The preparation of syndiotactic polymers through ring-opening polymerization of a chiral monomer bearing one asymmetric center in the ring was not found in literature.This paper presents the synthesis and properties of syndiotactic poly(phenyl glycidyl ether)(PPGE).Phenyl glycidyl ether was polymerized under the effect of Bu2SnO-Bu3PO4 condensates (Sn P).The tacticity of the obtained PPGE was dependent upon the structure of the catalyst.The Sn-P condensate obtained through a condensation reaction at 220~260℃ for 30~60 min
and then at 150~220℃ for 1h had two kinds of stereoselective center.Syndiotactic-rich PPGE fractions (s-PPGE) were separated from the polymerization products obtained using Sn- 8000
a condensate prepared by the two-step condensation
as catalyst.The yield of the s-PPGE fractions reduced as the polymerization temperature enhanced
indicating the activation energy for the syndiotactic center in the catalyst is lower than that for the isotactic center.Compared to the insoluble character of isotactic PPGE (i-PPGE) in any known solvents
s-PPGE can be dissolved in solvents such as chloroform and toluene.The crystallization ability of s-PPGE is lower than that of i-PPGE. The thermal induced crystallization of s-PPGE is very slow.However in the presence of an appropriate solvent such as acetone