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- Title
Cationic Hydrolytically Degradable Flocculants with Enhanced Water Recovery for Oil Sands Tailings Remediation.
- Authors
Rooney, Thomas R.; Gumfekar, Sarang P.; Soares, João B. P.; Hutchinson, Robin A.
- Abstract
Micellar radical polymerization of a short-chain polyester macromonomer, polycaprolactone choline iodide ester methacrylate (PCL nChMA), 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.
- Subjects
MICELLAR catalysis; SHORT-chain fatty acids; CATALYTIC hydrolysis; POLYESTERS; POLYMERIZATION; MACROMONOMERS
- Publication
Macromolecular Materials & Engineering, 2016, Vol 301, Issue 10, p1248
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201600230