Effects Of Plasma and Ozone Treatments on Tensile and Whiteness Properties Of 100% Silk

Öz

In this study raw and degummed silk fabrics are treated with low frequency oxygen plasma and ozone in order to investigate the effects on the physical properties of silk. Plasma and ozone treatments are performed individually and in combined order for 5, 10 and 15 min. The yellowness and whiteness values are determined after the plasma and ozone treatments. The tensile strengths of treated and untreated silk fabrics are measured. The SEM images of the surfaces of silk fabrics are investigated and the combined effect of ozone and plasma treatments are discussed after each test. Results indicate that there is more significant decrease in ozone treatment, considering decrease in whiteness indexes and increase in yellowness values of silk fabrics when compared to the plasma treatment. Generally, when the treatment time of plasma or ozone is increased, increase of yellowness and decrease of whiteness become clear.

Anahtar Kelimeler

• Low-frequency plasma; ozone; silk

%100 İpek Kumaşın Mukavemet ve Beyazlık Özellikleri Üzerine Plazma ve Ozon İşlemlerinin Etkileri

Öz

Bu çalışmada, plazma ve ozonun ipek kumaşın fiziksel özellikleri üzerindeki etkisini araştırmak amacıyla ham ve serisini giderilmiş ipek kumaşlar ozon ve düşük frekanslı oksijen plazma işlemlerine tabi tutulmuştur. Plazma ve ozon işlemleri birbirlerinden bağımsız olarak ve kombine olacak şekilde 5, 10 ve 15 dak. uygulanmıştır. Plazma ve ozon işlemlerinden sonra, sarılık ve beyazlık indeksleri belirlenmiş, kopma mukavemetleri ölçülmüştür. İpek kumaşların yüzeylerinin SEM görüntüleri incelenmiş ve her test ardından ozon ve plazmanın kombine efekti tartışılmıştır. Ozon ve plazma işlemleri karşılaştırıldığında, sonuçlar ipek kumaşların beyazlık indekslerinde azalışın, sarılık değerlerindeki artışın ozonlama işleminde daha belirgin olduğunu ortaya çıkarmıştır. Genel olarak, plazma veya ozonun işlem süreleri arttıkça sarılıktaki artış ve beyazlıktaki azalış daha net bir şekilde görülmektedir.

Anahtar Kelimeler

• Düşük frekanslı plazma; ozon; ipek

Kaynakça

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