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Journal of Materials Science

, Volume 27, Issue 16, pp 4341–4349 | Cite as

Imaging aerogels at the molecular level

  • G. C. Ruben
  • R. W. Pekala
  • T. M. Tillotson
  • L. W. Hrubesh
Papers

Abstract

Aerogels are a special class of open-cell foams that have an ultrafine cell/pore size (<50 nm), high surface area (400–1000 m2 g−1), and an ultrastructure composed of interconnected colloidal-like particles or polymeric chains with characteristic dimensions of 10 nm. The purpose of this paper is to directly image a series of resorcinol-formaldehyde (RF) and silica aerogels by high resolution transmission electron microscopy (HRTEM). A new vertical replication technique allows us to examine aerogels at the molecular level in situ so that differences in polymeric and colloidal aerogels can be visualized. Such information is crucial for nano-engineering the structure and properties of these novel materials.

Keywords

Polymer Microscopy Electron Microscopy Transmission Electron Microscopy Foam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • G. C. Ruben
    • 1
  • R. W. Pekala
    • 2
  • T. M. Tillotson
    • 2
  • L. W. Hrubesh
    • 2
  1. 1.Department of Biological SciencesDartmouth CollegeHanoverUSA
  2. 2.Chemistry and Materials Science DepartmentLawrence Livermore National LaboratoryLivermoreUSA

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