Development of a novel moisture sensor based on superabsorbent poly(acrylamide)-montmorillonite composite hydrogels
Source abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Fiber Optic Sensors · Advanced Sensor and Energy Harvesting Materials · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. T. Tanaka, Science 218 (1982) 467.10.1126/science.218.4571.467 ↗
2. B. R. Eggins, “Biosensors: An introduction” (Wiley, 1997), Chichester, New York.10.1007/978-3-663-05664-5 ↗
3. Y. Osada and S. B. Ross-Murphy, Scientific American 268 (1993) 82.10.1038/scientificamerican0593-82 ↗
4. D. Gao and R. B. Heimann, Polymer Gels and Networks 1 (1993) 225.10.1016/0966-7822(93)90002-Y ↗
5. D. Gao, R. B. Heimann and S. D. B. Alexander, Adv. Cement Res. 9(35) (1997) 93.10.1680/adcr.1997.9.35.93 ↗
6. D. Gao, R. B. Heimann, M. C. Williams, L. T. Wardhaugh and M. Muhammad, J. Mater. Sci. 34(7) (1999) 1543.10.1023/A:1004516330255 ↗
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.
9. M. Bakass, A. Mohnklisse, M. Ben Chanaa and M. Lallemant, Thermochimica Acta. 206(1) (1992) 309.10.1016/0040-6031(92)85308-I ↗
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) 71.10.1016/0925-4005(96)80111-0 ↗
12. J. Lerchner, D. Caspary and G. Wolf, Sensors and Actuators B70 (2000) 57.10.1016/S0925-4005(00)00554-2 ↗
13. K. D. Schierbaum, A. Gerlach, M. Haug and W. GÖpel, Sensors and Actuators A 31 (1992) 130.10.1016/0924-4247(92)80092-H ↗