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

Dmitry M. Rein; Liron Shavit; Rafail L. Khalfin; Yachin Cohen; Ann Terry; Sanjay Rastogi

doi:10.1002/polb.10725

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

Dmitry M. Rein, Liron Shavit, Rafail L. Khalfin, Yachin Cohen, Ann Terry, Sanjay Rastogi

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20 Scopus citations

Abstract

The 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 language	English (US)
Pages (from-to)	53-59
Number of pages	7
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	42
Issue number	1
DOIs	https://doi.org/10.1002/polb.10725
State	Published - Jan 1 2004

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abstract = "The 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.",

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AU - Shavit, Liron

AU - Khalfin, Rafail L.

AU - Cohen, Yachin

AU - Terry, Ann

AU - Rastogi, Sanjay

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N2 - The 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.

AB - The 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.

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JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

IS - 1

ER -

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

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