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Fourier transform infrared micro spectroscopy mapping studies of weathered PVC capstock type formulations. II: Outdoor weathering in pennsylvania
Author(s) -
Garcia Dana,
Black Janine
Publication year - 1999
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10313
Subject(s) - fourier transform infrared spectroscopy , weathering , materials science , infrared , degradation (telecommunications) , spectroscopy , fourier transform , resolution (logic) , infrared spectroscopy , analytical chemistry (journal) , composite material , mineralogy , optics , chemistry , geology , environmental chemistry , computer science , mathematics , organic chemistry , physics , artificial intelligence , telecommunications , mathematical analysis , quantum mechanics , geomorphology
Abstract FTIR micro spectroscopy coupled with mapping techniques is a powerful methodology to evaluate dimensionally dependent changes such as those encountered in PVC weathering processes. It is based on the complexity and specificity of the infrared spctrum and the dimensional resolution of the microscope. This paper will outline a systematic FTIR study of changes observed during outdoor photo degradation of PVC siding capstock formulations, as a function of exposure time and TiO 2 level. The results are compared with previously obtained accelerated QUV data. Profiles through the thickness dimension were analyzed to identify degradation species and depth distribution.