Alkali Hidroliz İşleminin İndirgenmiş Grafen Oksit Kaplı Polyester Örme Kumaşın Fiziksel ve Elektriksel Özelliklerine Etkisi

Year 2024, EARLY VIEW, 1 - 1

Nergis Demirel Gültekin

https://doi.org/10.2339/politeknik.1309440

Abstract

Bu çalışmada, alkali hidroliz işlemi ile yüzey modifikasyonu uygulanan poliester atkılı örme kumaşın grafen oksit ile kaplanması ve indirgenmesi incelenmiştir. Bu kapsamda, poliester örme kumaş öncelikle sodyum hidroksit çözeltisi ile işlem görerek kumaşta yüzey pürüzlülüğü elde edilmiştir. Ardından, işlem görmemiş ve sodyum hidroksit ile işlem görmüş kumaşlar grafen oksit suu dispersiyonu ile daldırma yöntemiyle kaplanmış ve sonrasında doğal bir indirgeme maddesi olan L-askorbik asit (C Vitamini) ile indirgenme işlemine tabi tutulmuştur. Her bir işlemden sonra kumaştaki ağırlık değişimi hesaplanmıştır. Poliester örme kumaşın fiziksel özellikleri, alkali hidroliz uygulanmış ve uygulanmamış numunelerde grafen oksit kaplama ve indirgeme işlemleri öncesi ve sonrasında aşınma dayanımı ve patlama mukavemeti ile belirlenmiştir. Taramalı elektron mikroskopu ve Fourier dönüşümlü kızılötesi spektroskopisi kumaş numunelerinin yüzey ve kimyasal yapısının incelenmesinde kullanılmıştır. Kumaş numunelerinin elektriksel yüzey ve hacim direnci bir kaynakmetre ve direnç test fikstüründen oluşan düzenek ile test edilmiştir.

Keywords

Alkali hidroliz, polyester kumaş, grafen oksit, kaplama, askorbik asit ile indirgeme

Effect of Alkaline Hydrolysis Process on The Physical and Electrical Properties of Reduced Graphene Oxide Coated Polyester Knitted Fabric

Abstract

In this research, the influence of surface treatment of polyester weft knitted fabric via alkaline hydrolysis on graphene oxide coating and reduction process is analyzed. In this regard, sodium hydroxide solution was prepared and the chemical etching of polyester fabric was carried out to create surface roughening effect. Then, untreated and sodium hydroxide-treated fabrics were dip-coated with graphene oxide aqueous dispersion followed by a reduction process with L-ascorbic acid (Vitamin C) known as green reductant. The weight changes after each treatment were calculated. The changes in surface morphology and chemical structure of fabric samples were examined. The electrical resistivity of the fabric samples was tested using a setup consisting of a sourcemeter and resistivity test fixture. The physical properties of polyester knitted fabric were determined by means of abrasion resistance and bursting strength before and after alkaline hydrolysis, graphene oxide coating, and reducing processes.

Keywords

Alkaline hydrolysis, polyester fabric, graphene oxide, dip coating, ascorbic acid reduction

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