Mechanism of radiation-chemical and pyrolytic transformations in lexan
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2006
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| _version_ | 1876444613229674496 |
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| author | Roustam Aliev |
| author_facet | Roustam Aliev |
| contents | Mechanism of radiation-chemical and pyrolytic transformations in lexan Roustam Aliev Rafael Navarro-González Biología GC MS FTIR Lexan radiolysis We report here a new approach to study the mechanism of radiation-chemical transformations in polymericmaterials based on the combined analysis of radiolytic gases, and pyrolytic products from preirradiated polymersby flash pyrolysis coupled to gas chromatography Fourier transformed infrared spectroscopy mass spectrometrywith electron impact mode (GC-FTIR-MS). Lexan® (bisphenol-A polycarbonate) was studied in the dose rangefrom 0.125 to 1.0 MGy. Lexan irradiation was accompanied by the preferential release of carbon monoxidefollowed by minor production of hydrogen, carbon dioxide and methane. Pyrolyzed Lexan releases mainlycarbon dioxide, methane, benzene, toluene, phenol and 4-methyl-phenol. On the basis of these results wesuggest two main pathways of Lexan radiation-induced scission with equal probabilities: (a) carbonate bond and(b) aliphatic-aromatic bond ruptures. 2006 artículo científico 1405-888X https://www.redalyc.org/articulo.oa?id=43290101 en http://www.redalyc.org/revista.oa?id=432 Tip Revista Especializada en Ciencias Químico-Biológicas application/pdf Universidad Nacional Autónoma de México Tip Revista Especializada en Ciencias Químico-Biológicas (México) Num.1 Vol.9 |
| format | Artículo científico |
| id | redalyc_43290101 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Mechanism of radiation-chemical and pyrolytic transformations in lexan Roustam Aliev Biología GC MS FTIR Lexan radiolysis Mechanism of radiation-chemical and pyrolytic transformations in lexan Roustam Aliev Rafael Navarro-González Biología GC MS FTIR Lexan radiolysis We report here a new approach to study the mechanism of radiation-chemical transformations in polymericmaterials based on the combined analysis of radiolytic gases, and pyrolytic products from preirradiated polymersby flash pyrolysis coupled to gas chromatography Fourier transformed infrared spectroscopy mass spectrometrywith electron impact mode (GC-FTIR-MS). Lexan® (bisphenol-A polycarbonate) was studied in the dose rangefrom 0.125 to 1.0 MGy. Lexan irradiation was accompanied by the preferential release of carbon monoxidefollowed by minor production of hydrogen, carbon dioxide and methane. Pyrolyzed Lexan releases mainlycarbon dioxide, methane, benzene, toluene, phenol and 4-methyl-phenol. On the basis of these results wesuggest two main pathways of Lexan radiation-induced scission with equal probabilities: (a) carbonate bond and(b) aliphatic-aromatic bond ruptures. 2006 artículo científico 1405-888X https://www.redalyc.org/articulo.oa?id=43290101 en http://www.redalyc.org/revista.oa?id=432 Tip Revista Especializada en Ciencias Químico-Biológicas application/pdf Universidad Nacional Autónoma de México Tip Revista Especializada en Ciencias Químico-Biológicas (México) Num.1 Vol.9 |
| title | Mechanism of radiation-chemical and pyrolytic transformations in lexan |
| topic | Biología GC MS FTIR Lexan radiolysis |
| url | https://www.redalyc.org/articulo.oa?id=43290101 |