Novel Orientation Techniques for the Preparation of High-Performance Materials from Semiflexible Polymers

A technique is described for postponing the formation of anisotropic domains in semiflexible polymers so as to better orient them along a common direction. A theory has been developed to provide a foundation for this approach and guidance on carrying it out experimentally, and is described in outline form. The primary advantage of this processing route is the improved mechanical properties accompanying the increased orientation. This is illustrated by increases in moduli and ultimate properties of films of some cellulosics, polyisocyanates, and the protein collagen in the form of gelatin.