Chemistry Reference
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Fig. 1.7 UV/vis absorbance of
PANPAC as a function of polymer-
ization time.
Fig. 1.8 FT-IR spectrum of a PANPAC, containing 32 mol% acetylene;
the polyacetylene segments contain ca. 95% trans configuration (bot-
tom); PAN (top).
Stretch-oriented poly(vinyl alcohol) films which contain iodine are essential
light polarizing components in today's liquid crystal displays (LCDs). They do,
however, suffer from the inherent diffusion and sublimation problems of iodine
and its chemical aggressiveness. The latter also prevents realization of new LCD
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