中文摘要：

通过十八烷基异氰酸酯对氧化石墨烯（GO）进行功能化改性，成功制备了烷基化改性石墨烯（iGO）。通过溶液共混的方式制备了氧化石墨烯／聚丙烯（GO／PP）复合材料和功能化氧化石墨烯／聚丙烯（iGO／PP）复合材料，利用差示扫描量热仪（DSC）分析了iGO／PP和GO／PP复合材料的非等温结晶动力学。结果表明，与GO相比，iGO和PP基体有更好的相容性。采用Ozawa模型和Mo模型均可以很好地描述GO／PP及iGO／PP复合材料的非等温结晶过程。

英文摘要：

The isocyanate-treated graphene oxides （iGO） were successfully fabricated by graftingoctadecyl isocyanate onto the surface of graphene oxides （GO） with isoeyanicacid octadecyl ester. Thegraphene oxide/polypropylene （GO/PP） and the functional graphene oxide/polypropylene （iGO/PP）composite materials were prepared by solution blending method. The nonisothermal crystallization kinetics ofiGO/PP and GO/PP composites were investigated by differential scanning calorimeter （DSC）. The resultsshow that iGO exhibits a better compatibility with the PP matrix compared with GO. Both Ozawa model andMo model can well describe the nonisothermal crystallization process for GO/PP and iGO/PP composites.