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以自由基本体聚合方法制备了甲基丙烯酸丁酯/丙烯酰胺(BMA/AM)共聚物.将极性分子环己醇引入到BMA和AM的共聚体系中,研究了环己醇对单体转化率和BMA/AM共聚物特性黏度的影响.随着环己醇加入量的增加,AM在反应体系中溶解的量明显增大,单体转化率增加,BMA/AM共聚物的特性黏度存在峰值.借助傅里叶变换红外(FTIR)、核磁共振(13C NMR)、动态力学分析法(DMA)、差示扫描量热法(DSC)和热重分析法(TGA)研究了环己醇对BMA/AM共聚物的结构和性能的影响,结果表明:AM只能与BMA进行共聚反应,随着环己醇的加入量的增加,BMA/AM共聚物的含量将增加,由此发泡阶段的酰亚胺化反应程度就越高,BMA/AM共聚物分子链中的酰亚胺环结构就越多,从而显著提高BMA/AM共聚物的性能,有望制备高性能的聚甲基丙烯酰亚胺(PMI)泡沫塑料.
The butyl methacrylate / acrylamide (BMA / AM) copolymer was prepared by free-radical bulk polymerization.The polar molecule cyclohexanol was introduced into the copolymerization system of BMA and AM to study the effect of cyclohexanol on the monomer conversion And the intrinsic viscosity of BMA / AM copolymer.With the increase of the amount of cyclohexanol, the amount of AM dissolved in the reaction system increased significantly, the monomer conversion rate increased, the intrinsic viscosity of BMA / AM copolymer peaked The effects of cyclohexanol on the BMA and the properties of BMA were studied by means of FTIR, 13C NMR, DMA, DSC and TGA, / AM copolymer. The results show that AM can only copolymerize with BMA, and the content of BMA / AM copolymer will increase with the increase of cyclohexanol addition, The higher the degree of imidization, the more the imide ring structure in the molecular chain of the BMA / AM copolymer, thereby significantly improving the performance of the BMA / AM copolymer. It is expected to prepare high performance polymethacryls Amine (PMI) foam.