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定量地研究了在C_r(Ⅲ)作用下,聚丙烯酰胺水溶液胶凝过程的动力学行为。实验发现,C_r(Ⅲ)使聚丙烯酰胺胶凝的过程可分为三个阶段:加速、稳态和终止。可用体系粘度的增加速率来表征凝胶网络的形成速率。已测得在稳态胶凝阶段用粘度表征的表现速率常数和表观活化能。
The kinetics of gelation of aqueous polyacrylamide solution under C_r (Ⅲ) was studied quantitatively. The experiment found that C_r (Ⅲ) polyacrylamide gelation process can be divided into three stages: acceleration, steady-state and termination. The rate of increase in viscosity of the system can be used to characterize the rate of gel network formation. Viscosity-moderated rate constants and apparent activation energies have been measured during steady-state gelling.