▎ 摘　　要

The traditional membranes are limited by their fixed pore size for application. The emergence of actively responsive separation membranes will revolutionize the future applications of these membranes. In this study, thermally responsive of three variable specific functional groups polymers including poly(NIPAm-random-acrylic acid), poly(NIPAm-random-acrylamide), and poly(NIPAm-random-modified arginine) were synthesized and the reacted with graphene oxide (GO) to produce thermally responsive GO-mPNIPAm framework membranes. Then, the effects of the response mechanism in the one-dimensional (1D) polymer chains intercalated with twodimensional (2D) GO sheets for efficiency dehydration and separation of isopropanol were investigated. The grafted ratio of GO-PNCOOH (3.83), GO-PNCONH2 (3.76) and GO-PNCOOH, (NH2) (4.01) exhibited the molecular chain expansion and contraction of general thermally responsive materials. Subsequently, the cross-linked GO-PNCOOH, NH2 exhibited the two-stage slope value rise from 66.36 to 174.69 at 25 degrees C to 40 degrees C. Further, we used X-ray diffraction (XRD) under dry and wet conditions and positron annihilation lifetime spectrometry (PALS) to explore the thermal response mechanisms of 1D intercalated with 2D materials, these resultants can be helpful for the structural design and practical application of responsive materials.