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- W270158024 abstract "Abstract : Raman scattering is used in the study of hydrostatically extruded polypropylene as a function of the extrusion ratio. At a high extrusion ratio. At a high extrusion ratio, polypropylene gives rise to Raman spectra with a well characterized polarization behavior. This result has been used to supplement the symmetry assignments of normal vibrations in polypropylene. The intensity ratios and depolarization ratios have also been measured as a function of the extrusion ratio. The c-axis alignment of the polymer chain has been found to increase with the increase of the extrusion ratio. At the extrusion ratio equal to 6.3, about 90% of the polymer chains have been found to align along the direction of extrusion (the c-axis). (Author)" @default.
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- W270158024 date "1977-06-08" @default.
- W270158024 modified "2023-09-27" @default.
- W270158024 title "Raman Scattering Studies of Chain Orientation in Hydrostatically Extruded Polypropylene." @default.
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