N-对溴苯基甲基丙烯酰胺的合成及其与甲基丙烯酸甲酯共聚合的研究

<正> 我们曾报道过甲基丙烯酸甲酯(MMA)与N-PhMA共聚合研究,指出共聚体与PMMA相比具有较高的耐热性和更好的耐水性。本文探讨了在N-苯基取代甲基丙烯酰胺中当本基上引入取代基时对单体反应活性的影响。实验结果表明,苯基上引入溴对单体的反应活性与共聚体性能有明显影响。 仅器与药品 甲基丙烯酸、苯甲酰氯、氯化亚砜、苯胺、三氯甲烷等均是化学纯,对溴

COPOLYMERIZATION OF METHYL-METHACRYLATE (MMA) AND N-P-BROMOPHENYLMETHACRYLAMIDE (N-P-BrPhMA)

N-p-BrPhMA was synthesized by the interaction of p-bromoaniline with methacryloyl chloride in the presence of triethylamine. This new monomer was characterized by IR and 1H-NMR spectroscopy.The N-p-BrPhMA-co-MMA bulk copolymers were prepared and characterized by IR and 1H-NMR method.The compositions of the copolymers were determined from the areas of the phenyl group and methoxy group proton peaks in the proton NMR spectra.Reactivity ratios were calculated from the composition data by the Fineman-Ross method; the following values were obtained:r1= 3.25 + 0.02(MMA),r2 = 0.40 + 0.02(N-p-BrPhMA) for MMA-co-N-p-BrPhMA, r2= 1.05 + 0.02(MMA),r2 = 0.54 + 0.02(N-PhMA) for MMA-co-N-PhMA.The MMA-co-N-p-BrPhMA bulk copolymers are harder than PMMA homopolymer. When the amount of the N-p-BrPhMA changes from 2.63% to 28.7% the hardness of the bulk copolymers increases from 20.4 Kg/mm2 to 27.0 Kg/mm2.