▎ 摘　　要

An effective method of in-situ anionic ring-opening polymerization of caprolactam (CL) is adopted to prepare polyamide-6 (PA6)/reduced graphene oxide (RGO) composite microspheres utilizing reaction-induced phase inversion of polymer pairs PA6/polystyrene (PS) with the presence of graphene oxide (GO). The reduction of GO with CL as reducing agent in the preparation process of microspheres is studied in detail. The morphology, functional groups, crystallization properties and thermal stability of PA6-based composite microspheres are analyzed by different techniques (i. e. SEM, TEM, FTIR, DSC and TGA). Results indicate that both crystallinity and melting temperature of PA6/RGO composite microspheres are improved by RGO inclusion, and the thermal property of PA6/RGO microspheres is obviously better than that of neat PA6 microspheres.