▎ 摘　　要

In this study, an "intelligent" graphene oxide-polyacrylic acid (GO-PAA) nanocomposite hydrogel was synthesized using a simple PAA cross-linking reaction. The incorporation of the GO phase into the PAA hydrogel was verified using Fourier transformation infrared spectroscopy and ultraviolet-vis spectroscopy. The mechanical, swelling and electroresponsive properties of the GO-PAA nanocomposite hydrogel were studied. The results showed that the addition of a small quantity of GO (3 wt%) did not obviously decrease the transmittance of the pristine PAA hydrogel. After adding GO, both the compressive strength and the water absorbing capacity of the GO-PAA nanocomposite hydrogel were enhanced as expected. Furthermore, the GO-PAA hydrogel displayed a much higher electroresponsive rate compared with the PAA hydrogel, especially under stronger electrical fields. The facile and efficient preparation of the GO-PAA composite hydrogel means it will have potential applications as a smart and super absorbent composite.