Abstract
The photochromic behaviour of spiropyran derivatives dissolved in a polymer matrix or incorporated in the backbone of bulk polymers is discussed. The deviations from first order kinetics of the thermal decolouration in glassy specimen are attributed to both influences of local free volume and of different merocyanine isomers during the decolouration reaction. The application of the free volume theory in terms of a WLF-equation is proven for the first time in these systems and conclusions are drawn on chain segmental mobility.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
