Synthesis of networks in solution, 2. Influence of the primary molecular weight on the kinetics of crosslinking

摘要: The kinetics of the crosslinking reaction 4,4′-[methylenebis(1,4-phenylene)]-di-1,2,4-triazoline-3,5-dione with polybutadienes narrow molecular weight distribution was studied. At high conversions deviations from kinetic scheme a series first order reactions observed. were analyzed by introducing “retardation” function which includes all informations on changes in kinetics. retardation calculated experimental data and depends polymer concentration primary weight. onset behaviour is correlated to local segment assuming unperturbed dimensions coils semidilute state. Sterical hindrances formation transition state complex gel appear be main importance for observed results.