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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Li, Xinfang Zhu, Dongsheng Chen, Gang Wang, Xianju |
| Copyright Year | 2007 |
| Abstract | Dispersion and stability of Cu nano-suspensions with dispersant is the important base for the study of rheology and heat transfer enhancement of the suspensions. This paper presented a procedure for preparing a nanofluid which was a suspension consisting of nanophase powders and a base liquids. By means of the procedure, Cu-H2O nanofluids with and without dispersant were prepared, whose sedimentation photographs were given to illustrate the stability and evenness of suspension with dispersant. Dispersion and stability of Cu nanoparticles in water were studied under different pH values and the concentration of sodium dodecylbenzenesulfonate (SDBS) dispersant by the method of zeta potential, absorbency and sedimentation photographs. The results show that zeta potential has very corresponding relation with absorbency, and the higher absolute value of zeta potential and absorbency are, the better dispersion and stability in system is. The absolute value of zeta potential and absorbency are higher at pH 9.5. SDBS can significantly increase the absolute value of the zeta potential of the particle surfaces by electrostatic repulsions, which leads to the enhancement of the stability of the Cu suspensions. The optimizing concentration for SDBS in the 0.1% copper nano-suspensions is 0.07%, which has the best disperse results. |
| Sponsorship | Nanotechnology Institute |
| Starting Page | 971 |
| Ending Page | 975 |
| Page Count | 5 |
| File Format | |
| ISBN | 0791842657 |
| DOI | 10.1115/MNC2007-21091 |
| e-ISBN | 0791837947 |
| Volume Number | First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B |
| Conference Proceedings | 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems |
| Language | English |
| Publisher Date | 2007-01-10 |
| Publisher Place | Sanya, Hainan, China |
| Access Restriction | Subscribed |
| Subject Keyword | Dispersion and stability Absorbency Copper nano-suspensions Sdbs Zeta potential Copper Stability |
| Content Type | Text |
| Resource Type | Article |
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