The extent of unwanted infrared photoacoustic signals from polymer sampling tubings exposed to ultraviolet radiation

D. Bicanic, A. Solyom, G. Angeli, H. Wegh, M. Postumus, H. Jalink

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The extent of unwanted photoacoustic (PA) signals due to volatiles released from various polymer tubing materials [transparent, red and black polyethylene (PE), polymer of tetrafluorethylene (PTFE) and copolymer of tetrafluorethylene and hexafluorethylene (FEP)] when exposed to 245 nm radiation was determined in spectral region of CO 2 laser. The magnitude of PA signal decreases/increases when UV radiation is turned off/on suggesting formation of volatiles as a results of tubing/UV light interaction. The data obtained in this study suggests the necessity to shield polymer tubings. Generated volatiles were also analyzed independently by gas chromatography and mass spectrometry.
Original languageUndefined/Unknown
Pages (from-to)637-644
JournalInfrared Physics & Technology
Issue number4
Publication statusPublished - 1995

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