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Poster Presentations
Day 2, June 11（Tue.） Room P1 (Multipurpose Hall)・Room P2 (Conference Room 101+102)
- 2P-12
Visualization of Photodegradation Reaction Products of Light Stabilizers in Polymer Film By t-SPESI-Mass Spectrometry Imaging
(1Osaka Univ., 2Toray Research, 3Keio Univ.)
oTsuyoshi Akiyama1,2, Yoichi Otsuka1, Mengze Sun1, Akiyoshi Hirayama3, Michisato Toyoda1
Mass spectrometry imaging of a polyethylene film containing Chimassorb® 944 as the HALS (hindered amine light stabilizer) with photodegraded areas was performed using t-SPESI (tapping-mode scanning probe electrospray ionization) after optimizing the extraction solvent with LESA (liquid extraction surface analysis). We found that the optimal extraction solvents differ between LESA and t-SPESI. We discovered that Chimassorb® 944 was localized in the non-irradiated area compared to the light-irradiated area, and its oxidative decomposition product and the low molecular weight component were localized in the light-irradiated area and intermediate area.