Domain structure of cellulose triacetate

The topology of the surface of thin films obtained from cellulose triacetate solutions has been studied using electron microscopy. The domain structure of the physical network of macromolecules (percolation cluster) with the maximum size L ≈ 30 nm of regions with a local orientational order has been established. With an increase in the volume fraction Ω of the cluster to the critical value Ω = 0.91, repacking of domains takes place, which is connected with a decrease in the parameter Ω, L doubling bifurcation of the size L , and formation of regions of long-range orientational order: the mesophase of the polymer.