In this communication we demonstrate the feasibility of determining the orientational distribution functions of various morphological components in ultrahigh molecular weight polyethylene fibres by two-dimensional rotor-synchronized 13C cross-polarization/magic angle spinning nuclear magnetic resonance (n.m.r.) techniques. For comparative purposes we have also included a drawn polyethylene fibre of normal molecular weight. The results showed that these fibres contain two crystalline components, designated C~ and C2, and an amorphous (non-crystalline) component, A. Order parameters and orientational distribution functions of these components can be obtained through analysis of the two-dimensional ' 3C n.m.r, spectra.
Посилання на статтю:
Two-dimensional 13C n.m.r, studies of the morphology and orientational order in gel-spun ultrahigh molecular weight polyethylene fibres / Der-Lii Tzou, Tai-huang Huang*, A. S. Abhiramant and Prashant Desai // Polymer. – 1992. – Vol 33. – P. 426-428.