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Surface modifications of some nanocomposites containing starch

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: M. C. Pascu, M. C. Popescu, C. Vasile

Editorial: J. Phys. D. Appl. Phys., 41 (17) , p.175407, 2008.

Rezumat:

Polymer-layered silicate nanocomposites have attracted strong interest in today’s materials
research, due to the possible impressive enhancements of material properties, comparatively
with those of pure polymers. Several starch/poly(vinylalcohol)/montmorillonite
nanocomposites have been subjected to surface modification by physical treatments such as
dielectric barrier discharge (DBD) exposure and coating with proteins (albumin) or
polysaccharides (chitosan), for improving their biocompatibility. Untreated and treated
surfaces have been comparatively studied by contact angle measurements, FT-IR and
2D-FT-IR spectroscopy and optical microscopy. It has been established that enhancement of
the surface characteristics depends on the type and number of incorporated nanoparticles as
well as on the treatment applied. Coupling of DBD exposure and coating techniques appears
to be highly efficient.

Cuvinte cheie: starch/poly(vinylalcohol)/montmorillonite nanocomposites, surface modification, dielectric barrier discharge