丙烯酰胺类均聚物的制备及其在采油中的应用
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摘要
采用单电子转移活性自由基聚合法制备了新型丙烯酰胺类均聚物,其结构经~1H NMR和FT-IR表征。对聚合条件进行了优化,并对均聚物的热稳定性和乳化性能进行研究,结果表明最优聚合条件为:水为溶剂,催化剂用量为3 mg,于25℃反应2 h。使用温度低于70℃,聚丙烯酰胺类均聚物的浓度为4 g·L~(-1)时,对原油的乳化性能最佳。
The single electron transfer active free radical polymerization was adopted for preparation of the new type of acrylamide homopolymer. The structure was characterized by ~1H NMR and FT-IR. The optimized polymerization conditions were obtained and the thermal stability and emulsion performance of homopolymers were also analyzed. The results showed that the optimal reaction conditions were as followed: water was the solvent, the catalyst dosage was 3 mg, reaction at 25 ℃ for 2 h. When the temperature was lower than 70 ℃ and the concentration of polyacrylamide homopolymers was 4 g·L~(-1), the emulsification performance was the best for crude oil.
The single electron transfer active free radical polymerization was adopted for preparation of the new type of acrylamide homopolymer. The structure was characterized by ~1H NMR and FT-IR. The optimized polymerization conditions were obtained and the thermal stability and emulsion performance of homopolymers were also analyzed. The results showed that the optimal reaction conditions were as followed: water was the solvent, the catalyst dosage was 3 mg, reaction at 25 ℃ for 2 h. When the temperature was lower than 70 ℃ and the concentration of polyacrylamide homopolymers was 4 g·L~(-1), the emulsification performance was the best for crude oil.
引文
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[18] 郑逸良,薛小强,黄文艳,等. 单电子转移活性自由基聚合制备支化聚丙烯酸甲酯的研究[J].高分子学报,2012,4:398-403.
[2] BABU K, PAL N, BERA A, et al. Studies on interfacial tension and contact angle of synthesized surfactant and polymeric from castor oil for enhanced oil recovery[J].Appl Surf Sci,2015,353:1126-1136.
[3] TICHELKAMP T, TEIGEN E, NOURANI M, et al. Systematic study of the effect of electrolyte composition on interfacial tensions between surfactant solutions and crude oils[J].Chem Eng Sci,2015,132(18):244-249.
[4] GOU S, LUO S, LIU T, et al. A novel water-soluble hydrophobically associating polyacrylamide based on oleic imidazoline and sulfonate for enhanced oil recovery[J].New JChem,2015,39(10):7805-7814.
[5] SAKTHIVEL S, VELUSAMY S, NAIR V C, et al. Interfacial tension of crude oil-water system with imidazolium and lactam-based ionic liquids and their evaluation for enhanced oil recovery under high saline environment[J].Fuel,2017,191:239-250.
[6] MATYJASZEWSKI K, XIA J. Atom transfer radical polymerization[J].Chem Rev,2001,101(9):866-868.
[7] CHMIELARZ P, FANTIN M, PARK S, et al. Electrochemically mediated atom transfer radical polymerization(e ATRP)[J].Prog in Polym Sci,2017,69:47-78.
[8] BOYER C, CORRIGAN N A, JUNG K, et al. Copper-mediated living radical polymerization(atom transfer radical polymerization and copper(0) mediated polymerization):From fundamentals to bioapplications[J].Chem Rev,2016,116(4):1803-1949.
[9] JIAN JI, XIULAN SUN, XIUMEI TIAN, et al. Synthesis of acrylamide molecularly imprinted polymers immobilized on graphite oxide through surface-initiated atom transfer radical polymerization[J].Anal Lett,2013,46(6):969-981.
[10] HE H, LUEBKE D, NULWALA H, et al. Synthesis of poly(ionic liquid)s by atom transfer radical polymerization with ppm of Cu catalyst[J].Macromolecules,2014,47(19):6601-6609.
[11] BANERJEE S, PAIRA T K, MANDAL T K. Surface confined atom transfer radical polymerization:Access to custom library of polymer-based hybrid materials for speciality applications[J].Polym Chem,2014,5(14):4153-4167.
[12] LLIGADAS G, ROSEN B M, BELL C A, et al. Effect of Cu(0) particle size on the kinetics of SET-LRP in DMSO and Cu-mediated radical polymerization in MeCN at 25 ℃[J].Macromolecules, 2008,41(22):8365-8371.
[13] TREAT N J, SPRAFKE H, KRAMER J W, et al. Metal-free atom transfer radical polymerization[J].Journal of the American Chemical Society,2014,136(45):16096-16101.
[14] ZHANG N, SAMANTA S R, ROSEN B M, et al. Single electron transfer in radical ion and radical-mediated organic,materials and polymer synthesis[J].Chem Rev,2014,114(11):5848-5958.
[15] PAN X, LAMSON M, YAN J, et al. Photoinduced metal-free atom transfer radical polymerization of acrylonitrile[J].Acs Macro Lett,2015,4(2):192-196.
[16] MATYJASZEWSKI K, TSAREVSKY N V. Macromolecular engineering by atom transfer radical polymerization[J].J Am Chem Soc,2014,136(18):6513-6533.
[17] PERCEC V, GULIASHVILI T, LADISLAW J S, et al. Ultrafast synthesis of ultrahigh molar mass polymers by metal-catalyzed living radical polymerization of acrylates,methacrylates,and vinyl chloride mediated by SET at 25℃[J].J Am Chem Soc,2006,128(43):14156-14165.
[18] 郑逸良,薛小强,黄文艳,等. 单电子转移活性自由基聚合制备支化聚丙烯酸甲酯的研究[J].高分子学报,2012,4:398-403.