Figure 11

Conformational models of polyoxyethylene (PEO) chains [[9]]. a) “zig-zag” planar “meander” (Staudinger, H., 1960; Kehren, M. and colab., 1957); b) “zig-zag” “meander”, in contraction-relaxation equilibrium; c) stratified “zig-zag”; d) “zig-zag” “meander”, stratified and intercalated in contraction-relaxation equilibrium.