Evaluation of Oblique Light-Induced Degradation of Indoor Line Tape by Mass Spectrometry (4): Differential Analysis of Outgassed Components Before and After Photodegradation by TD–GC/MS
MSTips No. 533
We have reported the compositional analysis of the individual layers constituting indoor line tapes—namely, the base, adhesive, and colored layers—using direct EGA‑MS and DEI‑MS. In studies of the colored layer, comparative analysis before and after application revealed the disappearance of Pigment Yellow 14, an organic pigment originally present as a colorant. These findings suggest that the whitening observed under oblique lighting after application may be attributable to the degradation or loss of this pigment.
In this study, it was hypothesized that material degradation under oblique-light conditions would affect the composition and release behavior of outgassed components. Accordingly, differential analysis of outgassed components before and after oblique-light degradation was carried out using thermal desorption–GC/MS.