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Positive secondary ion mass spectrum of poly(methyl methacrylate): a high mass resolution ToF-SIMS study

✍ Scribed by Briggs, David; Fletcher, Ian W.; Gon�alves, Nancy M.

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 114 KB
Volume: 29
Category: Article
ISSN: 0142-2421
DOI: 10.1002/(sici)1096-9918(200005)29:5<303::aid-sia868>3.0.co;2-5

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✦ Synopsis

The positive SIMS spectrum of poly(methyl methacrylate) (PMMA) has been obtained with a mass resolution in excess of 8000 and all the components assigned up to m/z 200 based on accurate mass measurements. Aspects of the interpretation of the spectrum, previously based on quadrupole SIMS data from a number of acrylic polymers, need to be revised significantly. In particular, the spectrum is dominated by oxygencontaining fragments derived from oligomeric units rather than hydrocarbon fragments derived from the polymer backbone. To aid further the understanding of the fragmentation of acrylic polymers, a less-detailed study of poly(methyl acrylate) has also been carried out.

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