▎ 摘　　要

NOVELTY - Graphene nanosheet/carbon nano-fiber material comprises graphene entangled distribution of graphene oxide nanosheets and cellulose nanofibers in material and graphene oxide nanosheet layer is interposed between the cellulose nanofibers entangled with each other. USE - Used as graphene nanosheet/carbon nanofiber material. ADVANTAGE - The material has water-induced deformation memory function; has certain tensile break strength and certain elongation at break, good thermal stability, water-sensitive shape memory function and can be applied to biomedicine, biosensor, intelligent wearing. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the graphene nanosheet/carbon nanofiber material (i) making cellulose nanofibers from cotton fiber, and adding graphene oxide nanosheets, mixing the two by solution casting and phase separation regeneration is carried out using ethanol as a coagulant, and (ii) intercalating gelled body in which graphene oxide nanosheets and entangling cellulose nanofibers and crosslinking, hot pressed into a graphene oxide nanosheet/cellulose nanofiber material; and (2) testing a water-induced deformation memory function, comprising (i) cutting the graphene oxide nanosheet/cellulose nanofiber material into rectangular strips having a thickness of 100-200 mu m, folding in half and clamping with a clip, and placing in a constant temperature oven at 60 degrees C, (ii) taking out from the oven and placing it in a petri dish at normal temperature, loosening the clip, letting the rectangular strip relax for 4 hours, and recording the rectangular strip angle as the initial angle R0, (iii) dropping a few drops of deionized water at the angle between the rectangular strips, and start timing from the angled position and taking a picture to record the time elapsed from the change of the corner of the rectangular strip, and recording the angle of the current moment as the recovery angle RH (iv) calculating the deformation recovery rate F according to the formula F=(RH-R0)/(180 degrees -R0), and (v) repeating steps 10, 30, and 50 times, recording the time required to reach the recovery rate of greater than 90% and 100%, and evaluating the number of cycles of use, and completing the water-induced deformation memory function test.