Firstly,　polymerizable　cationic　Gemini　surfactants　PC11-n-11(n=2,　4,　6)　with　different　linker　chain　lengths　were　synthesized,the　structure　was　characterized　by　1H　NMR　and　FTIR.　Secondly,　the　interfacial　properties,　micelle　diameter　distribution,　wetting　properties　and　high　internal　phase　emulsion　(HIPE)　stability　of　PC11-n-11　were　studied.　The　results　demonstrate　that　the　interfacial　properties　of　the　prepared　PC11-n-11　are　significantly　superior　to　those　of　the　conventional　surfactant　(DTAB),　with　enhanced　wetting　performance.　As　the　spacer　chain　length　increases,　CMC　and　Γmaxgradually　decrease,　while　Amin　gradually　increases,　leading　to　improved　interfacial　properties.　Among　them,　PC11-4-11　and　PC11-6-11　have　good　stability　to　HIPE.　The　porous　polymer　composite　of　chitosan　and　polyacrylamide　was　successfully　prepared　by　the　HIPE　template　method　using　PC11-6-11　as　a　stabilizer.　©　2025　Materials　China.　All　rights　reserved.