甲基丙烯酸酯和丙烯酸酯基团转移共聚的竞聚率

Random Group Transfer Copolymerization of Methacrylate with Acrylates

甲基丙烯酸酯和丙烯酸酯基团转移共聚的竞聚率邹友思郭金全戴李宗潘容华（厦门大学化工系，厦门，３６１００５）基团转移聚合是制备极性单体的嵌段或无规共聚物的有效方法。如用甲基丙烯酸甲酯（ＭＭＡ）和丙烯酸丁酯（ＢＡ）进行嵌段共聚，可制得热塑性弹性体［１...

Random group transfer copolymerization of acrylates with methacrylate has been performed for two binary systems using 1 methoxy 2 methyl 1 trimethylsilyloxy propene(initiator) and tetrabutylammonium bibenzoate(anionic catalyst) in toluene solution. The copolymer compositions were determined by 1H NMR spectroscopy and the results evaluated by Kelen Tudos method. The monomer pairs concerned are (1) methyl acrylate(MA) and methyl methacrylate(MMA), (2) butyl acrylate(BA) and MMA. The reactivity ratios were found to be r MA =8.29, r MMA =0.04 and r BA =6.74, r MMA =0.14.