Alkylated graphene oxide (MGO) was rapidly prepared by a reverse extraction technology in aqueous solution using amphoteric surfactants (LAO). The MGO has an excellent lipophilicity and stability in the air atmosphere. After being incorporated in high-density polyethylene (HDPE) by solution compounding, the HDPE/MGO composites exhibited an obvious enhancement in comprehensive properties of composites, relying on the uniform dispersion and the strong interfacial interaction between MGO and HDPE. The typical and abnormal behaviors of the HDPE/MGO in mechanical and physical properties are systematically analyzed and discussed. Moreover, it is found that the critical intensity ratio of I_CH2/I_C═C/C–C in Raman spectrum corresponding to the electric percolation threshold of HDPE/MGO is about 1, which is still well established in PP/MGO composites.

中文翻译：

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烷基化氧化石墨烯增强高密度聚乙烯的性能演变

使用两性表面活性剂（LAO），通过反萃取技术在水溶液中快速制备了烷基化氧化石墨烯（MGO）。MGO在空气中具有极好的亲脂性和稳定性。HDPE / MGO复合材料通过溶液配混掺入高密度聚乙烯（HDPE）中后，依靠MGO和HDPE之间的均匀分散和强界面相互作用，复合材料的综合性能有了明显提高。系统地分析和讨论了HDPE / MGO在机械和物理性能方面的典型和异常行为。此外，据发现，临界强度比我_CH2 /我_{C = C / C-C} HDPE / MGO的电渗流阈值对应的拉曼光谱中的α约为1，这在PP / MGO复合材料中仍然是公认的。