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PVDF/SiO2 Nanocomposite Coating with Different Wettability in Contact with Oil and Water for phase Separation Propose

Hassani, Mohammad Ebrahim | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47491 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Dolati, Abolghasem
  7. Abstract:
  8. increased cohesion up to 4H pencil. Results of immersion test in water showed stability of coatings. Polarization test in naphtha and water mixture for stainless steel, copper and aluminum meshes demonstrated 98.89%, 86.25% and 66.6% protection efficiency respectively. In order to study of oil and water separation efficiency, mixtures of water and naphtha with different content of naphtha were used. Separation test for 200μm St.St mesh in different slopes demonstrated that changing of slop increase separation efficiency up to 95.5% for water and up to 100% for naphtha. Separation test for meshes with different pore size demonstrated that meshes with small pore size are more appropriate for water treatment and meshes with large pore size are more appropriate for oil treatment. Also increasing in naphtha content more than 50% improved efficiency and speed of naphtha separation. Effect of mixing and service time during Separation test is studied. The results showed increasing in mixing time decrease efficiency of separation down to 8% for water and down to 18% for naphtha and increasing in service time decrease separation efficiency down to 18% for water and 30% for naphtha
  9. Keywords:
  10. Hydrophobicity ; Silica Nanoparticles ; Wettability ; Polyvinylidene Fluoride (PVDF) ; Steel Mesh ; Stainless Steel ; Oleophilic

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