National Research Institute of Police Science, Fuzoku kanteijo, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
Forensic Sci Int. 2011 Mar 20;206(1-3):136-42. doi: 10.1016/j.forsciint.2010.07.029. Epub 2010 Aug 16.
Pressure sensitive adhesives (PSAs) of colorless and transparent oriented polypropylene (OPP) adhesive tapes were analyzed by pyrolysis/gas chromatography/mass spectrometry (Py/GC/MS). The PSAs were acrylic and rubber-based PSAs and the tapes were classified according to total ion current (TIC) chromatograms of the PSAs. The main pyrolyzates of the acrylic PSAs were decomposition products of monomers, monomers, dimmers and trimers. Those of the rubber-based PSAs were the monomers of elastomers, and subtle peaks observed were the pyrolyzates of tackifiers and volatile additives in the TIC chromatograms. Small differences were observed among the classifications of the acrylic PSAs by Py/GC/MS, attenuated total reflection Fourier transform infrared (ATR FT-IR) and Matrix-assisted laser desorption/ionization mass spectrometry (MALDI/MS). The classification of the rubber-based PSAs by Py/GC/MS and that by ATR FT-IR were the same, and a slight difference was observed between those by Py/GC/MS and MALDI MS.
通过热裂解/气相色谱/质谱联用分析了无色透明定向聚丙烯（OPP）胶粘带的压敏胶（PSA）。PSA 为丙烯酸和橡胶基 PSA，根据 PSA 的总离子流（TIC）色谱图对胶带进行分类。丙烯酸 PSA 的主要热裂解产物为单体、单体、二聚体和三聚体的分解产物。橡胶基 PSA 的主要热裂解产物为弹性体的单体，TIC 色谱图中观察到的细微峰为增粘剂和挥发性添加剂的热裂解产物。通过热裂解/气相色谱/质谱联用、衰减全反射傅里叶变换红外光谱（ATR FT-IR）和基质辅助激光解吸/电离质谱（MALDI/MS）分析，丙烯酸 PSA 的分类略有不同。通过热裂解/气相色谱/质谱联用和 ATR FT-IR 对橡胶基 PSA 的分类相同，但通过热裂解/气相色谱/质谱联用和 MALDI MS 对其的分类略有不同。
