decreased by 95.4% with OM-GMS addition, then increased with more long-chain alkanes in glyceride. Viscosity first decreased and then increased with increasing grafting rate. At a grafting ratio of 0.4, viscosity decreased by 93.4%. Incorporating green biomass into polymer design is recommended to further reduce reliance on fossil fuels. Future efforts should prioritize replacing conventional monomers in pour point depressants with sustainable biomass-based alternatives, enhancing crude oil flowability while advancing environmental stewardship.