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Citation: JIA Guo-Zhu, HUANG Ka-Ma, YANG Xiao-Qing, SONG Jian-Ping, YANG Li-Jun. Specific Phenomenon of Effective Permittivity for DMF-H₂O Solution[J]. Acta Physico-Chimica Sinica, ;2009, 25(09): 1906-1910. doi: 10.3866/PKU.WHXB20090922 shu

Specific Phenomenon of Effective Permittivity for DMF-H₂O Solution

1.
School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, P. R. China

Received Date: 31 March 2009
Available Online: 31 July 2009

The permittivities of N,N-dimethylformamide (DMF), water (H2O), and DMF-H2O mixture solution were measured by a resonant cavity perturbation method at 2.45 GHz and 288, 298, and 313 K. The measured results showed a specific phenomenon wherein the imaginary part of the solution's permittivity was larger than that of each of the components. A theoretical calculation indicates that the reason for this phenomenon is high frequency friction increasing in the DMF and H2O mixture. This implies that a new formula needs to be formulated to include hydrogen bond contributions for the explanation of this specific phenomenon.
- Mixture solution,
- Effective permittivity,
- Specific phenomenon,
- Mixture formula,
- Hydrogen bond
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沈阳化工大学材料科学与工程学院沈阳 110142

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Specific Phenomenon of Effective Permittivity for DMF-H₂O Solution