▎ 摘　　要

NOVELTY - Preparing a triblock polymer-grafted reduced graphene oxide composite material comprises: e.g. carrying out synthesis of a thermo-sensitive triblock polymer polydimethylsiloxane-b-poly(n-isopropylacrylamide-thiol) ((PDMS-b- PNIPAM-SH)2); preparing the thermo-sensitive triblock polymer (PNIPAM-PDMS-PNIPAM) through reversible addition fragmentation chain-transfer (RAFT) polymerization by taking hydroxy-terminated PDMS (HO-PDMS-OH) as an active center, grafting cyanvalerate dithiobenzoic acid (CPADB) to prepare a macromolecular chain converter (chain transfer agent (CTA)-PDMS-CTA), by taking N-isopropyl acrylamide (NIPAM) as a monomer, and azobisisobutyronitrile (AIBN) as an initiator, carrying out a polymerization reaction at both ends of CTA-PDMS-CTA, and grafting PNIPAM to prepare PDMS-b-(PNIPAM)2; and finally by taking diamine as a reducer, reducing dithioester at both ends of a triblock polymer to prepare PDMS-b-(PNIPAM-SH)2. USE - The method is useful for preparing a triblock polymer-grafted reduced graphene oxide composite material which is used in a solar powered thermo-sensitive intelligent fog water collection material (claimed). ADVANTAGE - The method: improves fog water adsorption and desorption efficiency; and provides switchable wettability. DETAILED DESCRIPTION - Preparing a triblock polymer-grafted reduced graphene oxide composite material comprises: carrying out synthesis of a thermo-sensitive triblock polymer polydimethylsiloxane-b-poly(n-isopropylacrylamide-thiol (PDMS-b-PNIPAM-SH)2); preparing the thermo-sensitive triblock polymer (PNIPAM-PDMS-PNIPAM) through reversible addition fragmentation chain-transfer (RAFT) polymerization by taking hydroxy-terminated PDMS (HO-PDMS-OH) as an active center, grafting cyanvalerate dithiobenzoic acid (CPADB) to prepare a macromolecular chain converter (CTA-PDMS-CTA), by taking N-isopropyl acrylamide (NIPAM) as a monomer, and azobisisobutyronitrile (AIBN) as an initiator, carrying out a polymerization reaction at both ends of CTA-PDMS-CTA, and grafting PNIPAM to prepare PDMS-b-(PNIPAM)2; finally by taking diamine as a reducer, reducing dithioester at both ends of a triblock polymer to prepare PDMS-b-(PNIPAM-SH)2; grafting the triblock polymer to the surface of reduced-graphene oxide (RGO)-polydopamine (PDA) through a Michael addition reaction; and grafting the triblock polymer to the surface of the RGO-PDA through a Michael addition reaction, namely, firstly, through an auto-polymerization reaction of dopamine (DA), forming a layer of polydopamine (PDA) on the surface of graphene oxide (GO) to prepare RGO-PDA, then through a Michael addition reaction, grafting the triblock polymer to the surface of RGO-PDA to obtain a triblock polymer-grafted reduced graphene oxide composite material. An INDEPENDENT CLAIM is also included for obtaining the solar powered thermo-sensitive intelligent fog water collection material to construct a fog water collection device comprising applying the triblock polymer-grafted reduced graphene oxide composite material i.e. self-assembled on the surface of a three-dimensional porous foam through a thermal reduction reaction to obtain the solar powered thermo-sensitive intelligent fog water collection material to construct a fog water collection device.