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Cloud point of nonionic surfactant Triton X-45 in aqueous solution
Zhilong Wang1, Jian-He Xu, Wenzhi Zhang
1School of Pharmacy, Shanghai Jiao Tong University, Shanghai, PR China. zlwang@sjtu.edu.cn
Colloids and Surfaces. B, Biointerfaces
|September 11, 2007
Summary
Triton X-45, a nonionic surfactant, exhibits a cloud point above room temperature, contrary to common assumptions. This finding aids in developing biocompatible media for microbial applications.
Area of Science:
- Surfactant Chemistry
- Physical Chemistry
- Biotechnology
Background:
- Triton X-45 is a nonionic surfactant with low hydrophile-lypophile balance, dispersible in water at room temperature.
- Its Krafft point is above room temperature, influencing its phase behavior in aqueous solutions.
Purpose of the Study:
- To investigate the phase behavior of Triton X-45 in aqueous solutions.
- To determine the cloud point of Triton X-45 and the effect of additives.
- To challenge the prevalent concept of its cloud point being below room temperature.
Main Methods:
- Experimental determination of phase behavior.
- Analysis of the effect of additives on aqueous solutions containing Triton X-45.
Main Results:
- The cloud point of Triton X-45 in aqueous solution differs from conventional nonionic surfactant micelle solutions.
- Experimental data confirm the cloud point is above room temperature, refuting prior assumptions.
- Additives were used to further confirm the phase behavior.
Conclusions:
- The prevalent concept of Triton X-45's cloud point being below room temperature is experimentally disproven.
- The determined phase behavior is beneficial for creating biocompatible media for microbial growth.
- This research supports applications in whole-cell microbial transformation in non-aqueous media.
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