Cationic Hydrolytically Degradable Flocculants with Enhanced Water Recovery for Oil Sands Tailings Remediation
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Authors
Rooney, Thomas R.
Gumfekar, Sarang P.
Soares, João B. P.
Hutchinson, Robin A
Date
2016
Type
journal article
Language
Keyword
cationic flocculants , hydrolytic degradation , increased hydrophobicity , polyester macromonomers , surfmers
Alternative Title
Abstract
Micellar radical polymerization of a short-chain polyester macromonomer, polycaprolactone choline iodide ester methacrylate (PCLnChMA), is used to produce a new cationic flocculant that becomes more hydrophobic in response to hydrolytic degradation. The cationic tips of the comb-like poly(PCL3ChMA) accelerate the settling rate of oil sands tailings, while partial hydrolysis of the polyester grafts reveals the hydrophobic segments that reduce capillary suction time by 30%. This technology combines the material properties of polyesters with the productivity of radical polymerization to make dual functional flocculants with characteristics that can be easily tuned to control flocculation performance, such as polymeric cation density, hydrophobic content, and polymer architecture.
Description
This is the peer reviewed version of the following article: Rooney, T. R., Gumfekar, S. P., Soares, J. B. P., & Hutchinson, R. A. (2016). Cationic Hydrolytically Degradable Flocculants with Enhanced Water Recovery for Oil Sands Tailings Remediation. Macromolecular Materials and Engineering, 301(10), 1248–1254. doi:10.1002/mame.201600230, which has been published in final form at http://dx.doi.org/10.1002/mame.201600230. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Citation
Rooney, T. R., Gumfekar, S. P., Soares, J. B. P., & Hutchinson, R. A. (2016). Cationic Hydrolytically Degradable Flocculants with Enhanced Water Recovery for Oil Sands Tailings Remediation. Macromolecular Materials and Engineering, 301(10), 1248–1254. doi:10.1002/mame.201600230
Publisher
Wiley