甲基丙烯酸异冰片酯与N-对溴苯基甲基丙烯酰胺共聚合研究

Copolymerization of Isobornyl-methacrylate (IBMA) and N-p-Bro-mophenylmethacrylamide (N-p-BrPhMA)

本文报导甲基丙烯酸异冰片酯(IBMA)与N-对溴苯基甲基丙烯酰胺(N-p-BrPhMA)的共聚物(用IBMA-co-N-p-BrPhMA表示)的制备。并给出了共聚物的红外光谱和核磁共振氢谱。 用~1H-NMR方法测定了共聚物的组成。参考Fineman-Ross方程计算了共聚体系中单体的竞聚率分别是r_1=0.72±0.02(N-p-BrPhMA);r_2=0.30±0.02(IBMA)。 比较了IBMA与MMA、MA对N-p-BrPhMA的反应活性,其顺序是: MMA(1/r=2.50)>MA(1/r=1.59)>IBMA(1/r=1.39) 共聚体是硬的无色透明的玻璃体。

The N-p-BrPhMA-co-IBMA bulk copolymers have been prepared and characterized by IR and 1H-NMR methods.The composition of the copolymers were determined from the areas of the phenyl group and methine proton peaks in the 1H-NMR spectra.Reactivity ratios were calculated from the composition data by the Fineman-Ross method; the following values were obtained:r2 = 0.30±0.02. (for IBMA)r1 = 0.72±0.02 (for N-p-BrPhMA)The activity of various acrylates with N-p-BrPhMA was discussed.The IBMA-co-N-p-BrPhMA bulk copolymers are transparent.