Near infrared studies of polymer blends

The dependence of absorption in the near-infrared region of cellulose aceta te-polyaniline/camphorsulfonic acid blends on their conductivity and homoge neity has been studied. Thin films ( 10 to 100 mum) of the blends containin g various amounts of protonated polyaniline show very high absorption in th e NIR region. The absorption increases with increasing of conductivity and homogeneity of the sample.