A nonionic fluorocarbon surfactant—perfluorononenyl decaglycerolyl ether(PDE) was synthesized in the presence of Na2CO3 using perfluorononene(PFN) and decaglycerol(PG-10) as raw materials and N,N-dimethylformamide(DMF) as solvent. The surfactant prepared was characterized by IR and 19F-NMR, and the etherification reaction conditions were optimized. The critical micelle concentration(CMC) and emulsibility of the prepared PDE for benzene-H2 O were investigated. The results show that its CMC is 22.5 mN·m-1 whe...