采用废弃聚对苯二甲酸乙二醇酯制备新型破乳剂及其对稠油乳液的破乳效率。
Fabrication of New Demulsifiers Employing the Waste Polyethylene Terephthalate and their Demulsification Efficiency for Heavy Crude Oil Emulsions.
机构信息
Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
出版信息
Molecules. 2021 Jan 22;26(3):589. doi: 10.3390/molecules26030589.
Two novel amphiphilic polyethylene amine terephthalate have been prepared via the glycolsis of polyethylene terephthalate (PET). The product, bis (2-hydroxyethyl terephthalate) (BHET), was converted to the corresponding dialkyl halide, bis(2-chloroethyl) terephthalate (BCET), using thionyl chloride (TC). This dialkyl compound was used for alkylation of dodecyl amine (DOA) and tetraethylenepentamine (TEPA) or pentaethylenehexamine (PEHA) to form the corresponding polyethylene amine terephthalate, i.e., DOAT and DOAP, respectively. Their chemical structure, surface tension, interfacial tension (IFT), and dynamic light scattering (DLS) were determined using different techniques. The efficiency of the prepared polyethylene amine terephthalate to demulsify water in heavy crude (W/O) emulsions was also determined and found to increase as their concentrations increased. Moreover, DOAT showed faster and higher efficiency, and cleaner separation than DOAP.
通过对聚对苯二甲酸乙二醇酯（PET）的醇解，制备了两种新型两亲性聚醚胺对苯二甲酸酯。产物双（2-羟乙基）对苯二甲酸酯（BHET）先与氯化亚砜（SOCl2）反应生成相应的二烷基卤化物双（2-氯乙基）对苯二甲酸酯（BCET），然后与十二胺（DOA）和四乙烯五胺（TEPA）或五乙烯六胺（PEHA）进行烷基化反应，分别得到相应的聚醚胺对苯二甲酸酯，即 DOAT 和 DOAP。利用不同的技术手段确定了它们的化学结构、表面张力、界面张力（IFT）和动态光散射（DLS）。还测定了所制备的聚醚胺对苯二甲酸酯对稠油（W/O）乳状液破乳的效率，发现其浓度越高，破乳效率越高。此外，DOAT 比 DOAP 具有更快、更高的效率和更清洁的分离效果。
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