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Vibrational analysis of poly(L‐lactic acid)
Author(s) -
Kister G.,
Cassanas G.,
Vert M.,
Pauvert B.,
Térol A.
Publication year - 1995
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.1250260409
Subject(s) - raman spectroscopy , crystallinity , amorphous solid , lactic acid , chemistry , vibrational spectrum , crystallography , phase (matter) , materials science , analytical chemistry (journal) , organic chemistry , physics , bacteria , optics , biology , genetics
Abstract The Raman and IR spectra of poly( L ‐lactic acid) in the amorphous and semicrystalline states were recorded from 3600 to 100 cm −1 . Complete vibrational assignments are proposed. In the Raman spectra, the splittings of the v C=O stretching and the δCCO bend are characteristic of the crystalline phase and the presence of the two lines at 923 and 520 cm −1 indicates a 10 3 helical conformation.