Barrier membranes with different sizes of aligned flakes

Jonathan P. DeRocher; Brian T. Gettelfinger; Junshan Wang; Eric E. Nuxoll; Edward L Cussler Jr

doi:10.1016/j.memsci.2004.12.025

Barrier membranes with different sizes of aligned flakes

Jonathan P. DeRocher, Brian T. Gettelfinger, Junshan Wang, Eric E. Nuxoll, Edward L Cussler Jr

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

103 Scopus citations

Abstract

The permeability of polymer films can be reduced dramatically with many layers of thin mineral flakes aligned parallel to the film's surface. For a film with a volume fraction φ of flakes of aspect ratio α, the permeability reduction is expected to be proportional to αφ for the dilute limit (φ ≪ 1 and αφ < 1) but proportional to (αφ)² in the semi-dilute limit (φ ≪ 1 but αφ > 1). Permeabilities of hydrochloric acid and sodium hydroxide across films containing mica or vermiculite in polyvinyl alcohol agree with the second, semi-dilute prediction. Permeabilities of helium across films of montmorillonite in polyethylene glycol do as well. These improvements in barrier properties are independent of flake size, permeant and polymer chemistry.

Original language	English (US)
Pages (from-to)	21-30
Number of pages	10
Journal	Journal of Membrane Science
Volume	254
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2004.12.025
State	Published - Jun 1 2005

Bibliographical note

Funding Information:
This work was largely supported by the Air Force Office of Scientific Research (grant F49620-01-1-0333). Other support came from the Department of Energy (grant DE-FG07-02ER63509), the Petroleum Research Fund (grant 39083-AC9), and the National Science Foundation (grant CTS 0322882).

Keywords

Flake
Permeability
Polyvinyl alcohol

Access

10.1016/j.memsci.2004.12.025

OpenUrl availability

Full text

Cite this

@article{06fa711415ed40ee905871d05b627686,

title = "Barrier membranes with different sizes of aligned flakes",

abstract = "The permeability of polymer films can be reduced dramatically with many layers of thin mineral flakes aligned parallel to the film's surface. For a film with a volume fraction φ of flakes of aspect ratio α, the permeability reduction is expected to be proportional to αφ for the dilute limit (φ ≪ 1 and αφ < 1) but proportional to (αφ)2 in the semi-dilute limit (φ ≪ 1 but αφ > 1). Permeabilities of hydrochloric acid and sodium hydroxide across films containing mica or vermiculite in polyvinyl alcohol agree with the second, semi-dilute prediction. Permeabilities of helium across films of montmorillonite in polyethylene glycol do as well. These improvements in barrier properties are independent of flake size, permeant and polymer chemistry.",

keywords = "Flake, Permeability, Polyvinyl alcohol",

author = "DeRocher, {Jonathan P.} and Gettelfinger, {Brian T.} and Junshan Wang and Nuxoll, {Eric E.} and {Cussler Jr}, {Edward L}",

note = "Funding Information: This work was largely supported by the Air Force Office of Scientific Research (grant F49620-01-1-0333). Other support came from the Department of Energy (grant DE-FG07-02ER63509), the Petroleum Research Fund (grant 39083-AC9), and the National Science Foundation (grant CTS 0322882).",

year = "2005",

month = jun,

day = "1",

doi = "10.1016/j.memsci.2004.12.025",

language = "English (US)",

volume = "254",

pages = "21--30",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Barrier membranes with different sizes of aligned flakes

AU - DeRocher, Jonathan P.

AU - Gettelfinger, Brian T.

AU - Wang, Junshan

AU - Nuxoll, Eric E.

AU - Cussler Jr, Edward L

N1 - Funding Information: This work was largely supported by the Air Force Office of Scientific Research (grant F49620-01-1-0333). Other support came from the Department of Energy (grant DE-FG07-02ER63509), the Petroleum Research Fund (grant 39083-AC9), and the National Science Foundation (grant CTS 0322882).

PY - 2005/6/1

Y1 - 2005/6/1

N2 - The permeability of polymer films can be reduced dramatically with many layers of thin mineral flakes aligned parallel to the film's surface. For a film with a volume fraction φ of flakes of aspect ratio α, the permeability reduction is expected to be proportional to αφ for the dilute limit (φ ≪ 1 and αφ < 1) but proportional to (αφ)2 in the semi-dilute limit (φ ≪ 1 but αφ > 1). Permeabilities of hydrochloric acid and sodium hydroxide across films containing mica or vermiculite in polyvinyl alcohol agree with the second, semi-dilute prediction. Permeabilities of helium across films of montmorillonite in polyethylene glycol do as well. These improvements in barrier properties are independent of flake size, permeant and polymer chemistry.

AB - The permeability of polymer films can be reduced dramatically with many layers of thin mineral flakes aligned parallel to the film's surface. For a film with a volume fraction φ of flakes of aspect ratio α, the permeability reduction is expected to be proportional to αφ for the dilute limit (φ ≪ 1 and αφ < 1) but proportional to (αφ)2 in the semi-dilute limit (φ ≪ 1 but αφ > 1). Permeabilities of hydrochloric acid and sodium hydroxide across films containing mica or vermiculite in polyvinyl alcohol agree with the second, semi-dilute prediction. Permeabilities of helium across films of montmorillonite in polyethylene glycol do as well. These improvements in barrier properties are independent of flake size, permeant and polymer chemistry.

KW - Flake

KW - Permeability

KW - Polyvinyl alcohol

UR - http://www.scopus.com/inward/record.url?scp=18844421876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18844421876&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2004.12.025

DO - 10.1016/j.memsci.2004.12.025

M3 - Article

AN - SCOPUS:18844421876

SN - 0376-7388

VL - 254

SP - 21

EP - 30

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Barrier membranes with different sizes of aligned flakes

Abstract

Bibliographical note

Keywords

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this