[1] Pei Lixia, Zhang Lizhi(Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, South China University of Technology, Guangzhou 00, et al. Improvement of hydrophilicity of porous PVDF membraneswith LiCl additives [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 201-204. [doi:10.3969/j.issn.1003-7985.2010.02.012]
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Improvement of hydrophilicity of porous PVDF membraneswith LiCl additives(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 26
- Issue:
- 2010 2
- Page:
- 201-204
- Research Field:
- Chemistry and Chemical Engineering
- Publishing date:
- 2010-06-30
Info
- Title:
- Improvement of hydrophilicity of porous PVDF membraneswith LiCl additives
- Author(s):
- Pei Lixia; Zhang Lizhi(Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education; South China University of Technology; Guangzhou 510640; China)
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- PACS:
- TQ021
- DOI:
- 10.3969/j.issn.1003-7985.2010.02.012
- Abstract:
- Porous polyvinylidene fluoride(PVDF)membranes blended with LiCl are prepared through the phase inversion method to obtain a good support layer for air dehumidification.The hydrophilicity of the resulting membrane is evaluated by water contact angle measurements and vapor adsorption tests.The moisture permeation performance of the membrane is measured by permeation tests in terms of total mass transfer coefficients and moisture permeability rates.It is found that water contact angles and water vapor adsorption capacities increase with the increasing LiCl content in the casting solution.As the LiCl content increases, the total mass transfer coefficient increases slightly at a low LiCl content(below 2.5%)and then improves greatly at a high LiCl content(above 2.5%), whereas the moisture permeation rate increases.The results demonstrate that LiCl can remarkably improve the hydrophilicity of PVDF membranes, and then greatly enhance moisture permeation performance.
References:
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Memo
- Memo:
-
Biographies: Pei Lixia(1977—), female, doctor;Zhang Lizhi(corresponding author), male, doctor, professor, lzzhang@scut.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.50676034), the National High Technology Research and Development Program of China(863 Program)(No.2008AA05Z206).
Citation: Pei Lixia, Zhang Lizhi.Improvement of hydrophilicity of porous PVDF membranes with LiCl additives[J].Journal of Southeast University(English Edition), 2010, 26(2):201-204.