疏水缔合水溶性聚合物与表面活性剂结构分析及相互作用研究

发布时间：2018-06-14 14:32

本文选题：聚/表二元复合驱 + 淀粉-碘化镉法　；参考：《山东大学》2015年硕士论文

【摘要】：本文针对海上平台筛选的聚/表二元复合驱体系(由聚合物HNT300、主表面活性剂BH-M2和助表面活性剂FNR所组成)中聚合物与表面活性剂的结构进行了分析,建立了聚/表二元复合驱体系的组分测定方法,考察了其配伍性和热老化性。通过红外、核磁共振等实验对HNT300的结构及性质分析发现该聚合物具有疏水缔合行为,且为两性结构,其表观分子量在1700万,具有一定的表面活性,且溶液抗剪切能力较差。同时确定了两种表面活性剂的结构,主表面活性剂BH-M2主要为烷基磺酸盐结构,而FNR为烷基酰胺结构的非离子表面活性剂。利用核磁共振法测定了聚/表二元复合驱体系不同组分含量,其规律与实际值基本一致,但存在偏差。利用淀粉-碘化镉方法测定聚/表二元复合驱体系聚合物浓度测定方法,探索了不同组分存在对聚合物浓度测定的影响。同时利用凯氏定氮法与淀粉-碘化镉方法测定聚/表二元复合驱组成,测试结果与实际组成规律一致。采用浊度法和目测法考察了二元复合驱体系的配伍性,发现HNT-BHF体系的浊度增加明显表明其配伍性差。混合表面活性剂体系的浊度受FNR的影响很大。温度升高,体系的浊度略有增加,但浓度对于体系浊度的影响作用明显。通过透射电镜考察发现HNT300浓度增加,聚合物形成网络结构,但聚合物在双子表面活性剂或助表面活性剂存在时更易形成树枝状聚集体,且浓度增加聚集更明显。聚/表二元复合驱体系粘度和表面张力随老化时间的延长,变化不明显,具有较好的热稳定性。
[Abstract]:In this paper, the structure of polymer and surfactant in polymer / surface binary flooding system (composed of polymer HNT300, main surfactant BH-M2 and cosurfactant FNR) selected by offshore platform was analyzed. A method for the determination of the composition of polymer / surface binary composite flooding system was established, and its compatibility and thermal aging properties were investigated. The structure and properties of HNT300 were analyzed by IR and NMR. It was found that HNT300 had hydrophobic association behavior and amphoteric structure, its apparent molecular weight was 17 million, it had a certain surface activity, and the solution had poor shear resistance. At the same time, the structure of two surfactants was determined. The main surfactant BH-M2 was alkyl sulfonate and FNR was non-ionic surfactant with alkyl amide structure. Nuclear magnetic resonance (NMR) method was used to determine the contents of different components in polymer / surface binary composite flooding system. The law is basically consistent with the actual value, but there is a deviation. The effect of different components on the determination of polymer concentration in polymer flooding system was investigated by means of starch cadmium iodide method. Kjeldahl nitrogen determination method and starch cadmium iodide method were used to determine the composition of polymer / surface binary composite flooding. The compatibility of binary composite flooding system was investigated by turbidimetric method and visual method. It was found that the increase of turbidity in HNT-BHF system obviously indicated that the compatibility of HNT-BHF system was poor. The turbidity of the mixed surfactant system is greatly affected by FNR. The turbidity of the system increases slightly with the increase of temperature, but the effect of the concentration on the turbidity of the system is obvious. It was found by TEM that the polymer formed a network structure with the increase of HNT300 concentration, but the dendritic aggregates were more easily formed in the presence of Gemini surfactants or cosurfactants, and the aggregation was more obvious with the increase of HNT300 concentration. The viscosity and surface tension of polymer / surface binary composite flooding system changed little with aging time and had better thermal stability.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.46

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