Abstract
AbstractThe Raman spectra of predominantly trans ‐ 1,4‐polychloroprenes are presented. Spectra were recorded of polymers prepared by free radical emulsion techniques in the temperature range −20 to +40°C in both the solid state and in CS2 solution. Spectral changes characteristic of the crystalline and amorphous regions of the polymers have been identified. Measurements of the relative broadness of the 1007 cm−1 Raman line, which is associated with the C‐C stretching frequency in the main chain, have been made and correlated with the amorphous content of the polymer. Extrapolations of these results indicates that polymers prepared in the range 50–60°C should be completely amorphous elastomeric materials.
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