Mass spectrometric characterization of a 2,2-bis[4-(2,3-epoxypropoxy)phenyl]propane-aniline addition polymer and its telechelic prepolymers

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

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 369 KB
• Volume: 196
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1995.021960321

✦ Synopsis

Abstract

Fast‐atom bombardment (FAB) and plasma desorption mass spectrometry of high molecular weight addition polymers of 2,2‐bis[4‐(2,3‐epoxypropoxy)phenyl]propane (DGEBA) and aniline show protonated molecular ions of the intact polymer and oligomer molecules. The oligomeric products consist mainly of cyclooligomers. Their formation can be observed during the polymerization reaction. Telechelic prepolymers having epoxide end groups as well as telechelics containing amino end groups were found with lower degree of polymerization in the mass spectra. Side reactions such as ether formation or epoxide polymerization were not observed. Telechelic DGEBA‐aniline prepolymers are shown to consist of a series of oligomers as shown by highpressure liquid chromatography (HPLC) analyses. Consequently, the FAB mass spectra of the prepolymers show molecular ions of the different oligomers. Furthermore, under the conditions of the FAB mass spectrometric analysis fragmentation of the prepolymers to iminium fragment ions was observed.