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研究了笼形聚肟偕亚氨二乙酸钒(CPV)-硫脲(TU)体系在硝酸溶液中引发丙烯腈(AN)聚合反应.表观聚合速度(R_P)是 R_P=1.0×10~8e~(-10.500/RT)[AN]~(1.0)[CPV]~(1.0)[TU]~(1.5)[HNO_3]~(3.0) 聚合诱导期(τ)随反应温度和物料浓度发生变化,可表示为 1/τ=5.2×10~9e~(-12.800/RT)[AN]~1.0[CPV]~1.0[TU]~1.5[HNO_3]~3.0实验结果表明,聚合反应以单基终止为特征,可能是和高分子载体较大的空间位阻有关.
The polymerization of acrylonitrile (AN) was induced in the solution of nitric acid by the caged polyvmethylammonium vanadate (CPV) -thiourea (TU) system.The apparent polymerization rate (R_P) was Rp = 1.0 × 10-8e ~ (-10.500 / RT) [C] ~ (1.0) [CPV] ~ (1.0) [TU] ~ (1.5) [HNO3] ~ (3.0) The polymerization induction period (τ) changed with the reaction temperature and the material concentration. Can be expressed as 1 / τ = 5.2 × 10 ~ 9e ~ (-12.800 / RT) [AN] ~ 1.0 [CPV] ~ 1.0 [TU] ~ 1.5 [HNO 3] ~ 3.0 The experimental results show that the polymerization reaction terminated with The features may be related to the larger steric hindrance of polymer carriers.