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Preparation of Acrylamide Copolymers Containing Highly Hydrophobic Monomers and Study on Their Drag Reduction Properties

Dadkhah, Parsa | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55323 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ramazani Saadatabadi, Ahmad
  7. Abstract:
  8. With the rapid increase of energy consumption, energy problem has been a global issue, which must be faced with and solved. One way to prevent energy consumption is to reduce drag in the flow inside the pipes by using polymer additives; Because the Transportation of liquids using pipeline technology has its limitations, since turbulent flow inside the pipe involves a loss of energy. The net effect of this is that increasing the energy applied to the flow does not increase the flow rate. For this purpose, copolymers and terpolymers of hydrophilic acrylamide monomers along with hydrophobic styrene and hydrophilic maleic anhydride monomers were synthesized by reverse emulsion polymerization method and the properties of polymers were investigated using identification tests such as FT_IR, NMR, DLS, GPC, FE_SEM, viscometery and reometery. Then, the samples were used in drag reduction tests and the effect of factors such as concentration, flow rate and molecular weight, along with the amount of hydrophobic monomer and their associations to form secondary networks to prevent mechanical degradation of polymers, were studied. Results show that a sample with an optimal concentration of 75 ppm and an optimal amount of hydrophobic monomer, reduced the drag by 56%, which, compared to the sample in similar conditions of the amount of hydrophobic monomer, concentration and flow rate, with a molecular weight ratio of 6 to 1, could reduce the drag by 3 times
  9. Keywords:
  10. Drag Reduction ; Emulsion Polymerization ; Mechanical Degradation ; Acrylamide Copolymer ; Acrylamide Terpolymer ; Hydrophobic Associations ; Styrene Maleic Anhydride Copolymer

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