Enhancing the Response of Chemocapacitors with Electrospun Nanofiber Films

Rui Igreja; H. Domingos; João Paulo Borges; C.J. Dias

doi:10.4028/www.scientific.net/MSF.730-732.197

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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Enhancing the Response of Chemocapacitors with...

Enhancing the Response of Chemocapacitors with Electrospun Nanofiber Films

Abstract:

Chemocapacitors are polymer coated Interdigital electrodes (IDE) where the transducer mechanism relies on the permittivity changes and swelling of the coating polymer (sensitive layer), usually in a form of a thin film, when exposed to an volatile organic compound (VOC). Despite several synthetic and natural polymers have already been produced by electrospinning, there have been fewer studies on rubbery polymers with low glass transition temperature (e.g. Poly(dimethyl siloxane) – PDMS). In this work we produce PDMS:PMMA 3:1 nanofiber (NF) layers by electrospinnig to be used as chemical sensitive layers on IDE chemocapacitors. The results show an enhanced response from the sensors with NFs with respect with sensors prepared with the same sensitive layers in the form of a homogeneous film.

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Materials Science Forum (Volumes 730-732)

Pages:

197-202

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.197

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Online since:

November 2012

Authors:

Rui Igreja, H. Domingos, João Paulo Borges, C.J. Dias

Keywords:

Chemical Sensors, Electro-Spinning, Nanofiber, PDMS, PMMA

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References

[1] Igreja, R. and C. J. Dias. Analytical evaluation of the interdigital electrodes capacitance for a multi-layered structure. Sensors and Actuators a-Physical, 2004, 112(2-3): pp.291-301.

DOI: 10.1016/j.sna.2004.01.040

Google Scholar

[2] Igreja, R. and C. J. Dias. Dielectric response of interdigital chemocapacitors: The role of the sensitive layer thickness. Sensors and Actuators B-Chemical, 2006, 115(1): pp.69-78.

DOI: 10.1016/j.snb.2005.08.019

Google Scholar

[3] Ding, B., M. R. Wang, X. F. Wang, J. Y. Yu and G. Sun. Electrospun nanomaterials for ultrasensitive sensors. Materials Today, 13(11): pp.16-27.

DOI: 10.1016/s1369-7021(10)70200-5

Google Scholar

[4] Igreja, R. and C. J. Dias. Capacitance response of polysiloxane films with interdigital electrodes to volatile organic compounds. Advanced Materials Forum Ii, 2004, 455-456: pp.420-424.

DOI: 10.4028/www.scientific.net/msf.455-456.420

Google Scholar

[5] Kitsara, M., D. Goustouridis, S. Chatzandroulis, M. Chatzichristidi, I. Raptis, T. Ganetsos, R. Igreja and C. J. Dias. Single chip interdigitated electrode capacitive chemical sensor arrays. Sensors and Actuators B-Chemical, 2007, 127(1): pp.186-192.

DOI: 10.1016/j.snb.2007.07.021

Google Scholar

[6] Hierlemann, A., A. J. Ricco, K. Bodenhofer, A. Dominik and W. Gopel. Conferring selectivity to chemical sensors via polymer side-chain selection: Thermodynamics of vapor sorption by a set of polysiloxanes on thickness-shear mode resonators. Analytical Chemistry, 2000, 72(16): pp.3696-3708.

DOI: 10.1021/ac991298i

Google Scholar

[7] Yang, D. Y., X. Liu, Y. Jin, Y. Zhu, D. D. Zeng, X. Y. Jiang and H. W. Ma. Electrospinning of Poly(dimethylsiloxane)/Poly(methyl methacrylate) Nanofibrous Membrane: Fabrication and Application in Protein Microarrays. Biomacromolecules, 2009, 10(12): pp.3335-3340.

DOI: 10.1021/bm900955p

Google Scholar