Hu, Z, Haruna, M, Gao, H et al. (2 more authors) (2017) Rheological Properties of Partially Hydrolyzed Polyacrylamide Seeded by Nanoparticles. Industrial & Engineering Chemistry Research, 56 (12). pp. 3456-3463. ISSN 0888-5885
Abstract
This work aims to improve the rheological properties of partially hydrolyzed polyacrylamide (HPAM) for enhanced oil recovery by using silica (or silicon dioxide, SiO₂) nanoparticles (NPs). Novel aqueous HPAM-based SiO₂ nanocomposites were formulated, and their rheological properties were investigated under different salinities, temperatures, and aging times. The results show that the inclusion of silica NPs significantly improved the viscosity and viscoelastic properties of HPAM especially under high temperature and high salinities. The NP/HPAM hybrid showed an impressive thermal stability at T = 80 °C after 12 days, and the viscosity reached ∼5 times that of HPAM at 0.8 wt % NP loading. The Fourier transform infrared spectral data confirmed that the formation of a hydrogen bond between the carbonyl groups in HPAM and the silanol functionalities on the surface of silica NPs contributed to the improved performance. The oscillation test indicated that seeding SiO₂ remarkably facilitated the cross-links among polymer molecules and made the hybrids more elastically dominant. For a given HPAM concentration, it was observed that there was a critical nanoparticle concentration, which may indicate the absorption status of SiO₂ NPs onto HPAM, and the salinity also affected the viscosity value.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2017, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Research, copyright (c) American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see: https://doi.org/10.1021/acs.iecr.6b05036 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 May 2017 11:08 |
Last Modified: | 27 Feb 2018 01:39 |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/acs.iecr.6b05036 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:116506 |