Wj. Evans et al., EVALUATION OF FIELD DESORPTION MASS-SPECTROMETRY FOR THE ANALYSIS OF POLYETHYLENE, Journal of the American Society for Mass Spectrometry, 7(10), 1996, pp. 1070-1074
Field desorption mass spectrometry (FD-MS) has been evaluated for the
analysis of low molecular weight polyethylene by using samples in the
molecular weight range 600-2000 u as determined by gel permeation chro
matography. The repeat units and end groups were characterized by FD-M
S, but it was demonstrated that accurate molecular weight distribution
data cannot be obtained for polyethylene by FD-MS because there is ma
ss discrimination against the higher molecular weight polymers.