▎ 摘　　要

NOVELTY - A graphene oxide/isostearic acid composite separation membrane preparing method involves dissolving graphene oxide in an anhydrous ethanol solution to obtain a mixed solution-1 and dissolving isostearic acid in anhydrous ethanol to obtain a mixed solution-2. The mixed liquid-1 and the mixed liquid-2 are uniformly mixed to obtain a mixed liquid-3, and sealed with a wrap film. The mixed liquid-3 is heated and reacted in a water bath to obtain reaction solution. The reaction solution is vacuum dried to obtain graphene oxide/isostearic acid complex. The graphene oxide/isostearic acid complex is dissolved in deionized water, magnetically stirred to obtain mixed liquid-4, followed by vacuum-filtering the mixed liquid-4 using commercial mixed cellulose membrane as base film and drying under vacuum to obtain the finished product. USE - Method for preparing graphene oxide/isostearic acid composite separation membrane for separating oil-containing waste water (claimed). ADVANTAGE - The method enables preparing graphene oxide/isostearic acid composite separation membrane with excellent thermal stability and better stability, in simple and easy manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene oxide/isostearic acid composite separation membrane prepared by the method.