Grafting of poly(acrylic acid) onto an aluminum surface.
Grafting of poly(acrylic acid) (PAA) onto an aluminum surface was successfully achieved by free radical polymerization of acrylic acid using typical radical initiators, benzoyl peroxide and 2,2'-azobisisobutyronitrile. Both spotlike and brush morphologies were achieved. A complete coverage of PAA on an aluminum surface was then achieved by using a thermal chemical vapor deposition process. The PAA thickness was determined by ellipsometry and the superficial chemical composition by X-ray photoelectron spectroscopy (XPS). Grazing angle Fourier transform infrared (FTIR) spectroscopy confirmed the presence of carboxylic acid groups on the surface, and the contact angle measurements revealed a decreasing free surface energy of aluminum due to the polymer surface covering.
Barroso-Bujans
Fabienne
F
Institute for Inorganic Chemistry, University of Saarland, 66041 Saarbruecken, Germany. fbarroso@ehu.es
Serna
Rosalia
R
Sow
Eva
E
Fierro
José L G
JL
Veith
Michael
M