cited by: stability of partially hydrolyzed polyacrylamides

cited by: stability of partially hydrolyzed polyacrylamides
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  • Which chemical species affect the stability of partially hydrolyzed polyacrylamide (HPAM)?
  • Depend-ing on injection rates, formation permeability, and well spacing, the polymers must be stable for many years at reservoir conditions. Two chemical species are known to affect stability critically for partially hydrolyzed polyacrylamides (HPAM): divalent cations and oxygen. Effect of Divalent Cations.
  • Do partially hydrolyzed polyacrylamides experience hydrolysis of amide side groups?
  • SPE J. 15 (02): 341–348. At elevated temperatures in aqueous solution, partially hydrolyzed polyacrylamides (HPAMs) experience hydrolysis of amide side groups.
  • What is thermal stability of water soluble polyacrylamide (PAM) and partially hydrolyzed polymers?
  • Thermal stability of water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers under various solution conditions have been studied utilizing Quantum Mechanics Density Functional Theory (DFT) computational modeling method.
  • Are HPAM polymers unstable at high temperatures?
  • HPAM polymers are known to be unstable at elevated temperatures if divalent cations are present (Davison and Mentzer 1982, Zaitoun and Potie 1983, Moradi-Araghi and Doe 1987, Ryles 1988). For temperatures above 60ºC, acrylamide groups within the HPAM polymer experience hydrolysis to form acrylate groups.