Phase behavior and phase structure of 1:1 salt-free catanionic surfactant dodecyltrimethylammonium decanoate

- Salt-free catanionic dodecyltrimethylammonium decanoate (DTAD) was synthesized.
- Phase behavior of DTAD-water system at entire concentration range was studied.
- The influence of temperature on phase behavior of DTAD-water was studied.
- The DTAD-water system formed a large aqueous multi-phase region.