A rapid pyrolysis mass spectrometry technique for the study of polymers

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


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 effect of triethanolamine on thermal decomposition of GAP
Fazhoğlu, Hatice; Hacaloğlu, Jale (2002-01-01)
The effect of triethanolamine (TEA) on thermal behavior of glycidyl azide polymer (GAP) has been investigated by direct pyrolysis mass spectrometry technique. It has been observed that thermal degradation of GAP-TEA mixture also begins with the cleavage of the side groups as in the case of GAP. Again, the main decomposition started with the elimination of molecular nitrogen from the azide functional group, and a quite similar degradation mechanism has been proposed. The increase in the thermal stability of ...
Effect of ionic strength on the performance of polymer enhanced ultrafiltration in heavy metal removal from aqueous solutions
İslamoğlu, Sezin; Yılmaz, Levent; Department of Chemical Engineering (2006)
Effect of ionic strength on the efficiency of heavy metal removal and recovery from aqueous solutions via continuous mode polymer enhanced ultrafiltration (PEUF) method was examined. Application of PEUF to divalent ions of cadmium, nickel and zinc after their prior linking with polyethylenimine (PEI) results in complete removal of metal ions from single component aqueous solutions at high pHs. Binding ability and hence the extent of metal retention in high ionic strength medium exhibits differences between ...
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.