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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of comb-type copolymers with various pendants and their effect on the complex rheological behaviors of waxy oils
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Synthesis of comb-type copolymers with various pendants and their effect on the complex rheological behaviors of waxy oils

机译：各种侧基梳型共聚物的合成及其对蜡质油流变行为的影响

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摘要

To improve the flowability of waxy crude oil containing a high concentration of asphaltenes (AS), novel comb-type copolymers of poly(maleic acid polyethylene glycol ester-co--octadecene) (PMAC) and poly(maleic acid aniline amide-co--octadecene) (AMAC) with various grafting ratios (R-g) of PEG/aniline to maleic anhydride are synthesized. Model oils containing wax mixtures and AS are prepared to explore the effect of asphaltene concentration and the copolymers on the yield stress. The influence of the copolymers on the wax appearance temperature (WAT) of Liaohe high waxy oil is examined by rheological and microscopic methods. Experimental flow curves of shear stress as a function of shear rate are fitted following the Casson model to interpret the rheological properties of gelled waxy crude oil in the presence of AMACs, PMACs, and MAC. Compared with MAC, PMACs, and AMACs are more efficient in reducing the yield stress of both model oil and crude oil, which indicates a better flowability. It is found that PMAC1.0 and AMAC1.0 with a medium R-g can balance the interaction of copolymers with waxes and AS and reduce the yield stress much more than others. Between them, AMAC1.0 that possesses aromatic pendants is better than PMAC1.0, which only has polar pendants. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41660.
机译：为了提高含高浓度沥青质（AS）的蜡质原油的流动性，聚马来酸聚乙二醇酯-共十八烯（PMAC）和聚马来酸苯胺酰胺-共聚的新型梳型共聚物合成了具有各种接枝比（Rg）的PEG /苯胺与马来酸酐的顺式十八碳烯（AMAC）。制备了包含蜡混合物和AS的模型油，以探索沥青质浓度和共聚物对屈服应力的影响。通过流变学和微观方法研究了共聚物对辽河高蜡质油蜡外观温度（WAT）的影响。根据Casson模型拟合作为剪切速率函数的剪切应力的实验流动曲线，以解释存在AMAC，PMAC和MAC时胶凝蜡状原油的流变特性。与MAC相比，PMAC和AMAC在降低模型油和原油的屈服应力方面更有效，这表明流动性更好。发现具有中等R-g的PMAC1.0和AMAC1.0可以平衡共聚物与蜡和AS的相互作用，并且比其他更多地降低屈服应力。在它们之间，具有芳香族侧基的AMAC1.0优于仅具有极性侧基的PMAC1.0。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41660。

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