Hexatriacontane (C 36 ) was exposed to vacuum ultraviolet radiation. The formation of double bonds was investigated by derivatization, i.e. these olefinic structures were transformed by epoxidation in order to determine their number in the molecule. The extent of the reaction was determined by means
Preliminary derivatization during investigation of polymers with labile bonds via matrix-assisted laser desorption/ionization mass spectrometry
β Scribed by R. S. Borisov, N. Yu. Polovkov, V. G. Zaikin
- Book ID
- 118157561
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2012
- Tongue
- English
- Weight
- 186 KB
- Volume
- 54
- Category
- Article
- ISSN
- 1560-0904
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The hydroxy end-groups of poly(ethyleneglyco1) polymers PEG lo00 and 4000) were derivatized by etherification using methyl, ethyl and triphenylmethyl (trityl) halogenides. During the derivatization the molecular mass distribution of monoand disubstituted polymers as well as unsubstituted polymers co
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) is shown to give inaccurate results for the analysis of low molecular weight ethoxylate polymers. It is demonstrated that when the degree of ethoxylation is low (n < 9), MALDI-TOFMS produces substantially high
Sample preparation, namely finding a suitable matrix-analyte combination, has been one of the most important concerns in using matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) for synthetic polymers. Herein we report the novel use of surfactants in the polymer sample preparat