马来酸酐催化均聚反应研究

Study on Catalytic Polymerization of Maleic Anhydride

马来酸酐均聚产物有很高的应用价值。研究马来酸酐的均聚反应具有重要意义。该文研究了以纳米晶二氧化钛为催化剂的马来酸酐非均相催化聚合反应。采用红外光谱、核磁共振氢谱等手段对单体及聚合物进行了表征 ,并绘出反应体系的粘度 -时间曲线。结果表明 ,马来酸酐在DMF溶剂中可以被纳米晶二氧化钛催化均聚 ,分子量在 40 0～ 80 0之间。

The polymer of Maleic anhydride is of great practical value.The research on the polymerization of MA is very important.In this paper the heterogeneous catalytic polymerization of MA by nanocrystalline titania is studied.The monomer and polymer are characterized by IR and 1H NMR.The plot of viscosity vs time is made.The result shows that MA can be polymerized in DMF catalyzed by nanocrystalline titania.The molecular weight is of about 400～800.