| 초록 |
The isothermal curing kinetics of endo-dicyclopentadiene (endo-DCPD) incorporated with the 1st and 2nd generation Grubbs' catalysts as initiator for ring-opening metathesis polymerization (ROMP) were studied using model-free isoconversional and model-fitting approaches by means of differential scanning calorimetry (DSC). The analysis results show that the 2nd generation catalyst is more effective in ROMP than the 1st generation catalyst, as evident from the curing rate and fractional conversion (α). The curing process occurred via different ROMP reaction mechanisms, i.e., decelerating for the 1st and autocatalytic for the 2nd generation catalyst system. Poly(dicyclopentadiene) (poly-DCPD) cured with the 1st and 2nd generation catalysts was also characterized by swelling, tensile, dynamic mechanical and thermogravimetric analysis measurements in this work. |
