In-situ hydrolysis/methylation pyrolysis CGC for the characterization of polyaramides
作者： Arnold Venema , Renie C. A. Boom-Van Geest
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摘要: Some parameters influencing the in-situ methylation by tetramethylammonium hydroxide (TMAH) during pyrolysis have been investigated with model compounds and polyaramides. Both temperature excess TMAH (pH effect) influence of carboxy-, aromatic amino-, hydroxyl-functional groups. While solvent TMAH, i.e., methanol or water hardly influenced compounds, effect was significant for This can be explained assuming a transesterification mechanism rather than hydrolysis/methylation. N-methylation prior to decomposition polyaramides also may not excluded. © 1995 John Wiley & Sons, Inc.
sci-hub.se 参考文章(17)
O. Mleinek, Ľ. Cvečková, The gas chromatographic analysis of some polycondensation polymers Journal of Chromatography A. ,vol. 94, pp. 135- 142 ,(1974) , 10.1016/S0021-9673(01)92362-3
L. D. Metcalffe, C. N. Wang, Rapid Preparation of Fatty Acid Methyl Esters Using Organic Base-Catalyzed Transesterification Journal of Chromatographic Science. ,vol. 19, pp. 530- 535 ,(1981) , 10.1093/CHROMSCI/19.10.530
E. W. Robb, J. J. Westbrook, Preparation of Methyl Esters for Gas Liquid Chromatography of Acids by Pyrolysis of Tetramethylammonium salts. Analytical Chemistry. ,vol. 35, pp. 1644- 1647 ,(1963) , 10.1021/AC60204A029
J.M. Challinor, A pyrolysis-derivatisation-gas chromatography technique for the structural elucidation of some synthetic polymers Journal of Analytical and Applied Pyrolysis. ,vol. 16, pp. 323- 333 ,(1989) , 10.1016/0165-2370(89)80015-4
A. Venema, J. Veurink, A new method for solvent-free application of polymers and inorganic materials to ferromagnetic wires used for pyrolysis-capillary gas chromatographic studies Journal of Analytical and Applied Pyrolysis. ,vol. 7, pp. 207- 213 ,(1985) , 10.1016/0165-2370(85)80110-8
Donald T. Downing, Analysis of aqueous solutions of organic acids by pyrolysis of their tetramethylammonium salts in the gas chromatograph Analytical Chemistry. ,vol. 39, pp. 218- 221 ,(1967) , 10.1021/AC60246A026
T. H. Mourey, R. A. Guistina, T. G. Bryan, R. F. Thornbury, R. Blevins, R. J. Perry, S. R. Turner, N‐methylation of wholly aromatic polyamides for size‐exclusion chromatography Journal of Applied Polymer Science. ,vol. 45, pp. 1983- 1994 ,(1992) , 10.1002/APP.1992.070451113
J.M. Challinor, Characterisation of rosin-based commercial resins by pyrolysis— and simultaneous pyrolysis methylation—gas chromatography/mass spectrometry techniques Journal of Analytical and Applied Pyrolysis. ,vol. 25, pp. 349- 360 ,(1993) , 10.1016/0165-2370(93)80054-4
R. Misir, B. Laarveld, R. Blair, Evaluation of a rapid method for preparation of fatty acid methyl esters for analysis by gas-liquid chromatography. Journal of Chromatography A. ,vol. 331, pp. 141- 148 ,(1985) , 10.1016/0021-9673(85)80015-7
J.B.F. Lloyd, B.R.G. Roberts, Gas chromatographic characterization of cooking fats with reference to a case of murder. Journal of Chromatography A. ,vol. 77, pp. 228- 232 ,(1973) , 10.1016/S0021-9673(00)93952-9