CF-252 PARTICLE DESORPTION MASS-SPECTROMETRY OF PHOTOOXIDIZED POLYSTYRENE Academic Article

abstract

• Cf252 particle (plasma) desorption mass spectra are presented for polystyrene surfaces before and after exposure in air to UV light. The photooxidation produces changes observed in both positive and negative ion spectra. Oxygen incorporation produces a slight increase in intensity of m/z+ 18 and 19 (H2O+ and H3O+) and m/z 16 and 17 (O and OH). Also, the relative intensity of m/z+ 91 decreases after photooxidation and is interpreted as the formation of a bond alpha to the benzene ring. New peaks are detected at m/z+ 226, 227 and 331, and are tentatively assigned to hydroperoxidecontaining structures. Other changes in the spectrum include the increase in intensity of m/z+ 77 and 105 arising from easily ionized fragments of the oxidation products of polystyrene. Copyright 1990 John Wiley & Sons Ltd.

authors

• Schweikert, Emile

published proceedings

• SURFACE AND INTERFACE ANALYSIS

author list (cited authors)

• QUINONES, L., & SCHWEIKERT, E. A.

citation count

• 4

complete list of authors

• Quiñones, Leticia||Schweikert, Emile A

publication date

• September 1990

publisher

• Wiley  Publisher

published in

• Surface and Interface Analysis  Journal

Digital Object Identifier (DOI)

• 10.1002/sia.740150902

start page

• 503

end page

• 508

volume

• 15

issue

• 9

URL

• http%3A%2F%2Fdx.doi.org%2F10.1002%2Fsia.740150902