کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5202727 | 1381908 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal degradation mechanism of poly(butylene carbonate)
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermal degradation mechanism of poly(butylene carbonate) (PBC) was elucidated by means of thermogravimetric analysis (TGA), 1H nuclear magnetic resonance (1H NMR) and pyrolysis-gas chromatography mass spectrometry (Py-GC/MS). The results indicated that there are three main pathways for the thermal degradation of PBC, including unzipping, β-H transfer and decarboxylation reactions. The unzipping reaction can be facilely induced at low temperature of 200 °C, and all of the three reactions occur at high temperature above 300 °C. TGA results suggested the thermal stability order: hydroxyl-terminated PBC < acetyl-terminated PBC < methyl carbonate terminated PBC. The hydroxyl end group can induce the unzipping reaction, while methyl carbonate chain-end depresses the occurrence of it.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 97, Issue 9, September 2012, Pages 1589-1595
Journal: Polymer Degradation and Stability - Volume 97, Issue 9, September 2012, Pages 1589-1595
نویسندگان
Wenxiang Zhu, Chuncheng Li, Dong Zhang, Guohu Guan, Yaonan Xiao, Liuchun Zheng,