▎ 摘　　要

A green and facile preparation method of GO/NR nanocomposite film was developed, in which self-crosslinking was formed in nanocomposite film under assistance of protein. The self-crosslinking of GO/NR nanocomposite film did not only enhance the crosslinking density of GO/NR nanocomposite film, but also enhanced interfacial interactions between GO and NR matrix. Furthermore, there were no vulcanization ingredients and surface chemical modification in the process. Thereby, the preparation process showed environmentally friendly and green, meanwhile enhanced effectively mechanical properties and barrier property of GO/NR nanocomposite film. This work provides a green and facile method for preparing high-performance GO/NR nanocomposite film for various applications.