کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5205174 | 1381992 | 2006 | 6 صفحه PDF | دانلود رایگان |
IR laser-induced degradation of poly(ethylene terephthalate) (PET) was studied under different irradiation conditions and the ablated volatile and solid products were characterized by mass and infrared spectroscopy, gel-permeation chromatography, thermogravimetry and electron microscopy. The observed volatile products (carbon oxides, H2, C1-2 hydrocarbons, acetaldehyde, benzene and toluene) and less-volatile aromatic compounds are typical products of thermal degradation of PET. The ablatively deposited solid materials are a blend of soluble, structurally similar oligomers and of an insoluble polymer containing carbonyl groups bonded in a -C(O)OH arrangement. Thermal degradation of these deposited solids is controlled by decomposition of sublimed fractions and is easier than that of PET.
Journal: Polymer Degradation and Stability - Volume 91, Issue 10, October 2006, Pages 2318-2323