Skip to main content
SpringerLink
Log in

Development of a novel moisture sensor based on superabsorbent poly(acrylamide)-montmorillonite composite hydrogels

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

The time dependence of water vapour absorption by superabsorbent polymer clay composite (SAPC) hydrogels was studied using thermophysical methods. For the purpose of comparison the average value of the specific interaction enthalpy of liquid water with the SAPC structure was calorimetrically determined for a defined interaction time. Dynamic vapour absorption measurements confirmed that the SAPC material has a sufficiently high absorption capacity and good selectivity for water vapour. A prototype moisture sensor with excellent reproducibility of the output voltage signal was constructed by coating a silicon integrated thermotransducer with a thin SAPC membrane.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. T. Tanaka, Science 218 (1982) 467.

    Google Scholar 

  2. B. R. Eggins, “Biosensors: An introduction” (Wiley, 1997), Chichester, New York.

  3. Y. Osada and S. B. Ross-Murphy, Scientific American 268 (1993) 82.

    Google Scholar 

  4. D. Gao and R. B. Heimann, Polymer Gels and Networks 1 (1993) 225.

    Google Scholar 

  5. D. Gao, R. B. Heimann and S. D. B. Alexander, Adv. Cement Res. 9(35) (1997) 93.

    Google Scholar 

  6. D. Gao, R. B. Heimann, M. C. Williams, L. T. Wardhaugh and M. Muhammad, J. Mater. Sci. 34(7) (1999) 1543.

    Google Scholar 

  7. D. Gao and R. B. Heimann, “Structural Characterization of Superabsorbent Poly(acrylamide)/Montmorillonite Composite,” to be published.

  8. (a) W. Hemminger and G. HÖhne, “Calorimetry: Fundamentals and Practice” (Verlag Chemie, Weinheim, 1984); (b) C. G ¨UNTER, R. PFESTORF, M. ROTHER, J. SEIDEL, R. ZIMMERMANN, G. WOLF and V. SCHR ¨ODER, J. Thermal Anal. 33 (1988) 359.

    Google Scholar 

  9. M. Bakass, A. Mohnklisse, M. Ben Chanaa and M. Lallemant, Thermochimica Acta. 206(1) (1992) 309.

    Google Scholar 

  10. D. Gao and R. B. Heimann, “Preparation Method of SAPC Membranes,” to be published.

  11. J. Lerchner, J. Seidel, G. Wolf and E. Weber, Sensors and Actuators B 32 (1996) 71.

    Google Scholar 

  12. J. Lerchner, D. Caspary and G. Wolf, Sensors and Actuators B70 (2000) 57.

    Google Scholar 

  13. K. D. Schierbaum, A. Gerlach, M. Haug and W. GÖpel, Sensors and Actuators A 31 (1992) 130.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mineralogy, Chair of Technical Mineralogy, Freiberg University of Mining and Technology, D-09596, Freiberg, Germany

    Deyu Gao & R. B. Heimann

  2. Department of Physical Chemistry, Freiberg University of Mining and Technology, D-09596, Freiberg, Germany

    J. Lerchner, J. Seidel & G. Wolf

Authors
  1. Deyu Gao
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. B. Heimann
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Lerchner
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J. Seidel
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. G. Wolf
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to R. B. Heimann.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gao, D., Heimann, R.B., Lerchner, J. et al. Development of a novel moisture sensor based on superabsorbent poly(acrylamide)-montmorillonite composite hydrogels. Journal of Materials Science 36, 4567–4571 (2001). https://doi.org/10.1023/A:1017971811942

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1017971811942

Keywords

Search

Navigation