Fabrication and Characterization of PVDF Film for Sensor Applications
Suprapto1*, Ari Handoko2, Safri Gunawan3, Sapitri Januariyansah4, Rudi Salman5, Jubaidah6

1 Teknik Mesin, Fakultas Teknik, Universitas Negeri Medan, Indonesia
*supraptomeunimed[at]gmail.com
2 Teknik Mesin, Fakultas Teknik, STT. Sinar Husni, Indonesia
3 Pendidikan Teknik Otomotif, Fakultas Teknik, Universitas Negeri Medan, Indonesia
4 Pendidikan Teknik Mesin, Fakultas Teknik, Universitas Negeri Medan, Indonesia
5 Pendidikan Teknik Elektro, Fakultas Teknik, Universitas Negeri Medan, Indonesia
6 Pendidikan Fisika, FMIPA, Universitas Negeri Medan, Indonesia

Abstract

PVDF as smart material has been widely used for the miscellaneous application fields, such as sensor and actuator, energy harvesting, and medical devices due to the merits of flexibility, light weight, high sensitivity, and so on. How to improve the content of \beta phase on the polymer is always of great concern and becomes an attractive and imperative research subject recently. In this article, instead of using the above methods, PVDF thin film is fabricated by use of mixed mechanical and chemical processes with appropriate percentage of solvents under certain operating conditions. The characteristics of PVDF phase transformation behavior were measured by FTIR and XRD to obtain the \beta phase fraction and the degree of crystallinity. The surface morphology, roughness, and microstructure change of PVDF composites were examined by AFM. The PVDF composite thin film was deposited by silver ink as electrode for conducting in both sides. From experimental results, a conclusion can be drawn that with the addition of Ionic Liquid on the solution of PVDF and DMF in association with suitable operating conditions, PVDF thin film can be built with satisfactory fraction of \beta phase and degree of crystallinity as well as piezoelectricity

Keywords: PVDF film, Ionic Liquid, piezoelectric, crystallinity, force sensor

Topic: Applied Sciences and Information Technology