Thermal analysis of polyethylene glycol: Evolved gas analysis with ion attachment mass spectrometry

被引:22
作者
Kitahara, Yuki [1 ]
Takahashi, Seiji [1 ]
Fujii, Toshihiro [1 ]
机构
[1] Meisei Univ, Dept Chem, Fac Sci & Engn, Tokyo 1918506, Japan
关键词
Evolved gas analysis; Polyethylene glycol; Pyrolysis; Ion attachment mass spectrometry; Peroxides; HYDROGEN-PEROXIDE; FLASH PYROLYSIS; DEGRADATION PRODUCTS; KINETICS; OXIDE; MS;
D O I
10.1016/j.chemosphere.2012.03.054
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The thermal decomposition of polyethylene glycol was investigated by using a technique combining evolved gas analysis (time-resolved pyrolysis) with ion-attachment mass spectrometry. This technique allows the detection of intact pyrolysis products and, therefore, offers the opportunity for direct real-time monitoring of thermal by-products. Unstable products can thus be detected: for instance, many highly reactive organic peroxides, such as CH3OOH and HOCH2OOH, were found in this study. Classification analysis revealed 10 major compositional formulas among the product species: CnH2n+2O, CnH2n+2O2, CnH2n+2O3, CnH2n+2O4, CnE2n+2O5, CnH2n+2O6, CnH2n+2O7, CnH2nO, CnH2nO2 and HO(CH2CH2O)(n)H ethylene glycol oligomers. The Li+ ion adduct mass spectra showed a characteristic profile in terms of both the appearance of unique components and the distribution of pyrolysis products. Among the products of the thermal decomposition of PEG, formaldehyde (HCHO) and organic peroxides were particularly interesting. Formaldehyde, one of the 10 most abundant products, is a known human carcinogen. The detection of peroxides suggests that they may form during the incineration of PEG, which may have important environmental implications. The existence of peroxide products. may have implications for chemical evolution in incinerator systems. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:663 / 669
页数:7
相关论文
共 28 条
[1]   Flash pyrolysis of polyethyleneglycol .2. Kinetics determined by T-jump/FTIR spectroscopy [J].
Arisawa, H ;
Brill, TB .
COMBUSTION AND FLAME, 1997, 109 (1-2) :105-112
[2]   Vacuum Thermal Degradation of Poly(ethylene oxide) [J].
Choukourov, Andrei ;
Grinevich, Andrey ;
Polonskyi, Oleksandr ;
Hanus, Jan ;
Kousal, Jaroslav ;
Slavinska, Danka ;
Biederman, Hynek .
JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (10) :2984-2989
[3]   CHARACTERIZATION OF DEGRADATION PRODUCTS OF POLYETHYLENE OXIDE BY PYROLYSIS MASS-SPECTROMETRY [J].
FARES, MM ;
HACALOGLU, J ;
SUZER, S .
EUROPEAN POLYMER JOURNAL, 1994, 30 (07) :845-850
[4]  
Fiorini KJS, 2006, AM LAB, V38, P27
[5]   Contrasting atmospheric boundary layer chemistry of methylhydroperoxide (CH3OOH) and hydrogen peroxide (H2O2) above polar snow [J].
Frey, M. M. ;
Hutterli, M. A. ;
Chen, G. ;
Sjostedt, S. J. ;
Burkhart, J. F. ;
Friel, D. K. ;
Bales, R. C. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2009, 9 (10) :3261-3276
[6]  
Fujii T, 2000, MASS SPECTROM REV, V19, P111, DOI 10.1002/1098-2787(200005/06)19:3<111::AID-MAS1>3.0.CO
[7]  
2-K
[8]  
Fujii T., 2007, ENCY MASS SPECTROMET, V6, P327
[9]   Thermal/oxidative degradation and stabilization of polyethylene glycol [J].
Han, S ;
Kim, C ;
Kwon, D .
POLYMER, 1997, 38 (02) :317-323
[10]   Atmospheric hydrogen peroxide and organic hydroperoxides during PRIDE-PRD'06, China: their concentration, formation mechanism and contribution to secondary aerosols [J].
Hua, W. ;
Chen, Z. M. ;
Jie, C. Y. ;
Kondo, Y. ;
Hofzumahaus, A. ;
Takegawa, N. ;
Chang, C. C. ;
Lu, K. D. ;
Miyazaki, Y. ;
Kita, K. ;
Wang, H. L. ;
Zhang, Y. H. ;
Hu, M. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2008, 8 (22) :6755-6773