Naslov
Development of new generation of stretchable conductive polymers for wearable flexible electronics

Autori
Fiket, Lucija ; Božičević, Marin ; Horvat, Anamarija ; Katančić, Zvonimir

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

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers, Book of abstracts / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 187-187

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
Međunarodna recenzija

Ključne riječi
Conductive polymers ; Flexible electronics ; Inkjet printing

Sažetak
Conductive polymers are used as an alternative to conventional materials because of their properties such as electrical conductivity, light weight, and stability. However, their major drawback is their poor mechanical properties, i.e., brittleness, which makes them unsuitable for use in flexible electronics without modification. To improve their mechanical properties, one approach is to introduce chemical species that promote non-covalent dynamic crosslinking in the main chain of the conductive polymer. In this study, the conductive polymer poly(3, 4-ethylenedioxythiophene) (PEDOT) was used as the main chain and the side branches of poly(acrylate-urethane) (PAU) were grafted onto it to obtain the grafted copolymer PEDOT-g-PAU. In this way, the main chain of PEDOT retains the property of electrical conductivity without losing conjugation, while the side branches of PAU have the ability to crosslink non-covalently through hydrogen bonds with PAU side branches of neighboring polymer molecules. The presence of hydrogen bonds improves the stretchability and flexibility of the material, and they also have the ability to spontaneously renew after breaking. The obtained graft copolymer PEDOT-g-PAU was prepared in the form of conductive ink and printed by inkjet technology on a polyurethane substrate (PU), which is widely used in flexible electronics. The conductivity of the printed layer, its elongation and adhesion were investigated, and possible delamination of the printed polymer layer was also monitored. The results showed that the desired product PEDOT-g-PAU copolymer was successfully synthesized and inkjet printing on PU film was successful. The electrical and mechanical properties of the printed material were investigated and found to be suitable for use in flexible electronics.

Izvorni jezik
Engleski

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