Article

Covalent immobilization of chitosan on surfaces with anchoring layers of poly(glycidyl methacrylate) and maleic anhydride copolymers

Polymer Science Series B (impact factor: 0.56). 04/2012; 51(9):416-421. DOI:10.1134/S1560090409090140 pp.416-421

ABSTRACT The method for producing chitosan coatings on solid surfaces with anchoring layers of poly(glycidyl methacrylate) and maleic
anhydride copolymers has been proposed. It is shown that, owing to a high reactivity of epoxy and anhydride groups, the efficiency
of immobilization and the stability of the coatings are considerably higher than those prepared by the conventional method
of chitosan grafting onto the surface modified by poly(acrylic acid). The properties of chitosan coatings are examined via
atomic force microscopy, X-ray photoelectron spectroscopy, ellipsometry, and electrokinetic measurements. Depending on the
anchoring layer used, the total thickness of the coatings is 6–16 nm with an rms roughness less than 1.2 nm, while the isoelectric
points of the surfaces modified with chitosan are located in the pH range 5–6.

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Keywords

anchoring layer
 
anchoring layers
 
atomic force microscopy
 
chitosan
 
chitosan coatings
 
chitosan grafting
 
conventional method
 
electrokinetic measurements
 
epoxy
 
poly(acrylic acid)
 
poly(glycidyl methacrylate)
 
rms roughness
 
solid surfaces
 
total thickness
 
X-ray photoelectron spectroscopy