Flexible cyanated phenylene sebacate oligomer (CPS) was prepared to characterize its cure kinetics and the gel point. A dynamic differential scanning calorimetry study revealed an apparent activation energy of 21.8kcalmoi-~ and first-order kinetics with rate expression Af(~)=7.8 x 106(I-or)s-1. Gravimetric analysis revealed a gel point at ~eJ = 51%, close to the theoretical value of 50%. The accessibility of cyanate groups during cure of CPS resulted in a lower gel point as compared with that of a rigid aromatic dicyanate such as 2,2-bis(4-cyanatophenyl)propane
Посилання на статтю:
Cure kinetics and gravimetric analysis of a flexible aromatic dicyanate, cyanated phenylene sebacate oligomer / Ming-Cherng Lu and Jin-Long Hong* // Polymer. – 1994. – Vol 35. – P. 2822-2827.