Investigation of the Effect of Citric Acid and TiO2 Nanoparticle Mixtures on Yellowing and Folding Angle of Wool Fabrics

Year 2023, , 705 - 711, 18.10.2023

Sabiha Sezgin Bozok , Tuğrul Oğulata

https://doi.org/10.21605/cukurovaumfd.1377729

Abstract

Citric acid (C6H8O7) is a kind of carboxylic acid that can be used as a crosslinker for textile surfaces, is environmentally friendly, is not harmful to human health, and has a low cost. Titanium dioxide (TiO2) nanoparticles, on the other hand, are white pigments that can provide many functional properties such as self-cleaning, UV blocking, etc. to the product on which it is applied with a large surface area. It has been seen in previous studies that citric acid provides benefits such as increasing the anti-crease properties of fabrics, but it also has a disadvantage such as yellowing the product as a result of applying this chemical to textile surfaces. In this study, suspensions of TiO2 NP (nanoparticle) were prepared for colorless woolen fabrics and mixed with citric acid at different concentrations. It was applied to woolen fabrics with the Pad-dry-cure method. By scanning electron microscopy (SEM) analysis, it was determined that citric acid doped with TiO2 suspension changed the fiber surface. Yellowing was observed in the woolen samples with citric acid, but when TiO2 NP was added to the solutions, the yellowing in the samples was considerably reduced. The folding angle of woolen samples treated with 15 gr/L citric acid could be increased by 4°, with TiO2 NP added to the citric acid solution at this concentration, the folding angle of the samples decreased but was higher than the untreated sample.

Keywords

Wool fabric, Titanium dioxide, Citric acid, Folding angle, Yellowing

Sitrik Asit ve TiO2 Nanoparçacık Karışımlarının Yünlü Kumaşların Sararma ve Katlanma Açısına Etkisinin İncelenmesi

Abstract

Sitrik asit (C6H8O7) tekstil yüzeyleri için çapraz bağlayıcı olarak kullanılabilen çevre dostu, insan sağlığına zararı olmayan, maliyeti düşük bir tür karboksilik asittir. Titanyum dioksit (TiO2) nanoparçacıklar (NP) ise geniş yüzey alanı ile uygulandığı ürüne kendi kendini temizleyebilme, UV bloklama, vs gibi birçok fonksiyonel özellik kazandırabilen beyaz renkte pigmenttir. Sitrik asitin kumaşlarda buruşmazlık özelliğini arttırması gibi fayda sağladığı önceki çalışmalarda görülmüştür ancak bu kimyasalın tekstil yüzeylerine uygulanması sonucunda ürünü sarartma gibi bir dezavantajı bulunmaktadır. Bu çalışmada renksiz yünlü kumaşlar için TiO2 NP süspansiyonları hazırlanmış ve farklı konsantrasyonlarda sitrik asitle karıştırılmıştır. Emdirme-kurutma-termofiksaj yöntemi ile kumaşlara aplike edilmiştir. Taramalı elektron mikroskobu (SEM) analizi ile TiO2 süspansiyonu katkılı sitrik asitin lif yüzeyini değiştirdiği tespit edilmiştir. Sitrik asitle yünlü numunelerde sararma görülmüş ancak çözeltilere TiO2 NP ilave edildiğinde numunelerdeki sararma oldukça azalmıştır. 15 gr/L sitrik asitle işlem gören yünlü numunelerin hem atkı hem çözgü yönünde katlanma açısı 4° arttırılabilmiştir, bu konsantrasyonda sitrik asit çözeltisine ilave edilen TiO2 NP ile numunelerin katlanma açısı düşmüş ancak işlem görmemiş numuneye göre yüksek çıkmıştır.

Keywords

Yünlü kumaş, Titanyum dioksit, Sitrik asit, Katlanma açısı, Sararma

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