Synthesis and characterization of partially hydrolyzed polyacrylamide nanocomposite weak gels with high molecular weights |
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| Authors: | Jingshui Xu Denglong Chen Yangchuan Ke Li Yang Xin Bai Guoliang Zhang Zheling Zeng Wenshuai Gao Deming Gong |
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| Affiliation: | 1. Quangang Research Institute of Petrochemical Technology, Fujian Normal University, Fuzhou, China;2. State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing, China;3. School of Environmental and Chemical Engineering, Nanchang University, Nanchang, China;4. School of Biological Sciences, University of Auckland, Auckland, New Zealand |
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| Abstract: | High‐molecular‐weight partially hydrolyzed polyacrylamide nanocomposite (HPAMNC) weak gels were synthesized and evaluated for their flooding behaviors in oil‐recovery applications. The structure, morphology, and properties of the obtained HPAMNC samples and their weak gels were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). XRD patterns clearly proved the exfoliation of the montmorillonite (MMT) layers in the polymer matrix; this was consistent with TEM analysis. The morphology of the HPAMNC was proven to be in a cross‐wire aggregated form by SEM analysis. The viscosity‐average molecular mass of the obtained HPAMNC was approximately 8.51 × 106 under the optimized MMT load at 1.0 wt %. The flooding experiments showed that the oil‐recovery rates in sand pack tubes with low and high permeability were enhanced by approximately 35.1 and 46.2%, respectively. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42626. |
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| Keywords: | clay crosslinking gels nanostructured polymers |
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