Naslov
PREPARATION AND CHARACTERIZATION OF LITMUS BASED SENSOR FILMS

Autori
Marković, Marijan-Pere ; Bambić, Leonarda ; Cingesar, Ivan Karlo ; Forjan, Elizabeta ; Vrsaljko, Domagoj

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers – Book of abstracts / - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 161-161

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Recenziran

Ključne riječi
Additive manufacturing ; sensor film ; sol-gel ; litmus

Sažetak
The objective of this work was to prepare a functional, litmus-based, pH responsive sensor film and use it to coat the 3D printed polyethylene terephthalate glycol-modified (PETG) test plates. The sol-gel method was used to prepare the sensor film. The main goal was to obtain a functional pH sensor film that would exhibit a clear response in real time. For the sol-gel method, tetraethoxysilane (TEOS) and phenyltrimethoxysilane (FTMS) were used as precursors with water as solvent, the reaction was acid catalyzed with hydrochloric acid, litmus was used as pH indicator and titanium dioxide (TiO2) was added to enhance the color intensity. In order to be used in 3D printed millireactor channels in future research, the prepared sensor films were tested on 3D printed test plates. The test plates were fabricated using fused filament fabrication (FFF) 3D printing technology. The working range of the immobilized films was tested in acidic and basic solutions with a variation of 1 pH unit. The test plates with the applied films were examined with a scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR), and the contact angle was inspected with a goniometer. Tests in pH solutions showed the functionality of the sensor films via color change (Fig. 1) after 10 minutes.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

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