Investigation of Electrical and Optical Properties of Chitosan Films Containing Different Carbon Fillers

Year 2023, Volume: 27 Issue: 3, 485 - 494, 25.12.2023

Ömer Bahadır Mergen

Abstract

In this study, the changes in the electrical and optical properties of thin
films obtained by adding carbon fillers (CFs) such as graphene oxide (GO), carbon
mesoporous (CM), graphene nanoplatelet (GNP) and multi-walled carbon nanotube
(MWCNT) into the chitosan (CS) matrix were investigated. Solution mixing,
ultrasonic mixing and spin coating techniques were used to prepare the films.
Significant improvements were observed in the electrical and optical properties of
CS/CF bio-composite thin films. In addition, a comparison was made between these
CFs and it was observed that MWCNT was more effective than others in increasing
physical properties. Obtained electrical and optical results show that CS/CF biocomposite films can be used in sustainable and temporary optoelectronics, photon
energy applications, biomedicine and biosensor applications.

Keywords

Chitosan bio-composite film, Tauc method, ASF method, Urbach energy, Refractive index, Optical conductivity

Project Number

2021/91

Farklı Karbon Dolgular İçeren Kitosan Filmlerin Elektrik ve Optik Özelliklerinin İncelenmesi

Abstract

Bu çalışmada Kitosan (CS) matris içerisine grafen oksit (GO), gözenekli karbon
(CM), grafen nanoplatelet (GNP) ve çok duvarlı karbon nanotüp (MWCNT) gibi
karbon dolgular (KD’lar) eklenerek elde edilen ince filmlerin elektrik ve optik
özelliklerindeki değişimler incelenmiştir. Filmleri hazırlamak için çözelti
karıştırma, ultrasonik karıştırma ve döndürerek kaplama teknikleri kullanılmıştır.
CS/KD ince filmlerin elektrik ve optik özelliklerinde önemli ölçüde iyileşmeler
sağlandığı görülmüştür. Ayrıca bu KD’lar arsında bir kıyaslama yapılmış ve fiziksel
özellikleri arttırmada MWCNT’ün diğer KD’lara göre daha etkili olduğu
gözlemlenmiştir. Elde edilen elektriksel ve optik sonuçlar, CS/KD biyokompozitlerin sürdürülebilir ve geçici optoelektronik, foton enerjisi uygulamaları,
biyotıp ve biyosensör uygulamalarında kullanılabileceğini göstermektedir.

Keywords

Kitosan biyo-kompozit film, Tauc yöntemi, ASF yöntemi, Urbach enerjisi, Kırılma indisi, Optik iletkenlik

Supporting Institution

Trakya Üniversitesi

Project Number

2021/91

Thanks

Bu çalışma Trakya Üniversitesi Bilimsel Araştırma Projeleri birimi (Proje No: TUBAP 2021/91) tarafından desteklenmiştir.

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