Evaluation of field desorption mass spectrometry for the analysis of polyethylene
1996; American Chemical Society; Volume: 7; Issue: 10 Linguagem: Inglês
10.1016/1044-0305(96)00043-8
ISSN1879-1123
AutoresWilliam J. Evans, Donna M. DeCoster, John Greaves,
Tópico(s)Ion-surface interactions and analysis
ResumoField 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 chromatography. The repeat units and end groups were characterized by FD-MS, but it was demonstrated that accurate molecular weight distribution data cannot be obtained for polyethylene by FD-MS because there is mass discrimination against the higher molecular weight polymers.
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