Abstract
AbstractA series of seven chlorine‐containing polymers with widely ranging structures have been studied by time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) at high mass resolution. The prototypical positive ion spectrum of poly(vinyl chloride) has been analysed in detail to identify unambiguously all the components at each nominal mass up to m/z 130. For other polymers based on variously Cl‐substituted aliphatic hydrocarbons, the same Cl‐containing ions are observed but their relative intensities are different and characteristic. The relative intensities of common fragments containing one or two chlorine atoms in both positive ion spectra (RCl2+/RCl+) and negative ion spectra (Cl2−/Cl−) have been compared quantitatively with the bulk atomic chlorine concentration. These two ratios also show a remarkable correlation across the polymer series. An ion formation mechanism is proposed to explain the observed correlations. Copyright © 2002 John Wiley & Sons, Ltd.
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