Journal
APPLIED WATER SCIENCE
Volume 12, Issue 3, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13201-021-01499-x
Keywords
PVDF membrane; beta phase; Ionic liquid; N-TIPS
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Funding
- National Natural Science Foundation of China [22078146]
- National Key R&D Program of China [2020YFC0860903]
- Natural Science Foundation of Jiangsu Province [BK20200091]
- Six Talent Peaks Project in Jiangsu Province [JNHB-036]
- Materials-Oriented Chemical Engineering State Key Laboratory Program [KL19-04]
- Kempe Foundation [SMK-1850]
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In this study, the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate was successfully used as a single solvent in preparing high-performance PVDF membranes through the N-TIPs method. By adjusting the quenching temperature and additive content, PVDF membranes with a narrow pore size distribution and high flux were obtained.
In this paper, ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate was the first time successfully utilized as single solvent in preparing the PVDF membrane with a good performance by N-TIPs method. The effects of quenching temperature and hydrophilic additive content on the morphology, permeability, and strength of the membranes were studied. All the prepared PVDF membranes were proved to be a pure beta phase by FTIR and XRD, possessing a narrow pore size distribution. By adjusting quenching temperature and additive content, membranes with a flux of 383.2 L/m(2) h and concentrated pore diameter of 26 nm obtained.
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