temperature tolerant and salt resistant polyacrylamide at chile

temperature tolerant and salt resistant polyacrylamide at chile
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  • Why do Quaternary copolymers and terpolymers show good resistance to temperature and salt?
  • The electrostatic repulsion between the groups facilitates the extension of molecular chains, and hydrogen bonding facilitates the enhancement of the bonding strength between molecules and keeps the molecular structure stable. So the quaternary copolymer and terpolymer as a whole show good resistance to temperature and salt. Figure 3.
  • What are the temperature and salt resistance mechanisms in viscosity-enhancing copolymers?
  • The temperature and salt resistance mechanisms of the characteristic functional groups in viscosity-enhancing copolymers are as follows. (1) Hydrophobic alkyl chains: In aqueous solutions, hydrophobic alkyl linkage absorbs heat and increases entropy, which is easy to occur under high-temperature conditions.
  • What is the mechanism of temperature and salt resistance in low-interfacial-tension surfactants?
  • The mechanism of temperature and salt resistance of the characteristic functional groups in low-interfacial-tension surfactants is as follows. (1) Ethoxy: Ethoxy is weakly hydrophilic and is not affected by electrolytes.