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Raman studies of crystalline and amorphous poly( p ‐phenylene sulfide) films
Author(s) -
Pan Z.,
Savard T.,
Wicksted J. P.
Publication year - 1992
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.1250231107
Subject(s) - raman spectroscopy , amorphous solid , materials science , sulfide , phenylene , analytical chemistry (journal) , trimer , infrared , polymer , crystallography , chemistry , dimer , optics , organic chemistry , composite material , physics , metallurgy
Raman spectra of biaxial crystalline and amorphous poly( p ‐phenylene sulfide) (PPS) films were recorded using the micro‐Raman technique. The Raman spectra of its corresponding trimer and tetramer from KBr pellets and the infrared spectrum from the PPS film were also recorded in order to elucidate the normal vibrational modes in PPS. The difference in the Raman spectra between biaxial and amorphous films is presented. New modes are observed at 840 and 919 cm −1 in the polymer films which had been missing in a previous study and the phenylene—sulfur stretching vibrations in the PPS chain, which are used to characterize the peak at 1076 cm −1 , are discussed. It was also found that the broad fluorescence background, when excited at 514.5 nm, reaches its peak value at about 598 nm for the biaxial film and at about 616 nm for the amorphous film.