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Incorporation of Cellulose Nanocrystals (CNCs) into the Polyamide Layer of Thin-Film Composite (TFC) Nanofiltration Membranes for Enhanced Separation Performance and Antifouling Properties.

Publication ,  Journal Article
Bai, L; Liu, Y; Bossa, N; Ding, A; Ren, N; Li, G; Liang, H; Wiesner, MR
Published in: Environmental science & technology
October 2018

To achieve greater separation performance and antifouling properties in a thin-film composite (TFC) nanofiltration membrane, cellulose nanocrystals (CNCs) were incorporated into the polyamide layer of a TFC membrane for the first time. The results of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy (XPS) confirmed the successful formation of the CNC-polyamide composite layer. Surface characterization results revealed differences in the morphologies of the CNC-TFC membranes compared with a control membrane (CNC-TFC-0). Streaming potential measurements and molecular weight cutoff (MWCO) characterizations showed that the CNC-TFC membranes exhibited a greater negative surface charge and a smaller MWCO as the CNC content increased. The CNC-TFC membranes showed enhanced hydrophilicity and increased permeability. With the incorporation of only 0.020 wt % CNCs, the permeability of the CNC-TFC membrane increased by 60.0% over that of the polyamide TFC without CNC. Rejection of Na2SO4 and MgSO4 by the CNC-TFC membranes was similar to that observed for the CNC-TFC-0 membrane, at values of approximately 98.7% and 98.8%, respectively, indicating that divalent salt rejection was not sacrificed. The monovalent ion rejection tended to increase as the CNC content increased. In addition, the CNC-TFC membranes exhibited enhanced antifouling properties due to their increased hydrophilicity and more negatively charged surfaces.

Duke Scholars

Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

October 2018

Volume

52

Issue

19

Start / End Page

11178 / 11187

Related Subject Headings

  • Permeability
  • Nylons
  • Nanoparticles
  • Membranes, Artificial
  • Environmental Sciences
  • Cellulose
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Bai, L., Liu, Y., Bossa, N., Ding, A., Ren, N., Li, G., … Wiesner, M. R. (2018). Incorporation of Cellulose Nanocrystals (CNCs) into the Polyamide Layer of Thin-Film Composite (TFC) Nanofiltration Membranes for Enhanced Separation Performance and Antifouling Properties. Environmental Science & Technology, 52(19), 11178–11187. https://doi.org/10.1021/acs.est.8b04102
Bai, Langming, Yatao Liu, Nathan Bossa, An Ding, Nanqi Ren, Guibai Li, Heng Liang, and Mark R. Wiesner. “Incorporation of Cellulose Nanocrystals (CNCs) into the Polyamide Layer of Thin-Film Composite (TFC) Nanofiltration Membranes for Enhanced Separation Performance and Antifouling Properties.Environmental Science & Technology 52, no. 19 (October 2018): 11178–87. https://doi.org/10.1021/acs.est.8b04102.
Bai, Langming, et al. “Incorporation of Cellulose Nanocrystals (CNCs) into the Polyamide Layer of Thin-Film Composite (TFC) Nanofiltration Membranes for Enhanced Separation Performance and Antifouling Properties.Environmental Science & Technology, vol. 52, no. 19, Oct. 2018, pp. 11178–87. Epmc, doi:10.1021/acs.est.8b04102.
Bai L, Liu Y, Bossa N, Ding A, Ren N, Li G, Liang H, Wiesner MR. Incorporation of Cellulose Nanocrystals (CNCs) into the Polyamide Layer of Thin-Film Composite (TFC) Nanofiltration Membranes for Enhanced Separation Performance and Antifouling Properties. Environmental science & technology. 2018 Oct;52(19):11178–11187.
Journal cover image

Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

October 2018

Volume

52

Issue

19

Start / End Page

11178 / 11187

Related Subject Headings

  • Permeability
  • Nylons
  • Nanoparticles
  • Membranes, Artificial
  • Environmental Sciences
  • Cellulose