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为获得超高分子量聚乙烯的超高取向性，利用准稀溶液速冷解缠方法可使其λｍ４００，力学性能大幅度提高，但距离链的理论强度还有一定差距，ＮＭＲ的相结构研究表明其中仍残存一定量的界面层及非晶部分。从缠结链角度来看，其分子链的解缠并不能达到完全。根据Ｒａｍａｎ及ＮＭＲ研究结果讨论该膜在拉伸取向前后及经热处理后链缠结的形成及解缠结问题。
In order to obtain ultrahigh molecular weight polyethylene ultra-high orientation, the use of quasi-dilute solution speed unwinding method can make its λm 400, a substantial increase in mechanical properties, but the distance from the theoretical strength of the chain there is a certain gap, NMR phase structure Studies have shown that there is still a certain amount of residual interface layer and amorphous parts. From the perspective of intertwined chain, the unwinding of its molecular chain can not be achieved completely. According to the results of Raman and NMR studies, the film formation and solution disentanglement problems of the films before and after stretching orientation and heat treatment were discussed.