molecular design of modified polyacrylamide for the salt in canada

molecular design of modified polyacrylamide for the salt in canada
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  • Can polyacrylamide be modified by molecular dynamics simulation?
  • In our work, three kinds of functional monomers were selected to modify polyacrylamide (PAM) or partially hydrolyzed polyacrylamide (HPAM) by molecular dynamics simulation so as to achieve the stronger salt-tolerance of modified HM-HPAM.
  • Does Modified HM-HPAM have a stronger salt tolerance?
  • The results showed that modified HM-HPAM has a stronger salt tolerance and the salt tolerance increases gradually from HM-HPAM1 to HM-HPAM3 because the monomers with different steric hindrance would reduce the curliness of molecular chains and, consequently, improve the salt tolerance.
  • What is hydrophobically modified partially hydrolytic polyacrylamide?
  • With a similar method, hydrophobically modified partially hydrolytic polyacrylamide (HM-HPAM) has been constructed by randomly polymerizing the acrylamide, hydrolyzed acrylamide and three types of monomers. These polymers were denoted by HM-HPAM1/HM-HPAM2/HM-HPAM3 respectively.
  • What are the disadvantages of non ionic polyacrylamide (PAM)?
  • However, some disadvantages such as poor temperature resistance, pH, salt tolerance and shear capacity limit the application of non-ionic polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM), especially in petroleum industry [ 5 ].