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Study of Some Effective Parameters on Uv Curable Coating Containing Nano Silver

Labbani Motlagh, Akram | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44170 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Mahmoodi Hashemi, Mohammed; Bastani, Saeed
  7. Abstract:
  8. Antibacterial coatings are a branch of paints and coatings industry that has a wide application from Clothing and Textiles to Floor and Medical instrument. Different antibacterial agents such as silver, titanium dioxide, zinc oxide, gold, chitosan, Silicon dioxide, Magnesium hydroxide and carbon nanotubes have been used. UV curable coatings are economic and environmentally friendly coatings and they are one of the fastest growing segments in the paint and coatings industry. Many studies have been conducted on UV curable coatings and their properties. Among different resins, The UV curable polyurethane offer properties such as: Excellent hardness, High gloss, good chemical and weather resistance, good adhesion and good film forming properties. In this thesis, the synergistic effect of nano sized Ag/TiO2 particles on some mechanical, optical and antibacterial properties of UV-curable clear coatings was optimized by using experimental design. In this research, the formulation and optimization procedure is carried out based on experimental design in response surface method. By this method, different amount of nano Ag (10nm) and nano TiO2 (10nm, 30nm) were selected at different levels. Different samples were prepared by combination of resin, monomers, additives and selected nano materials. Some mechanical and optical properties such as abrasion resistance, scratch resistance, surface hardness, gloss and opacity of coating were evaluated also antibacterial properties on geram negative bacteria (Escherichia Coli) were investigated. To study the effect of nano particles on curing process, morphology and roughness of the surface, infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used respectively.The results of this study show positive impact of the presence of nano TiO2 and nano Ag in the coating
  9. Keywords:
  10. Antibacterial Properties ; Polyurethane ; Silver Nanoparticles ; Titanium Dioxide Nanoparticles ; UV Curable Coating

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