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Orientation des Phases par Etirage dans le Polyéthylène: Etude par Effet Raman
Author(s) -
Luu Dang Vinh,
Cambon Louis,
Lafont Robert
Publication year - 1980
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250090310
Subject(s) - perpendicular , raman spectroscopy , materials science , orthorhombic crystal system , monocrystalline silicon , orientation (vector space) , crystallography , polarization (electrochemistry) , chemistry , crystal structure , optics , physics , silicon , geometry , optoelectronics , mathematics
Research on the polarization of bending vibrations of CH 2 makes it possible to deduce the orientation of the different phases of polyethylene. When the sample is stretched, the orthorhombic monocrystalline phase becomes parallel to the stretching axis but the other two phases take a more or less perpendicular direction.