Pyrolysis of Polymers-Mass Chromatography-Vapor Phase Infrared Spectrophotometry
نویسندگان
چکیده
منابع مشابه
Quantitative vapor-phase infrared spectrometry of ammonia.
Reference spectra of ammonia from four sources are compared. Low-resolution spectra (i.e., spectra for which the spectrometer resolution is numerically greater than the full-width at half-height of the rotational lines) were obtained from the Environmental Protection Agency (EPA) web site and from Infrared Analysis, Inc. High-resolution (0.12 cm-1) spectra were obtained from the National Instit...
متن کاملInvestigation of Pitch Stabilisation Using Pyrolysis-gas Chromatography-mass Spectrometry
Oxidative stabilisation of mesophase pitch is well known to severely limit the dimensions of artifacts formed from it or, for slightly larger artifacts, to be time-consuming and costly (Gallego, Edie, Nysten, Issi, Treleaven, and Deshpande, 2000). Control and understanding of this step is of very great interest in the production of highly oriented graphitisable material as it could lead to a dr...
متن کاملPyrolysis-gas chromatography-isotope ratio mass spectrometry of polyethylene.
Polyethylene is probably the most used plastic material in daily life and its accurate analysis is of importance. In this communication the chemical structure of polyethylenes is studied in detail using conventional analytical pyrolysis (Py-GC/MS), bulk stable isotopic analysis (IRMS) and pyrolysis compound specific stable isotopic analysis (Py-CSIA) to measure stable isotope proportions (δ(13)...
متن کاملPyrolysis-Gas Chromatography/Mass Spectrometry of Polymeric Materials
Structural analysis and the study of degradation properties are important in order to understand and improve performance characteristics of synthetic polymers and copolymers in many industrial applications. Polymers/copolymers cannot be analyzed in their normal state by traditional gas chromatography (GC) because of high molecular weight and lack of volatility. However, by heating these macromo...
متن کاملRecycling of polymers by pyrolysis
The pyrolysis of plastic waste, scrap tires and other polymeric materials in a fluidized bed has been carried out based on a scale up program (laboratory plants 70 g/h, 500 g/h, 3000 g/h, and pilot plant 20-50 kg/h). The fluidized bed shows short residence times and high heat and mass transfers, and is heated indirectly up to 600 800 OC. In the case of poly(methylmethacry1ate) (PMMA) or polysty...
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ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 1977
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.33.8_p254