Abstract:

Crosslinked β-cyclodextrin（β-CyD）polymers with diisocyanate was prepared under ultrasonic irradiation. The key parameters and optimum synthesis conditions were optimized by orthogonal experiment and evaluated with yield ratio. The ratio of β-CyD∶diisocyanate was 1∶9（mol/mol），hexamethylene diisocyanate（HDI）was chosen as crosslinking agent，the ratio of dibutyltin dilaurate∶triethylene diamine was 1∶1.5（wt/wt），reaction temperature was 60 ℃，reaction time was 7 h. FTIR，SEM and TGA were used for the characterization of crosslinked polymers. The results suggested that β-CyD polymers retained cavity structure，crosslinked interactions of β-CyD and diisocyanate formed carbamate groups and the network surface features. Reaction temperature was lowered and reaction time was shortened under ultrasonic irradiation. The crosslinked polymers had micro-sphere surface topography and multi-hole cavity structure.