The Raman and IR spectra of poly(L-lactic acid) in the amorphous and semicrystalline states were recorded from 3600 to 100 cm-'. Complete vibrational assignments are proposed. In the Raman spectra, the splittings of the vC=O stretching and the SCCO bend are characteristic of the crystalline phase and the presence of the two lines at 923 and 520 cm-' indicates a 10, helical conformation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.