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Investigation of Highly Hydrophilic Monomer on Solubility and Viscosity of Polyacrylamide Solution

Jabari, Hossein | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53394 (03)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ramazani Saadatabadi, Ahmad
  7. Abstract:
  8. Although polyacrylamides and theirs modified polymers have an extremely application in the industry mechanical weakness, such as viscosity in salinity or high temperature cause this polymer loss your functional application. In recent years, many endeavors due as modified this polymer by hydrophobics monomers were done but unfortunately don’t have a significant result. Modified acrylamide monomer and hydrophobic mini-emulsion were survey Most used polymers, such as hydrolyzed polyacrylamide, are not able to high levels of salinity and high temperature of the reservoirs. Dr. Ramazani and theirs group use innovational idea of hydrophilic monomers for overcome to this problem. In this project, new types of microstructures based on modified acrylamide with hydrophilic groups (malic anhydride and 2-Acrylamido-2-methylpropane sulfonic acid monomers) and hydrophobic groups (alpha methyl styrene monomer) using inversible mini-emulsion were synthesized. The structure of the synthesized copolymer and terpolymers was investigated using methods of FT-IR and 'H NMR. The micro-structure and the particle-size of the terpolymer particles were studied with the scanning electron microscopy (FE-SEM) and differential light scattering (DLS) method and the results showed that the average particle size of 10 µm for synthesized polymers. The X-ray diffraction (XRD) results showed a completely amorphous structure for copolymer and terpolymers samples. As well, the rheological properties and behavior of the synthesized polymers solution under high temperature and salinity conditions using rotary viscometer and rheometric measurements spectrum (RMS). The intrinsic viscosity was measured using Ubbelhode capillary viscometer and then via Mark Houwink equations, the molecular weight of the terpolymer approximately was calculated. The molecular weight also was calculated thorough gel permeation chromatography (GPC) for AM/AMPS/AMS terpolymer with the value of 10.6 million Daltons that has a similar to using Ubbelhode capillary viscometer. The synthesized AM/AMS copolymer and AM/MA/AMS terpolymer not only showed resistant to ions, but also with increasing salinity, viscosity increased
  9. Keywords:
  10. Acryle Amide ; Acrylamide Terpolymer ; Rheological Properties ; Methylpropane Sulfonic Acid ; Inverse Emulsion Polymerization ; Enhanced Oil Recovery ; Alpha Methyl Styrene

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