Performance Evolution of Alkylation Graphene Oxide Reinforcing High-Density Polyethylene

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.