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Mass spectrometric characterization of telechelic prepolymers and addition polymers of DGEBA–aliphatic amines

✍ Scribed by Joachim E. Klee; Klaus Hägele; Michael Przybylski

Book ID
101268175
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
388 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis

Plasma desorption (PD) mass spectra of high molecular weight addition polymers of 2.2bis-[ 4-(2.3-epoxypropoxy)phenyl]propane (DGEBA) and benzylamine show protonated molecular ions of the intact polymers and oligomer molecules. In the spectrum of a DGEBAI N,N-dibenzyl-5-oxanonanediamine-1.9 addition polymer only fragments of the oligomers and a cyclic oligomer are observed. In both polymer spectra there is no indication for side reactions during the addition polymerization such as ether formation. Fast-atom bombardment (FAB) spectra of telechelic prepolymers having amino end groups show the regular oligomers with increasing degree of polymerization and the expected fragmentation products. Only prepolymers with epoxide end groups contain the regular prepolymers as well as side reaction products which are formed by reactions of the telechelics and DGEBA or by reaction of themselves. 0 1996 John Wiley & Sons, Inc.

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