COMBINED IR AND MASS-SPECTROMETRIC ANALYSIS OF EVOLVED GASES DURING PYROLYSIS OF POLYMERS

Date

1993-01-01

Author

YALCIN, T
Akbulut, Ural
SUZER, S

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

77
views

0
downloads

Gas Phase IR and Mass Spectroscopic techniques are combined for the analysis of gaseous pyrolysis products of polybutadiene sulfone prepared by Co-60 gamma radiation. It is shown that the combination of the two techniques, for evolved gas analysis, leads to a more definitive product identification.

Subject Keywords

Transform infrared-spectroscopy, Simultaneous thermal-analysis, Automated-system, Polymerization

URI

https://hdl.handle.net/11511/55638

Journal

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Characterization of degradation products of polyethylene oxide by pyrolysis mass spectrometry Fares, M.M.; Hacaloğlu, Jale; Suzer, S. (1994-01-01) The techniques of direct and indirect (evolved gas analysis) pyrolysis MS are used to characterize the thermal degradation products of polyethylene oxide. Using direct pyrolysis MS technique the main degradation process is determined to be due to C~ and C~C scissions yielding fragments characteristic of the polymer. Evolved gas analysis indicates formation of small molecular stable compounds such as C2H•OCzH 5, CH3CHO, CO,, CO and C2H 4.
A Monte Carlo method to solve for radiative effective thermal conductivity for particle beds of various solid fractions and emissivities Johnson, Evan; Tarı, İlker; Baker, Derek Keıth (Elsevier BV, 2020-07-01) A method is described to find the effective thermal conductivity due to radiation (k(rad)) for groups of particles at packed and less than packed states. Unlike most previous studies, the method does not rely on the assumption of a unit cell or absorption and scattering coefficients to derive k(rad). In this method, radiation is modeled with a 3D Monte Carlo ray tracing code, steady state particle temperatures are found with a particle-particle heat exchange simulation, and k(rad) is found with a comparison...
Non-isothermal DSC and TG/DTG analysis of the combustion of silopi asphaltites Kök, Mustafa Verşan (2007-06-01) In this research, non-isothermal combustion and kinetics of Silopi (Turkey) asphaltite samples were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG/DTG). A sample size of 10 mg, heating rates of 5, 10, 15 and 200C min(-1) were used in the temperature range of 20-600 degrees C, under air atmosphere. Two reaction regions were observed in DSC curves. The first region is due to the evaporation of moisture in asphaltite sample whereas, release of volatile matter and burning of ca...
Analysis of polymers using evolved-gas and direct-pyrolysis techniques Fares, Mohammed M.; Yalcin, Talat; Hacaloğlu, Jale; Gungor, Atilla; Suzer, Sefik (1994-12-01) Thermal analysis of polystyrene, poly(p-methylstyrene) and poly(a-methylstyrene) has been carried out using evolved-gas analysis by infrared and mass spectrometry, and directpyrolysis analysis by mass spectrometric techniques. Evolved-gas analysis, both by infrared and mass spectrometry, reveals features due mainly to the corresponding monomers or stable, volatile, and low relative molecular mass degradation products. In direct-pyrolysis mass spectrometry, however, primary decomposition products and heavier...
Simultaneous determination of Cd and Zn by fluorescence spectrometry using a novel reagent and surfactants Ertas, N; Akkaya, EU; Ataman, Osman Yavuz (1997-01-01) A method for the simultaneous determination of zinc and cadmium with the chelating ligand 9-(1',4',7',10'-Tetraazacyclododecyl)methylanthracene using spectrofluorimetry is described. Effect of experimental variables on fluorescence intensities and on the spectral behavior of the metal-ligand in several types of surfactants have been studied, The range of application is between 2.0 and 35 mu g/L for both zinc and cadmium. The method has been applied to the determination of zinc and cadmium in real leachate s...

Citation Formats

T. YALCIN, U. Akbulut, and S. SUZER, “COMBINED IR AND MASS-SPECTROMETRIC ANALYSIS OF EVOLVED GASES DURING PYROLYSIS OF POLYMERS,” JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, pp. 55–59, 1993, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55638.