Abstract
A method is described which enables the quantitative analysis of the depth distribution of different glass fiber components near the fiber surface. For this method plasma-based secondary neutral mass spectrometry is used. It is shown that several of these 10–30 μm diameter fibers have to be analyzed simultaneously and how the intensity-time profiles are converted into concentration-distance profiles. Two types of commercial glass fiber were investigated, a fiber of type A and a rock wool type of fiber. The fibers were analyzed in the as-received state and after treatments in strong acid or basic solutions. The as-received fibers show in part distorted profiles already due to a weathering effect, whereas the fibers treated in the different aqueous solutions display attack mechanisms which, depending on the conditions, involve ion exchange, network splitting and layer formation mechanisms.
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