A high-flux. Flexible membrane with parylene-encapsulated carbon nanotubes

H. G. Park, J. In, S. Kim, F. Fornasiero, J. K. Holt, C. P. Grigoropoulos, Aleksandr Noy, O. Bakajin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present fabrication and characterization of a membrane based on carbon nanotubes (CNTs) and parylene. Carbon nanotubes have shown orders of magnitude enhancement in gas and water permeability compared to estimates generated by conventional theories [1, 2]. Large area membranes that exhibit flux enhancement characteristics of carbon nanotubes may provide an economical solution to a variety of technologies including water desalination [3] and gas sequestration [4]. We report a novel method of making carbon nanotube-based, robust membranes with large areas. A vertically aligned dense carbon nanotube array is infiltrated with parylene. Parylene polymer creates a pinhole free transparent film by exhibiting high surface conformity and excellent crevice penetration. Using this moisture-, chemical- and solventresistant polymer creates carbon nanotube membranes that promise to exhibit high stability and biocompatibility. CNT membranes are formed by releasing a free-standing film that consists of parylene-infiltrated CNTs, followed by CNT uncapping on both sides of the composite material. Thus fabricated membranes show flexibility and ductility due to the parylene matrix material. These membranes have a potential for applications that may require high flux, flexibility and durability.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
Pages43-46
Number of pages4
Volume1
StatePublished - 2008
Externally publishedYes
Event2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008 - Quebec City, QC, United States
Duration: Jun 1 2008Jun 5 2008

Other

Other2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
CountryUnited States
CityQuebec City, QC
Period6/1/086/5/08

Keywords

  • Carbon nanotube
  • High-flux
  • Membrane
  • Parylene

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Park, H. G., In, J., Kim, S., Fornasiero, F., Holt, J. K., Grigoropoulos, C. P., Noy, A., & Bakajin, O. (2008). A high-flux. Flexible membrane with parylene-encapsulated carbon nanotubes. In Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008 (Vol. 1, pp. 43-46)