以偶氮二异庚腈(ABVN)为引发剂,在高浓度的1,1-二苯基乙烯(DPE)存在下,于60℃合成了聚甲基丙烯酸甲酯(PMMA)低聚物,并通过凝胶渗透色谱(GPC)和电喷雾电离飞行时间质谱(ESI-Q-TOF-MS)进行表征。结果表明,即使在高浓度的DPE下,也只有1个DPE分子结合到PMMA的聚合物链中。进而在PMMA前驱体为大分子引发剂的条件下引发第二单体丙烯酸叔丁酯(tBA)的聚合,成功得到PMMA-b-PtBA嵌段聚合物,并通过GPC和核磁表征。 Poly (methyl methacrylate) (PMMA) oligomer was synthesized at 60 ℃ with azobisisobutyronitrile (ABVN) as initiator in the presence of high concentration of 1,1 - diphenylethylene (DPE) And characterized by gel permeation chromatography (GPC) and electrospray ionization time of flight mass spectrometry (ESI-Q-TOF-MS). The results show that only one DPE molecule is incorporated into the PMMA polymer chain, even at high concentrations of DPE. Furthermore, PMMA-b-PtBA block copolymer was successfully obtained by polymerizing tert-butyl acrylate (tBA) with the PMMA precursor as a macroinitiator, which was characterized by GPC and NMR.