Title of article :
Effect of polyimides with different ratios of para- to meta- analogous fluorinated diamines on relaxation process
Author/Authors :
Qu، نويسنده , , Wenli and Ko، نويسنده , , Tze-Man and Vora، نويسنده , , Rohit H. and Chung، نويسنده , , Tai-Shung، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2001
Abstract :
We present a comparative study on the optical storage characteristics of mixed Langmuir–Blodgett (LB) films from azobenzene polymers and cadmium stearate. The amplitude of induced birefringence depends on the azobenzene content in the polymer as well as on the rate of trans–cis–trans isomerization. Structural factors such as main chain rigidity seem to play an important role in the remaining stored information.
Keywords :
polyimide , ?-Relaxation , Dynamic mechanical analyzer and dielectric analyzer
