Fabrication and characterization of multi-walled carbon nanotubes/polymer blend membranes

Jae Hyun Choi, Jonggeon Jegal, Woo Nyon Kim

Research output: Contribution to journalArticle

342 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes (MWNTs)/polysulfone (PSf) blend membranes were prepared by a phase inversion process, using N-methyl-2-pyrrolidinone (NMP) as a solvent and water as a coagulant. Before making the blend membranes, MWNTs were first treated with strong acid to make them well dispersed in organic solvents such as NMP for the preparation of homogeneous MWNTs/PSf blend solutions. The prepared MWNTs/PSf blend membranes were then characterized using the several analytical methods such as a Fourier transform infrared (FTIR) spectroscopy, a contact angle goniometer, a scanning electron microscopy (SEM) and permeation tests. Because of the hydrophiic MWNTs, the surface of the MWNTs/PSf blend membranes appeared to be more hydrophilic than a just PSf membrane. The carboxylic acid functional groups developed by the treatment with acid on the surface of MWNTs seemed to act to increase hydrophilicity of the blend membranes. The morphology and permeation properties of the blend membranes were also found to be dependent on the amounts of MWNTs used. The pore size of the blend membranes increased along with the contents of MWNTs up to 1.5%, then decreased, and at 4.0% of MWNTs, it became even smaller than PSf membrane. The PSf membrane with 4.0% of MWNTs showed higher flux and rejection than the PSf membrane without MWNTs.

Original languageEnglish
Pages (from-to)406-415
Number of pages10
JournalJournal of Membrane Science
Volume284
Issue number1-2
DOIs
Publication statusPublished - 2006 Nov 1

Fingerprint

Carbon Nanotubes
polymer blends
Polymer blends
Carbon nanotubes
Polymers
Polysulfones
carbon nanotubes
membranes
Membranes
Fabrication
fabrication
Permeation
Goniometers
Coagulants
goniometers
acids
Acids
polysulfone P 1700
Hydrophilicity
Fourier Transform Infrared Spectroscopy

Keywords

  • Composite membrane
  • Hydrophilicity
  • Multi-walled carbon nanotubes
  • Permeability
  • Phase inversion
  • Polysulfone

ASJC Scopus subject areas

  • Filtration and Separation
  • Polymers and Plastics

Cite this

Fabrication and characterization of multi-walled carbon nanotubes/polymer blend membranes. / Choi, Jae Hyun; Jegal, Jonggeon; Kim, Woo Nyon.

In: Journal of Membrane Science, Vol. 284, No. 1-2, 01.11.2006, p. 406-415.

Research output: Contribution to journalArticle

@article{c36531005e2241919c0ba6fe2b772a29,
title = "Fabrication and characterization of multi-walled carbon nanotubes/polymer blend membranes",
abstract = "Multi-walled carbon nanotubes (MWNTs)/polysulfone (PSf) blend membranes were prepared by a phase inversion process, using N-methyl-2-pyrrolidinone (NMP) as a solvent and water as a coagulant. Before making the blend membranes, MWNTs were first treated with strong acid to make them well dispersed in organic solvents such as NMP for the preparation of homogeneous MWNTs/PSf blend solutions. The prepared MWNTs/PSf blend membranes were then characterized using the several analytical methods such as a Fourier transform infrared (FTIR) spectroscopy, a contact angle goniometer, a scanning electron microscopy (SEM) and permeation tests. Because of the hydrophiic MWNTs, the surface of the MWNTs/PSf blend membranes appeared to be more hydrophilic than a just PSf membrane. The carboxylic acid functional groups developed by the treatment with acid on the surface of MWNTs seemed to act to increase hydrophilicity of the blend membranes. The morphology and permeation properties of the blend membranes were also found to be dependent on the amounts of MWNTs used. The pore size of the blend membranes increased along with the contents of MWNTs up to 1.5{\%}, then decreased, and at 4.0{\%} of MWNTs, it became even smaller than PSf membrane. The PSf membrane with 4.0{\%} of MWNTs showed higher flux and rejection than the PSf membrane without MWNTs.",
keywords = "Composite membrane, Hydrophilicity, Multi-walled carbon nanotubes, Permeability, Phase inversion, Polysulfone",
author = "Choi, {Jae Hyun} and Jonggeon Jegal and Kim, {Woo Nyon}",
year = "2006",
month = "11",
day = "1",
doi = "10.1016/j.memsci.2006.08.013",
language = "English",
volume = "284",
pages = "406--415",
journal = "Jornal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Fabrication and characterization of multi-walled carbon nanotubes/polymer blend membranes

AU - Choi, Jae Hyun

AU - Jegal, Jonggeon

AU - Kim, Woo Nyon

PY - 2006/11/1

Y1 - 2006/11/1

N2 - Multi-walled carbon nanotubes (MWNTs)/polysulfone (PSf) blend membranes were prepared by a phase inversion process, using N-methyl-2-pyrrolidinone (NMP) as a solvent and water as a coagulant. Before making the blend membranes, MWNTs were first treated with strong acid to make them well dispersed in organic solvents such as NMP for the preparation of homogeneous MWNTs/PSf blend solutions. The prepared MWNTs/PSf blend membranes were then characterized using the several analytical methods such as a Fourier transform infrared (FTIR) spectroscopy, a contact angle goniometer, a scanning electron microscopy (SEM) and permeation tests. Because of the hydrophiic MWNTs, the surface of the MWNTs/PSf blend membranes appeared to be more hydrophilic than a just PSf membrane. The carboxylic acid functional groups developed by the treatment with acid on the surface of MWNTs seemed to act to increase hydrophilicity of the blend membranes. The morphology and permeation properties of the blend membranes were also found to be dependent on the amounts of MWNTs used. The pore size of the blend membranes increased along with the contents of MWNTs up to 1.5%, then decreased, and at 4.0% of MWNTs, it became even smaller than PSf membrane. The PSf membrane with 4.0% of MWNTs showed higher flux and rejection than the PSf membrane without MWNTs.

AB - Multi-walled carbon nanotubes (MWNTs)/polysulfone (PSf) blend membranes were prepared by a phase inversion process, using N-methyl-2-pyrrolidinone (NMP) as a solvent and water as a coagulant. Before making the blend membranes, MWNTs were first treated with strong acid to make them well dispersed in organic solvents such as NMP for the preparation of homogeneous MWNTs/PSf blend solutions. The prepared MWNTs/PSf blend membranes were then characterized using the several analytical methods such as a Fourier transform infrared (FTIR) spectroscopy, a contact angle goniometer, a scanning electron microscopy (SEM) and permeation tests. Because of the hydrophiic MWNTs, the surface of the MWNTs/PSf blend membranes appeared to be more hydrophilic than a just PSf membrane. The carboxylic acid functional groups developed by the treatment with acid on the surface of MWNTs seemed to act to increase hydrophilicity of the blend membranes. The morphology and permeation properties of the blend membranes were also found to be dependent on the amounts of MWNTs used. The pore size of the blend membranes increased along with the contents of MWNTs up to 1.5%, then decreased, and at 4.0% of MWNTs, it became even smaller than PSf membrane. The PSf membrane with 4.0% of MWNTs showed higher flux and rejection than the PSf membrane without MWNTs.

KW - Composite membrane

KW - Hydrophilicity

KW - Multi-walled carbon nanotubes

KW - Permeability

KW - Phase inversion

KW - Polysulfone

UR - http://www.scopus.com/inward/record.url?scp=33748920747&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748920747&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2006.08.013

DO - 10.1016/j.memsci.2006.08.013

M3 - Article

VL - 284

SP - 406

EP - 415

JO - Jornal of Membrane Science

JF - Jornal of Membrane Science

SN - 0376-7388

IS - 1-2

ER -