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Continuous wave laser induced degradation of polystyrene monitored by time‐of‐flight mass spectrometry
Author(s) -
Coloff Stanley G.,
Vanderborgh Nicholas E.
Publication year - 1973
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210071210
Subject(s) - polystyrene , degradation (telecommunications) , mass spectrometry , laser , time of flight , irradiation , fragmentation (computing) , styrene , chemistry , ion , oxygen , time of flight mass spectrometry , mass spectrum , nitrogen , analytical chemistry (journal) , materials science , chromatography , optics , polymer , organic chemistry , copolymer , telecommunications , physics , computer science , nuclear physics , operating system , ionization
The laser induced degradation of polystyrene within the ion‐source housing of a time‐of‐flight mass spectrometer is described. A low power, CO 2 laser was used to produce a steady state flux of degradation products. This method permits the use of normal recording techniques. The degradation of polystyrene is reported using this technique. Evidence is presented that the monomer is ejected from the irradiated surface. Degradation in the presence of oxygen and nitrogen is also described. Oxygen promotes the fragmentation of styrene while nitrogen shows the opposite effect.