I want to estimate the radius of gyration Rg of PEO polymer with Mw 4*10^6 a.m.u. and also the overlapping concentration c*, according to Rg=N^(3/5)*a, where a is the length of a monomer and N is the number of monomers of the polymer. The overlapping concentration c* is thus estimated as (Mw/NA)*Rg^(-3). The problem I met is how to determine the length of a monomer a?
Thank you Tomasz for the helpful suggestion. Actually I have read the reference paper where you get the relation of Rg and Rh. However the polymers used in the experiments of that paper (Macromolecules 1991,24, 5943-5947) has a maximum Mw smaller than 10^6, which dose not cover the current Mw that I use. Thus I am not sure if that scaling law still holds for Mw=4*10^6. I can try this first. Thanks again!
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Condensed Matter Physics
- Soft Matter