Protonated polyaniline can serve as a near-infrared radiation absorbing add
itive to conventional polymers, such as polystyrene, poly(methyl methacryla
te), and poly(vinyl chloride), etc. Addition of less than 5 wt.% of protona
ted polyaniline causes total drop of transmittance of the material in the n
ear-infrared region. (C) 1999 Elsevier Science S.A. All rights reserved.