摘要
本文合成了N-对氯苯基甲基丙烯酰胺(N-p-ClPhMA),制备了N-p-ClPhMA与甲基丙烯酸甲酯(MMA),N-p-ClPhMA与丙烯酸甲酯(MA)两种共聚物。 用~1H-NMR方法测定了N-p-ClPhMA与MMA及N-p-ClPhMA与MA共聚合的竞聚率。 共聚体是一种无色透明的玻璃体。
N-p-ClPhMA was synthesized by the interaction of p-Chloroaniline with methacry-loyl chloride in the presence of triethylamine.The N-p-ClPhMA-co-MMA bulk copolymers were prepared.The compositions of the copolymers were determined from the peak areas of the-phenyl group and methoxy group proton in the proton NMR spectra.Reactivity ratios were calculated from the composition data by the Fineman-Ross method; the following values were obtained.r1 = 7.25±0.02(MMA), r2 = 0.10±0.02(N-p-ClPhMA) for MMA-co-N-p-ClPhMA; r1 = 1.33±0,02(MA), r2 = 0.40±0.02(N-p-ClPhMA) for MA-co-N-p-ClPhMA.The MMA-co-N-p-CIPhMA bulk copolymers are more heat-resistant than PMMA. homopolymer. When the amount of the N-p-ClPhMA changes from 2.0% to 4.0% the Tg of the bulk copolymers from 100.1℃ to 109.0℃, presumably due to the increase-of hydrogen bonds through the introduction of amide groups.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1990年第2期129-135,共7页
Acta Scientiarum Naturalium Universitatis Pekinensis
