Dear collegues, I'm trying to understand whether chaotic mass transfer due to diffusion or a possible flow, induced by the temperature gradient, is prevailing in my experiments, that I conduct for pure linear almost monodisperse polymer melt doped with some small molecules below the glass transition temperature of polymer.

For this I need to know either the order of a Soret coefficient in such systems for the dopant (not polymer), or the order of its (dopant) thermodiffusion coefficient below polymer Tg.

I'd highly appreciate any recommendations!