Abstract
AbstractMultiple internal reflection infrared spectroscopy (MIR) was used to study surface degradation in commercial and laboratory prepared plasticized PVC samples. Samples were subjected to accelerated (UV exposure) and natural weathering. Ultraviolet‐exposed samples show peak formation at 3200 cm−1 (OH), and 1400cm−1(CH bend), as well as increased absorption at 1720 cm−1 (CO). Outdoor‐exposed samples show essentially similar changes, but the variation in peak ratio shows large variations of a random nature; it has been proposed that rainfall has a major influence on surface plasticizer concentration.
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