Cross-Linked Dual-Layer Poly(vinylidene Fluoride) Hollow Fiber Membranes for Organic Solvent Nanofiltration 


Vol. 24,  No. 1, pp. 1-14, Jan.  2023
10.1007/s12221-023-00033-x


PDF
  Abstract

A dual-layer (DL) PVDF loose nanofiltration (NF) hollow fiber membrane (HFM) was designed via optimized phase inversion process using a continuous online-coating device. Subsequently, the loose DL PVDF HFM was cross-linked through a one-pot amine-based reaction to improve the solvent stability. Changes in chemical structure were characterized using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscope (XPS). The solvent stability in DMF of the membranes with different cross-linking time was investigated through measuring swelling ratio of the membranes. In addition, thermogravimetric analysis (TGA) and mechanical property were also conducted to study physico-chemical changes of the cross-linked DL PVDF hollow fiber membranes. The results showed that this cross-linking process significantly improved the stability in polar solvent, accompanied by a decrease in thermal stability and mechanical properties. A cross-linking time of 8 h was found to produce DL PVDF HFMs with most balanced properties. The performance of cross-linked membranes was evaluated via filtering various solutes in ethanol solution and typical solvents containing Rose bengal (RB). The cross-linked DL HFMs showed rejection of RB more than 99% in solvent with methanol, ethanol, isopropanol, and acetone and permeance of 9.3, 7.6, 5.2, and 8.7 L/(m2

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

C. Wang, "Cross-Linked Dual-Layer Poly(vinylidene Fluoride) Hollow Fiber Membranes for Organic Solvent Nanofiltration," Fibers and Polymers, vol. 24, no. 1, pp. 1-14, 2023. DOI: 10.1007/s12221-023-00033-x.

[ACM Style]

Chuanfeng Wang. 2023. Cross-Linked Dual-Layer Poly(vinylidene Fluoride) Hollow Fiber Membranes for Organic Solvent Nanofiltration. Fibers and Polymers, 24, 1, (2023), 1-14. DOI: 10.1007/s12221-023-00033-x.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5