Issue 104, 2015
From the journal:

RSC Advances

Thermally stable imidazoline-based sulfonate copolymers for enhanced oil recovery†

Shaohua Gou,*a   Shan Luo,a   Tongyi Liu,a   Hong Xia,a   Dong Jing,b   Qin Zhang,b   Shiwei Li,b   Zhonghui Lic  and  Qipeng Guo*d  

* Corresponding authors

a State Key Lab of Oil and Gas Reservoir Geology and Expoitation, Southwest Petroleum University, China
E-mail: shaohuagou@swpu.edu.cn

b Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, China

c Institute of Functional Molecules, Chengdu Normal University, China

d Institute for Frontier Materials, Deakin University, Australia
E-mail: qguo@deakin.edu.au

Abstract

Novel imidazoline-based sulfonate copolymers (noted PAMDSCM and PAMPSCM) were successfully prepared by copolymerization of acrylamide (AM), acrylic acid (AA), 1-acrylamido ethyl-2-oleic imidazoline (ACEIM) with the sodium salts of 3-(diallyl-amino)-2-hydroxypropyl (NDS) or 2-acrylamido-2-methylpropane sulfonic acid (AMPS), respectively. The copolymers were characterized by infrared (IR) spectroscopy, 1H nuclear magnetic resonance (1H NMR) spectroscopy, pyrene fluorescence probe spectroscopy, viscosimetry and thermogravimetry (TG). Both PAMDSCM and PAMPSCM copolymers had excellent high-temperature tolerance in comparison with the same concentration of HPAM, and the residual viscosities were 32.0 mPa s and 31.3 mPa s (viscosity retention rates were 38.8% and 37.1%) at 140 °C, respectively. The copolymers possessed superior long-term thermal stability and their residual viscosity rates were up to 81.8% and 63.8% (52.9 mPa s and 47.1 mPa s) lasting 1.5 hours at 100 °C and 170 s−1, respectively.

Graphical abstract: Thermally stable imidazoline-based sulfonate copolymers for enhanced oil recovery

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Article information

DOI
https://doi.org/10.1039/C5RA15434K
Article type
Paper
Submitted
03 Aug 2015
Accepted
29 Sep 2015
First published
29 Sep 2015

RSC Adv., 2015,5, 85165-85173

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Thermally stable imidazoline-based sulfonate copolymers for enhanced oil recovery

S. Gou, S. Luo, T. Liu, H. Xia, D. Jing, Q. Zhang, S. Li, Z. Li and Q. Guo, RSC Adv., 2015, 5, 85165 DOI: 10.1039/C5RA15434K

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