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  • What is high molecular weight polyacrylamide (PAM)?
  • Provided by the Springer Nature SharedIt content-sharing initiative High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.
  • What is the ionicity of Apam and CPAM?
  • When two or three of the eight amido functional groups are replaced, the ionicity of the APAM or CPAM obtained is 25.0% or 37.5%, Na ions were added to APAM and Cl ions to CPAM to compensate for the charge of the ionized PMA molecules. The montmorillonite model is consistent with the Na-rich montmorillonite sample used in the QCM-D experiments.
  • Can high molecular weight Pam be used for degradation?
  • This paper provides a short review of current applications of high molecular weight PAM, including the potential for PAM degradation by chemical, mechanical, thermal, photolytic, and biological processes.
  • Does CPAM reduce water adsorption density on Na-MMT surface?
  • The adsorption of CPAM reduces highly the amount of water adsorption density on Na-MMT surface than PAM and APAM. CPAM adhesion is high and more accelerated by the positive charge of its molecules with the negative charge of Na-MMT. Polymer molecules adsorption reduces the vertical distance between polymer and the surface of MMT particles.