Citation: Chang Gang HU, Hui XIE, Gan Zuo LI, Ya AN, Zhong Ni WANG, Xiao Yi ZHANG, Jing Ping TIAN. Study on the Formation of Urea or Salt Induced Vesicles in Built-system Surfactant[J]. Chinese Chemical Letters, ;2005, 16(5): 681-684. shu

Study on the Formation of Urea or Salt Induced Vesicles in Built-system Surfactant

1.
Key Lab for Colloid and Interface Chemistry of State Education Ministry, Jinan 250100;
2.
School of Physics and Chemistry, Guizhou Normal University, Guiyang 550001;
3.
Guiyang No. 18 Middle School, Guiyang 550002

Received Date: 16 January 2004

Fund Project: This work supported by the National Natural Science Foundation of China (No. 30370945), Ministry of Science and Technology (G 2000078104,2003CCA02900),Guizhou Provincial Governor Foundation (No. 6, 2001), Guizhou Education Department (No. 206, 2003) and Guizhou Normal University Young Teachers Development Scientific Research Found.

The spontaneous formation of vesicles in the aqueous of cationic surfactant phosphate(PTA) and anionic surfactant sodium dodecyl sulfate (SDS) at certain mixing ratios have obtained¹.The addition of urea or NaI will expand the range of spontaneous vesicle formation. The fact is demonstrated by negative-staining transmission electron microscope(TEM) and dynamic light scattering(DLS) methods. The phenomenon especially in the part of urea is reported by us at first.Mechanism of urea/NaI-induced vesicles formation is discussed from the viewpoint of the molecular geometry packing parameter f, conformation and interaction.
- Vesicle,
- spontaneous formation,
- negative-staining TEM,
- dynamic light scattering
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