Kentgens, A.p.m.; De Boer, E.; Veeman, W.s.:

Super-slow motions in crystalline polyoxymethylene. A complete elucidation using 2D solid state NMR.

In: Integr.Fundam.Polym.Sci.Technol.--2,
Rolduc (1988), S. 164-168
Buchaufsatz / Kapitel / Fach: Chemie
Abstract:
Super-slow motions in the cryst. parts of poly(oxymethylene) were detected and fully characterized by the detn. of the 13C-NMR chem. shift tensor in the mol. via 2-dimensional (D) correlation of dipolar interactions and chem. shifts. The helical chains performed a screw-like rotation over +-200 Deg with activation energy of 20 +- 5 kcal/mol.