Powerful tool for designing and developing materials Rapid photo / thermal - oxidative degradation analysis of polymeric materials “Micro-UV Irradiator” UV-1047Xe Japanese Patent: 4571892, US Patent: US7655185B2, EPC: EP174203

Features of Micro-UV Irradiator (UV-1047Xe) - GC/MS System Weather-induced degradation tests of polymeric material usually requires weeks or months to complete. Frontier Laboratory's new Micro-UV irradiator uses a xenon lamp to provide UV light intensity about 2000 times stronger than that of a deuterium lamp. This reduces the time necessary to acquire meaningful data reflecting the degradation of the sample. The effects of “weather” upon exposure to the photo / thermal - oxidative degradation process can quickly be evaluated. This information invaluably facilitate designing and developing new...

Applications Using UV/Py-GC/MS System Irradiation temp.: 60ºC, UV irradiation time: 3 hrs, sample size: 100 µg (powder), atmosphere gas: air, split ratio: 1/10, separation column, UA1, 30m (0.25ø) 0.5 µm, GC oven: 40 – 320ºC(20ºC/min), Thermal desorption after UV irradiation: 200ºC (5 min) 1. High density polyethylene (HDPE) Upon UV irradiation, various aldehydes were observed as degradation products. These compounds are considered to have been generated from the main chain scission of the polymer and successive oxidation caused by photo / thermal oxidation. The subsequent EGA analysis of the...

Applications Using UV/Py-GC/MS System 5. Polyacetal [Copolymer with ethylene oxide (EO)] EO: 1.8% EGA thermogram TIC of degradation products Irradiation temp.: 60ºC, UV irradiation time: 1 hr, thermal desorption after UV irradiation: no, other conditions: see HDPE above EGA thermogram Acetic acid, ethylene glycol (generated from side-chain elimination) and its formic acid ester were observed as volatile degradation products. The subsequent EGA analysis of the degraded polymer revealed that the peak profile of the degraded polymer had shifted significantly to higher temperatures, suggesting a...