Abstract: Based upon Jacoson-Stockmayer theory, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) was used to analyze the component distribution of a series of cyclic aryl oligomers. The relationship between the component distribution of cyclic aryl oligomers and the monomer structure was investigated. The results indicated the distribution of cyclic aryl oligomers could be accorded with J-Stheory well. The effect of the bond angle of bisphenol monomer on the distribution of cyclic ester and phosphonate oligomers showed that the value of γ in J-Stheory decreased with the bond angle increasing from 100° to 120°. On the premise of a constant monomer, the distribution rule of cyclic aryl ether oligomers affected by the structure of another monomer was consistent with cyclic ester and phosphonate oligomers.

Key words: Component distribution of cyclic aryl oligomers, Structure of monomer, MALDI-TOF MS