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Proceeding Paper

Moisture-Responsive Polymer Films on Flexible Substrates for Optical Sensing of Humidity

1
Institute of Optical Materials and Technologies ‘‘Acad. J. Malinowski’’, Bulgarian Academy of Sciences, Akad. G. Bonchev str., bl. 109, 1113 Sofia, Bulgaria
2
Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., bl. 103-A, 1113 Sofia, Bulgaria
*
Authors to whom correspondence should be addressed.
Presented at the 7th International Electronic Conference on Sensors and Applications, 15–30 November 2020; Available online: https://ecsa-7.sciforum.net/.
Eng. Proc. 2020, 2(1), 19; https://doi.org/10.3390/ecsa-7-08182
Published: 14 November 2020
(This article belongs to the Proceedings of 7th International Electronic Conference on Sensors and Applications)
In this paper, the possibility to design flexible humidity sensors by spin-coating of
moisture-sensitive polymer on three types of substrates—poly(ethylene terephthalate) (PET),
polylactide (PLA) and composite polysiloxane is investigated. The optical properties, surface
morphology and roughness of the substrates covered with polymer are studied by transmittance
measurements and surface profiling, respectively. Thin polymer films of amphiphilic copolymer
obtained by partial acetalization of poly(vinyl alcohol) are used as humidity sensitive media. The
sensing properties are probed through transmittance measurements at different levels of relative
humidity (RH). The influence of substrate type is studied by comparing the hysteresis of flexible
sensors with those that are deposited on glass substrates.
MDPI and ACS Style

Lazarova, K.; Bozhilova, S.; Ivanova, S.; Christova, D.; Babeva, T. Moisture-Responsive Polymer Films on Flexible Substrates for Optical Sensing of Humidity. Eng. Proc. 2020, 2, 19. https://doi.org/10.3390/ecsa-7-08182

AMA Style

Lazarova K, Bozhilova S, Ivanova S, Christova D, Babeva T. Moisture-Responsive Polymer Films on Flexible Substrates for Optical Sensing of Humidity. Engineering Proceedings. 2020; 2(1):19. https://doi.org/10.3390/ecsa-7-08182

Chicago/Turabian Style

Lazarova, Katerina, Silvia Bozhilova, Sijka Ivanova, Darinka Christova, and Tsvetanka Babeva. 2020. "Moisture-Responsive Polymer Films on Flexible Substrates for Optical Sensing of Humidity" Engineering Proceedings 2, no. 1: 19. https://doi.org/10.3390/ecsa-7-08182

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