【摘要】 <正> 对于共聚合反应中同一对单体的竞聚率,由于采用的实验方法、计算方法不同,可能有几对、甚至上百对不同的数据。在实际生产中已逐渐趋向于在较高温度下进行共聚合,而文献的竞聚率一般均在较低温度下获得,因此缺乏实用意义。本文用FTIR方法测定苯乙烯（St）-甲基丙烯酸正丁酯（BMA）共聚竞聚率参数r₁和r₂,讨论了温度的影响。更多还原

【Abstract】 For the system of styrene/n-butyl methacrylate/AIBN, copolymerizations were carried out at 40℃, 60℃ , 80℃ , 100℃ , 120℃ , 140℃ respectively. The compositions of copoly-mers were analyzed by FTIR. The relative reactivity ratios of St and BMA are calculated by the error-in variables method, and 95% joint confidence intervals of the reactivity ratios are also given. The relative reactivity ratios of St-BMA system at different temperatures were obtained from the linear relation of relative reactivity rarios and temperatures by regression treatment.更多还原