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- W2115449529 abstract "The degradation and prestabilization of polyacrylonitrile (PAN) were investigated with differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The initial temperature, initial loss-weight temperatures, and loss-weight were significantly lowered when ammonium itaconate (AIA) was used as comonomer. One exothermal peak of PAN (homopolymer) was shown in the DSC curves, while there were four exothermal peaks of poly(AN-AIA). FTIR spectra results confirm the degradation process of NH groups. During the heating process, NH groups (3030 cm−1) were changed into NH (2955 cm−1) and then NH groups (2920 cm−1). The dissociated H+ could initiate the cyclization reactions of CN companied with heat released. The effect of ammonia on degradation and prestabilization of PAN was also studied. It was found that ammonia could accelerate prestabilization of acrylic precursors. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010" @default.
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- W2115449529 date "2010-01-01" @default.
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- W2115449529 title "The degradation and prestabilization of acrylonitrile copolymers" @default.
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- W2115449529 doi "https://doi.org/10.1002/app.32032" @default.
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