Thermosensitive graphene/polymer composite material and preparation method thereof

The invention relates to a thermosensitive graphene/polymer composite material and a preparation method thereof. The composite material comprises the following steps: 1) preparing monolayer or multilayer graphite oxide by a chemical oxidation method; 2) reacting the graphite oxide with thionyl chloride, ethene diamine and 2-bromopropionyl bromide in sequence, and filtering, washing and drying the product; 3) placing the graphite oxide which is obtained by the step 2) and has initiating group on the surface in mixed solution of N-isopropylacrylamide, a catalyst, anti-activator and ligand dimethylsulfoxide, stirring the mixture for reacting, and performing centrifuging, washing and vacuum drying on the mixture to obtain the graphite oxide/polymer composite material; and 4) reducing the graphite oxide/polymer composite material by using a chemical reductant to obtain the thermosensitive graphene/polymer composite material. The method has the characteristics that: 1) the method has simple condition and is easy for operation; and 2) the comprehensive performance of the composite material is improved, and the composite material has good application prospect in the fields of sensors, environment, medicament control release and the like.