İndirgenmiş Grafen Oksit ile Kaplanan Pamuk Kumaşın Elektriksel İletkenlik ve Haslık Özelliklerinin İncelenmesi

Year 2021, , 39 - 46, 30.01.2021

B. Cenkkut Gültekin

https://doi.org/10.7240/jeps.688586

Abstract

Bu çalışmada, %100 grafen oksit içeren pat hazırlanarak rakle kaplama makinasında pamuk kumaş üzerine kaplama işlemi gerçekleştirildi. Bu amaçla, grafit partiküllerden kimyasal oksidasyon yöntemiyle grafen oksit sentezlendi. Herhangi bir yardımcı kimyasal kullanılmadan hazırlanan %100 grafen oksitten oluşan hidrosol ile kaplama işleminin ardından grafen oksitin elektriksel olarak iletken yapıya dönüşmesi amacıyla C vitamini ile indirgeme işlemi uygulandı. Grafen oksit ve indirgenmiş grafen oksit kaplanmış kumaşın karakterizasyonu Fourier dönüşümlü kızılötesi spektroskopisi (FTIR) ile gerçekleştirildi ve yüzey özellikleri taramalı elektron mikroskobu (SEM) ile incelendi. Elektriksel direnç, dört nokta prob tekniği ile ölçüldü. Yıkama ve sürtme haslık testleri gerçekleştirilerek indirgenmiş grafen oksit kaplı kumaşın elektriksel direnç dayanımı belirlendi. Buna göre, grafen oksit kaplanan pamuk kumaşta elektriksel direnç 4.46E+06 Ω/□ olarak elde edildi ve C vitamini ile indirgeme işlemi sonrası elektriksel direnç 2.56E+02 Ω/□ olarak ölçüldü. Yıkama sonrasında elektriksel direnç değerinde kaydadeğer bir değişim olmadığı ancak haslık testleri sonrasında bir miktar artış olduğu gözlendi. Ayrıca, indirgenmiş grafen oksit kaplı pamuk kumaşın elektromanyetik kalkanlama etkinliği de incelendi ve kumaşın katlanmasıyla kalkanlama etkinliğinin arttığı görüldü.

Keywords

grafen oksit, kaplama, elektriksel iletkenlik, indirgeme, pamuk kumaş

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