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
{"title":"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","authors":"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","doi":"10.1007/s10965-025-04331-1","DOIUrl":null,"url":null,"abstract":"<div><p>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)<sup>+</sup>Br<sup>−</sup>). FTIR and <sup>1</sup>H-NMR spectroscopy show that EVA-g-p(HDOAB) and EVA-g-p(HDAOCP)<sup>+</sup>Br<sup>−</sup>) 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.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 4","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Flowability enhancement of waxy crude oil using gamma-irradiated EVA-copolymers grafted with novel functionalized monomers\",\"authors\":\"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\",\"doi\":\"10.1007/s10965-025-04331-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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)<sup>+</sup>Br<sup>−</sup>). FTIR and <sup>1</sup>H-NMR spectroscopy show that EVA-g-p(HDOAB) and EVA-g-p(HDAOCP)<sup>+</sup>Br<sup>−</sup>) 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.</p></div>\",\"PeriodicalId\":658,\"journal\":{\"name\":\"Journal of Polymer Research\",\"volume\":\"32 4\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-03-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymer Research\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10965-025-04331-1\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Research","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10965-025-04331-1","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
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.
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.