Silver MPC?s Immobilized Co-initiators for Free Radical Polymerization
Waldemar WIŚNIEWSKI, Grzegorz NIKCZYŃSKI, Franciszek ŚCIGALSKI – Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
Please cited as: CHEMIK 2011, 65, 4, 261-266
In this report, the synthesis and the specific properties of silver nanoparticles (MPCs) immobilized by a number of mercaptoazole derivatives are described. All prepared MPCs were characterized by UV-Vis spectroscopy, FTIR spectroscopy, and TGA measurements.
The synthesized nanoparticles were applied as electron donors in photoinduced free radical polymerization, in combination with xanthene dye (5,7-diiodo-3-butoxy-6-fluorene, DIBF) used as sensitizer. Photoinitiation abilities of tested compositions were studied by measuring the rate of heat evolution during polymerization in thin film cured sample. The measurements were performed by measuring photopolymerization exoterms using photo-DSC apparatus. The reaction of PEGDA polymerization coinitiating by marcaptoazoles-
MPCs (MAz-MPCs) proceeds efficiently than in the presence of marcaptoazoles acting as free molecule.
Keywords: azoles, synthesis, nanoparticles, photoinitiation, radical polymerization