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Journal of Materials Science

, Volume 42, Issue 11, pp 3894–3900 | Cite as

Processing of sucrose to low density carbon foams

  • K. PrabhakaranEmail author
  • P. K. Singh
  • N. M. Gokhale
  • S. C. Sharma
Article

Abstract

A novel process for preparation low density carbon foams from sucrose has been demonstrated. A resin prepared by heating aqueous acidic sucrose solution when heated in an open Teflon mould at 120 °C undergoes foaming and then setting in to a solid organic foam. The solid organic foam undergoes carbonization in air by dehydration at 250 °C under isothermal condition. Carbon foams thus obtained sintered at temperature in the range 600–1,400 °C showed density in the range 115–145 mg/cc and electrical conductivity in the range 1.5 × 10−5 to 0.2 ohm−1 cm−1, respectively. The carbon foams contain spherical cells of size in the range 450–850 μm and the cells are interconnected through circular or oval shape windows of size in the range 80–300 μm. The carbon foam samples sintered at 1,400 °C showed compressive strength of 0.89 MPa.

Keywords

Foam Compressive Strength Gluconic Acid Phenol Formaldehyde Foam Sample 

Notes

Acknowledgements

The authors thank Dr. J. Narayana Das, Director, Naval Materials Research Laboratory for his support and keen interest in this work.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • K. Prabhakaran
    • 1
    Email author
  • P. K. Singh
    • 1
  • N. M. Gokhale
    • 1
  • S. C. Sharma
    • 1
  1. 1.Naval Materials Research LaboratoryThaneIndia

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