THE CRYSTALLINE MOLECULAR-COMPLEX BETWEEN CATIONIC SURFACTANT AND SOME ADDITIVE SUBSTANCES .1. COMPLEX-FORMATION WITH PHENOL DERIVATIVE AS ADDITIVES

It was established that many crystalline molecular complexes composed of cationic surfactants such as CTAB and several phenolic derivatives were obtained from an appropriate concentrated solution system in which a remarkable viscoelasticity was developed. It is revealed that the molecular complexes have an unambiguous composition of 1 : 1 molar ratio of surfactants to phenolic additives. The molecular complexes also showed characteristic endothermicity of a degree that suggests the specimens to be single and a pure species. However, through repeated runs the thermal stability of the complexes seemed to be rather poor, as exhibited by a profile change in thermograms of DSC.