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Surface Coating
Surface Coating
Origin of place United States
Model
Supplier Sepax Technologies, Inc.
Price
Hits 1316
Updated 4/3/2013
  • Product Detail
  • Company Profile
Sepax Technologies is a leader in surface chemistry technology. Our technologies on surface synthesis can make the thin films from monolayers to polymer layers with the surface structure well defined and the thickness well controlled. The polarities and the functionalities of the coatings could be readily designed to meet various applications. Sepax offers custom-synthesis of surface coatings for capillary tubes, micro-channels and nano-particles.
Synthesis of well defined surfaces

Monolayer
Hydrophobic
Examples: C30, C18, C8, C4, Phenyl, Fluoro, etc.

Hydrophilic
Examples: Cyano, pyridine, amino, ethylene glycol, diol, imidazole, etc.

Ionic
Examples: Sulfonate (-SO3H, SCX), Carboxylate (-COOH, WCX), Quaternary ammonium (-NR3+, SAX), Tertiary amine (-NR2, WAX), etc.

Mixed Monolayer
Examples: Hydrophobic and Ionic (-SO3H, or -COOH, or -NR3+, or -NR2), etc.

 

  
Polymer Layer
Uniqueness
  • Well controlled thickness: 1-100 nm
  • Well controlled polarity from hydrophobic to hydrophilic
    Examples: Polystyrene, a highly hydrophobic surface; Polyacrylamide, a highly hydrophilic surface
  • Well controlled chemical properties from neutral to ionic
    Examples: Polyethylene glycol, a neutral surface; Polymer functionalized with DEAE groups, a weak anionic surface
  • Well controlled polymer chain density
  • Mixed polymer layers；Examples: Hydrophobic and Ionic (-SO3H, or -COOH, or -NR3+, or -NR2), etc.

 

 

Substracts to Grow Organic Thin Films

Flat Surface
Examples: Si wafers, Glass slides, TiO2 plates, Au coated glass plates, Plastics sheets, Contact lens, etc.

Particles
Examples: SiO2 micro-particles, PS/DVB particles, Au nanoparticles, Ag nanoparticles, TiO2 nano- and micro-particles, etc.

Porous materials
Examples: Porous SiO2 particles, Porous PS/DVB particles, Porous Polyacrylate particles, Polymer and Glass Membranes, etc.

   

Applications

  • Anti-fouling；Protein resistance；Chromatographic separation；Micro-channel separation；Protein array；Membrane separation for biological molecules；Nanoparticle functionalization；Contact lens

 

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