Maleic anhydride grafted onto atactic polypropylene (aPP-gg-MAH) using a solution grafting reaction with ε-caprolactam promoter was investigated in this study. FTIR-ATR and elemental analysis (EA) measurements showed that the optimal degree of grafting (DG) of aPP-g-MAH could be achieved at a 5.03 wt% when ε-caprolactam was added as the radical protecting agent. aPP-g-MAH was then introduced to PP and PP/Nylon 6 (PP/Ny6) as a nucleation and compatibility agent, respectively. The DSC curve of the PP/aPP-g-MAH blend showed that the crystallization temperature of the blend was increased to 115.3 °C, higher than that of pristine PP. In addition, POM observations demonstrated that the size of the spherulites present in pristine PP shrank obviously. Moreover, the dynamic temperature variations in the POM observations revealed that the initial crystallization temperature of PP/aPP-g-MAH was much higher than that of pristine PP. The results indicate that the aPP-g-MAH additive was an excellent nucleating agent for the PP materials. When aPP-g-MAH was added as a compatibility agent for PP/Ny6 blending, the cryogenically fractured surface of the PP/Ny6/aPP-g-MAH (5 wt%) blend presented good compatibility between PP and the Ny6 domains. The crystallization temperatures of PP/Ny6 blends with 10–50 wt% Ny6 were higher than that of pure PP, and the blends with aPP-g-MAH had much higher of that. These findings reveal that aPP-g-MAH is a good nucleation and compatibility agent in PP/Ny6 blends.

马来酸酐接枝到无规聚丙烯（aPP- gg-MAH）与ε-己内酰胺促进剂进行溶液接枝反应。FTIR-ATR和元素分析（EA）测量表明，当添加ε-己内酰胺作为自由基保护剂时，aPP-g-MAH的最佳接枝度（DG）可以达到5.03 wt％。然后将aPP-g-MAH分别作为成核剂和相容剂引入到PP和PP / Nylon 6（PP / Ny6）中。PP / aPP-g-MAH共混物的DSC曲线表明，共混物的结晶温度提高到115.3°C，高于原始PP。此外，POM观察表明，原始PP中存在的球晶尺寸明显缩小。此外，POM观察中的动态温度变化表明，PP / aPP-g-MAH的初始结晶温度远高于原始PP。结果表明，aPP-g-MAH添加剂是PP材料的优良成核剂。当添加aPP-g-MAH作为用于PP / Ny6共混的相容剂时，PP / Ny6 / aPP-g-MAH（5 wt％）共混物的低温断裂表面表现出PP与Ny6结构域之间的良好相容性。含有10–50 wt％Ny6的PP / Ny6共混物的结晶温度比纯PP高，而具有aPP-g-MAH的共混物的结晶温度高得多。这些发现表明，aPP-g-MAH是PP / Ny6共混物中的良好成核剂和相容剂。结果表明，aPP-g-MAH添加剂是PP材料的优良成核剂。当添加aPP-g-MAH作为用于PP / Ny6共混的相容剂时，PP / Ny6 / aPP-g-MAH（5 wt％）共混物的低温断裂表面表现出PP与Ny6结构域之间的良好相容性。含有10–50 wt％Ny6的PP / Ny6共混物的结晶温度比纯PP高，而具有aPP-g-MAH的共混物的结晶温度高得多。这些发现表明，aPP-g-MAH是PP / Ny6共混物中的良好成核剂和相容剂。结果表明，aPP-g-MAH添加剂是PP材料的优良成核剂。当添加aPP-g-MAH作为PP / Ny6共混的相容剂时，PP / Ny6 / aPP-g-MAH（5 wt％）共混物的低温断裂表面在PP和Ny6结构域之间表现出良好的相容性。含有10–50 wt％Ny6的PP / Ny6共混物的结晶温度比纯PP高，而具有aPP-g-MAH的共混物的结晶温度高得多。这些发现表明，aPP-g-MAH是PP / Ny6共混物中的良好成核剂和相容剂。含10-50 wt％Ny6的PP / Ny6共混物的结晶温度比纯PP高，而含aPP-g-MAH的共混物的结晶温度高得多。这些发现表明，aPP-g-MAH是PP / Ny6共混物中的良好成核剂和相容剂。含有10–50 wt％Ny6的PP / Ny6共混物的结晶温度比纯PP高，而具有aPP-g-MAH的共混物的结晶温度高得多。这些发现表明，aPP-g-MAH是PP / Ny6共混物中的良好成核剂和相容剂。