Characterization of acrylamide polymers for enhanced oil recovery
Characterization of acrylamide polymers for enhanced oil recovery
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DOI：
10.1002/app.11491
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发表时间：
2003-03-21
影响因子：
3
通讯作者：
Haque, I
中科院分区：
文献类型：
--
作者：
Sabhapondit, A;Borthakur, A;Haque, I
制备了丙烯酰胺与丙烯酸、丙烯酰胺与2-丙烯酰胺基-2-甲基丙磺酸、N，N-二甲基丙烯酰胺与丙烯酸、N，N-二甲基丙烯酰胺与2-丙烯酰胺基-2-甲基丙磺酸（钠盐）四种不同的共聚物。用特性粘数、单体配比、IR、H-1-NMR和X射线衍射（XRD）等方法对共聚物进行了表征。通过差热分析没有观察到结晶，并且这被XRD很好地支持。所有的聚合物都表现出较低的分解温度。由于消除了CO2、SO2、CO和NH3等气体，在差示热重分析热谱图中观察到许多分解温度。用磺酸盐基团取代丙烯酸酯基团产生与盐水更相容的聚合物，而用更疏水的基团如N，N-二甲基丙烯酰胺取代丙烯酰胺产生更耐剪切的聚合物。当聚合物溶液在120 ℃下老化1个月时，N，N-二甲基丙烯酰胺-共-2-丙烯酰胺基-2-甲基丙磺酸钠共聚物的热稳定性更好。(C)2003 Wiley Periodicals，Inc.
Four different copolymers, of acrylamide and acrylic acid, acrylamide and 2-acrylamido-2-methyl propane sulfonic acid, N,N-dimethylacrylamide and acrylic acid, and N,N-dimethylacrylamide and 2-acrylamido-2-methyl propane sulfonic acid (sodium salts), were prepared. The copolymers were characterized by their intrinsic viscosities and monomer ratios and with IR, H-1-NMR, and X-ray diffraction (XRD) spectroscopy. No crystallinity was observed by differential thermal analysis, and this was well supported by XRD. All the polymers showed low decomposition temperatures. A number of decomposition temperatures were observed in differential thermogravimetry thermograms because of the elimination of gases such as CO2, SO2, CO, and NH3. The replacement of the acrylate group with a sulfonate group produced polymers that were more compatible with brine, whereas the replacement of acrylamide with a more hydrophobic group such as N,N-dimethylacrylamide produced a more shear-resistant polymer. A N,N-dimethylacrylamide-co-sodium-2-acrylamido-2-methyl propane sulfonate copolymer was better with respect to thermal stability when the polymer solution was aged at 120degreesC for a period of 1 month. (C) 2003 Wiley Periodicals, Inc.