The Structure of Ultra-High Modulus Polymers

The high deformation ratios imposed on polyethylene also lead to a high degree of non-crystalline orientation in solid phase deformed material, as indicated by the orientation of the non-crystalline component in the broad line NMR 119), and the 

In POM a careful examination of WAXS and SAXS measurements on a wide range of drawn samples, showed that the average crystal length, even for the highest modulus material was only comparable with the long period, 23). Again it must be concluded that the crystalline bridge model is not applicable. 

It is only in the case of high modulus polyethylene produced by tensile drawing or hydrostatic extrusion that extensive structural studies have been undertaken. For these materials it was found in agreement with previous studies by Peterlin 

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