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1B-O2-1740 PDF
高分子材料における高分解能GC-TOFMSを用いた微小差異解析および劣化生成物の組成解析による劣化機構解明へのアプローチ
Identification of unknown compounds in complex matrices is the most important and difficult part of any research. In polymer analysis, accurate characterization is important for when new materials are synthesized, when a competitive product is being evaluated, or when the performance of a product needs to be improved. Pyrolysis gas chromatography mass spectrometry has been applied successfully for polymer characterization. However, it's difficult to identify and monitor the products of pyrolysis, because pyrograms generally consists of complex pyrolyzates. Mass defect plots could be one of the solutions. Every compound characterized by its chemical formula with a unique mass defect resulting from the combination of its elements. This characteristic can be used to simplify the search for unique and novel compounds. In this study, we applied Pegasus GC- HRT (LECO, USA) combined with Kendrick Mass Defect (KMD) to clarify the degradation mechanism of Paraloid B-72/Copolymer of ethyl methacrylate and methyl acrylate.