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Raman Spectrum of the High Pressure Phase of Polyethylene

R. Eckel, H. Schwickert, M. Buback, G.R. Strobl. Polymer Bulletin 6, 559-564 (1982)

Abstract

The Raman spectrum of the hexagonal high pressure phase of polyethylene was measured at 5.2 kbar and 240°C, using a hydrostatic high pressure cell. The spectrum is largely identical to that obtained for the melt. This result indicates that the conformational short range order in the hexagonal phase remains melt —like and is not modified by the overall straightening of chains.

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