| 초록 |
Polyimide (PI)/clay hybrids were synthesized using the in-situ solution intercalation method via poly(amic acid). The Na ion-exchanged clays Na+-saponite (SPT), Na+-mica (Mica), and Na+-montmorillonite (MMT) were used for the intercalation of PI polymer chains. Our dispersion results show that pristine SPT is more easily dispersed in a PI matrix than are MMT or Mica. PI nanocomposites were prepared with various SPT contents to examine the variations with SPT content in the range 0 to 1 wt% of the thermomechanical properties, morphology, and optical transparency of the nanocomposites. The PI films have excellent optical transparencies, and are almost colorless. However, the optical transparency of the PI hybrid films decreases slightly with increases in the clay content. The color intensities of the PI films were evaluated with a spectrophotometer. |
