A rapid pyrolysis mass spectrometry technique for the study of polymers

1998-01-01
Pyrolysis techniques coupled to mass spectrometers are used to investigate thermal stability, thermal degradation mechanisms and decomposition products of synthetic polymers. Each pyrolysis technique has its own advantages and limitations. The main objective of this study was to investigate the applicability of a rapid pyrolysis mass spectrometry technique for thermal analysis of polymers. For this purpose, thermal degradation of polymers, namely polystyrene, polybutadiene, styrene butadiene rubber, and styrene-butadiene-styrene block copolymer have been studied using a rapid pyrolysis mass spectrometry technique and results were compared with our previous data obtained using direct and indirect pyrolysis mass spectrometry techniques. Results indicate that not only the pyrolysis technique applied, but also the heating rate, affects thermal degradation as expected. It was also shown that the present rapid pyrolysis mass spectrometry system is a fast and powerful technique in investigating the thermal behavior of homopolymers, and of random and block copolymers.
Rapid Communications in Mass Spectrometry

Suggestions

A pyrolysis mass spectrometry study of polythiophene - Natural rubber and polythiophene - Synthetic rubber conducting polymer composites
Yigit, S.; Hacaloğlu, Jale; Akbulut, Ural; Toppare, Levent Kamil (1997-01-01)
The thermal behaviors and degradation products of conducting polymer composites prepared by electrooxidation of thiophene using natural rubber or synthetic rubber as the insulating matrix were studied by direct and indirect mass spectrometry techniques. The pyrolysis mass data revealed that a chemical interaction formed between the components of the composites during polymerization. Thermal characteristics of rubbers totally disappeared in the composites indicating presence of some chain scissions leading t...
A pyrolysis mass spectrometry study of polythiophene-polyamide composites
Vatansever, F.; Akbulut, Ural; Toppare, Levent Kamil; Hacaloğlu, Jale (1996-01-01)
The thermal behavior of composites of polythiophene and polyamide prepared by mechanical blending and electrochemical synthesis of polythiophene onto an electrode coated with polyamide have been studied thoroughly by the pyrolysis approach under both direct and indirect pyrolysis mass spectrometric analysis conditions. It is determined that the electrolytic film has different properties from the mechanical mixture and the related homopolymers.
The use of pyrolysis mass spectrometry to investigate polymerization and degradation processes of methyl amine-based benzoxazine
Bagherifam, Shahla; Uyar, Tamer; Ishida, Hatsuo; Hacaloğlu, Jale (2010-06-01)
In this study, direct pyrolysis mass spectrometry, DP-MS, was applied to investigate curing and polymerization mechanisms of phenol and methyl amine-based benzoxazine monomer, and thermal decomposition and crosslinking characteristics of the corresponding polybenzoxazine. The results indicated opposing polymerization reaction routes besides the generally accepted one. The cleavage of C-O bonds of the oxazine rings either followed by transformation into a polymer constituting ortho or para substituted phenol...
The synthesis and characterization of aluminum loaded SBA-type materials as catalyst for polypropylene degradation reaction
Obali, Zeynep; Sezgi, Naime Aslı; Doğu, Timur (2011-12-01)
The performance of pure and aluminum containing SBA-type catalysts prepared using different aluminum sources and different Al/Si ratios were investigated in the polypropylene degradation reaction using a thermogravimetric analyzer. For the synthesis of catalysts, aluminum isopropoxide and aluminum sulphate were used as the aluminum sources. Synthesized materials had high surface areas and exhibited nitrogen adsorption isotherms of type IV. EDS results showed that the aluminum incorporation into the structur...
A nonintrusive diagnostics technique for flame soot based on near-infrared emission spectrometry
Ayrancı Kılınç, Işıl; Selçuk, Nevin; Department of Chemical Engineering (2007)
A novel nonintrusive soot diagnostics methodology was developed, validated and applied for in-situ determination of temperature, volume fraction and refractive index of soot aggregates formed inside flames by using near-infrared emission spectrometry. Research was conducted in three main parts, first one addressing development and validation of a comprehensive "direct" model for simulation of line-of-sight radiative emission from axisymmetric sooty flames by coupling sub-models for radiative transfer, radia...
Citation Formats
J. Hacaloğlu, “A rapid pyrolysis mass spectrometry technique for the study of polymers,” Rapid Communications in Mass Spectrometry, pp. 1793–1795, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32431.