用新型官能化单体接枝γ辐照eva共聚物增强含蜡原油的流动性

IF 2.6 4区 化学 Q3 POLYMER SCIENCE
Mohamed Mohamady Ghobashy, Ahmed Siddiq, Abu-Bakr A. A. M. El-Adasy, Mohamed F. Hamam, Basem Kh. El‑Damhougy, Ahmed A. Zaher, Ashraf M. Ashmawy
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引用次数: 0

摘要

最近的研究发现了石油行业常用的降凝剂(即eva共聚物)的一个关键限制,即随着石蜡含量的增加,降凝剂的效率会下降。为了解决这一问题,本研究探索了通过伽马辐射接枝长烷基链均聚物到EVA共聚物上制备EVA-g-p(HDOAB)和EVA-g-p(HDAOCP)+Br−)来增强EVA共聚物作为含蜡原油降凝剂的性能。FTIR和1H-NMR结果表明,利用伽马射线成功制备了EVA-g-p(HDOAB)和EVA-g-p(HDAOCP)+Br−)。在原油中加入不同浓度(100、500、1000、2000和5000ppm)的接枝eva共聚物。在2000 ppm浓度下,接枝共聚物的倾点从24°C显著降低到-18°C和-15°C,优于纯EVA,后者仅将倾点降低到-9°C。此外,两种接枝共聚物都表现出明显的粘度和剪切应力降低,特别是在接近倾点的温度下。低温流动性能的增强是由于接枝eva共聚物作为成核剂的协同作用,改变了结晶模式并抑制了晶体生长。这项研究强调了利用伽马电离辐射开发高性能原油ppd的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Flowability enhancement of waxy crude oil using gamma-irradiated EVA-copolymers grafted with novel functionalized monomers

Flowability enhancement of waxy crude oil using gamma-irradiated EVA-copolymers grafted with novel functionalized monomers

Recent research has identified a key limitation in the petroleum sector commonly used pour point depressant (i.e., EVA-copolymer), which shows decreasing efficiency as the paraffin wax content increases. To address this issue, this study explored the enhancement of EVA-copolymers as pour point depressants for waxy crude oil through the gamma irradiation grafting of homopolymers with long alkyl chains onto EVA copolymers to produce (EVA-g-p(HDOAB) and EVA-g-p(HDAOCP)+Br). FTIR and 1H-NMR spectroscopy show that EVA-g-p(HDOAB) and EVA-g-p(HDAOCP)+Br) were successfully prepared using gamma radiation. Various concentrations (100, 500, 1000, 2000, and 5000 ppm) of the grafted EVA-copolymers were introduced into the crude oil. The grafted copolymers showed a significant reduction in pour point from 24°C to -18°C and -15°C at a 2000 ppm concentration, outperforming pure EVA, which only reduced the pour point to -9°C. Additionally, both grafted copolymers demonstrated notable viscosity and shear stress reductions, particularly at temperatures close to the pour point. The enhanced low-temperature flow properties are attributed to the synergistic effect of the grafted EVA-copolymer acting as nucleating agents that modify crystallization patterns and inhibit crystal growth. This study underscores the potential of using gamma ionizing radiation to develop high-performance PPDs for crude oil.

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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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