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Pyrolysis mechanism of Kapton-type polyimide was investigated with special attention to the early stage. Two approaches were employed to reveal the pyrolysis reactions: one is an analysis of evolved compounds, the other is a hydrolysis method that selectively converts polyimide char into low-molecular-weight compounds. In the initial step of pyrolysis, bond cleavage around imide ring and following...
The mass and microwave spectra of the pyrolysates of three oxime compounds (XCH 2 CH=NOH, X = H, CH 3 and Cl) were observed at 900, 800, and 550°C, respectively. The pyrolysates of CH 3 CH=NOH and CH 3 CH 2 CH=NOH were identified by microwave and mass spectroscopy to be acetonitrile and propionitrile. The pyrolysates of ClCH 2 CH=NOH were identified...
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