low molecular weight polyacrylamide-based polymers in singapore

low molecular weight polyacrylamide-based polymers in singapore
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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.
  • Which amide group is hydrolyzed in polyacrylamide?
  • The functional amide group in polyacrylamide is hydrolyzed at 80–90°C [ 4 ]. The polymer solution must be stable in harsh conditions of salinity and temperature. Acrylamide-based polymers suffer from some deficiencies such as their rapid hydrolysis, facile thermal degradation, and undesirable properties.
  • Is acrylamide a radioactive polymer?
  • No uptake of acrylamide by the plants or any other form of radioactivity was observed. The molecular weight of the polymer was drastically reduced when extracted from the soil matrix and was degraded biologically by at least 20% in two years, giving a degradation half-life of 5.4 years .
  • How to improve degradable polyacrylamide or hydro soluble polymers?
  • From a chemical point of view, one of the most interesting processes to obtain improved degradable polyacrylamide or hydro soluble polymers is the initiation of polymerization with Ce 4+ ions using an alcohol as reducing agent.