A complex based on imidazole ionic liquid and copolymer of acrylamide and phenoxyacetamide modification for clay stabilizer |
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| Authors: | Pingli Liu Lihua Zhou Cheng Yang Hong Xia Yang He Meilin Feng |
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| Affiliation: | 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, People's Republic of China;2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China |
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| Abstract: | A complex system (AM/AA/APO‐EMIN) was obtained by poly (acrylamide‐co‐acrylic acid‐co‐N‐allyl‐2‐phenoxyacetamide) (AM/AA/APO) combining 1‐ethyl‐3‐methyl imidazolium tetrafluoroborate ([EMIM] [BF4]) for clay stabilizer by using acrylamide (AM), acrylic acid (AA) and N‐allyl‐2‐phenoxyacetamide (APO), N‐methylimidazole, bromoethane, and sodium fluoroborate as raw materials. The complex solution exhibited excellent anti‐swelling rate (up to 94.5% at 10,000 mg/L), satisfying aging resistance (viscosity retention rate 84.2% after 15 days), and marked shear thinning behavior (viscosity retention rate 7.5% under 600 s?1). From scanning electron microscope (SEM) images, a clear network structure appeared in AM/AA/APO‐EMIM solution. Compared with an existing poly (acrylamide‐co‐diallyl dimethyl ammonium chloride) clay stabilizer (HY‐201S), AM/AA/APO‐EMIN was less content and more effective to reduce the d‐spacing of sodium montmorillonite (Na‐MMT) from 19.1 Å to 15.7 Å. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41536. |
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| Keywords: | copolymers ionic liquids oil and gas polyamides |
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