Phase transitions in ultraoriented polyethylene fibers under moderate pressures: A synchrotron X-ray study

D.M. Rein, L. Shavit, R.L. Khalfin, Y. Cohen, A.E. Terry, S. Rastogi

    Research output: Contribution to journalArticleAcademicpeer-review

    18 Citations (Scopus)

    Abstract

    he effect of pressure on phase transformations of ultradrawn ultra-high-molecular-weight polyethylene (UHMWPE) fibers was examined by in situ X-ray diffraction measurements with synchrotron radiation. The mesomorphic hexagonal phase was metastable even at a relatively low pressure of about 100 bar. The effect of pressure on the melting transitions was larger than in chain-folded structures. The existence and metastability of the hexagonal phase is the basis of compaction technology of UHMWPE fibers in composite materials.
    Original languageEnglish
    Pages (from-to)53-59
    JournalJournal of Polymer Science, Part B: Polymer Physics
    Volume42
    Issue number1
    DOIs
    Publication statusPublished - 2004

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