Augustin MUREŞAN, Rodica MUREŞAN, Carmen LOGHIN, Angela CEREMPEI, Mariana URSACHE

Investigation on the effects of antibacterial finishes on dyed cotton knitted fabrics

Bu araştırmanın temel amacı boyalı pamuklu örme kumaşlarda antibakteriyel ve antifungal etkilerin sağlanmasıdır. Antibakteriyel özelliklere ilave olarak, boyalı kumaşlara yapılan antibakteriyel bitim işleminin diğer etkileri de incelenmiştir. Bu etkiler life bağlanan metal miktarı, renkle ilgili parametreler ve hastalıklardır. Bitim işlemi sırasında, kumaşlar boyama hazırlık, kitosanla ön işlem, Direct Gren 26 boyası ile boyama gibi çeşitli işlemlerden geçmiştir. Antibakteriyel özelliklere sahip boyalı malzemelerin elde edilmesi amacıyla, (ZnSO4) çözeltileri ile işlem görmüştür. Bitim işlemleri sonrasında, kumaşların çeşitli bakteri (gram pozitif ve gram negatif) ve mantar gibi mikrobik organizmalara karşı testleri yapılmıştır. Antimikrobiyal aktiviteleri nedeniyle, bu araştırmada hem kitosan, hem de melat tuzları göz önünde alınmıştır. Kitosan, boyarmadde ve metal tuzları nedeniyle liflerde oluşan değişikliklerin belirlenmesi için FTIR-ATR tekniği kullanılmıştır.

Antibakteriyel bitim işlemlerinin boyalı pamuklu örme kumaşlara etkisinin araştırılması

The main objective of the research was to obtain antibacterial and antifungal effects in case of dyed cotton knitted fabrics. In addition to antibacterial properties, other effects of the antibacterial treatment on the dyed fabrics were investigated: the amount of metal bonded on fibre, the chromatic parameters, and the dye fastness. During the finishing process, the samples were subjected to several treatments, as: preparation for dyeing, pre-treatment with chitosan, dyeing with Direct Green 26 dye. In order to provide dyed materials with antibacterial properties, the samples have been treated, in different conditions, with different concentrations of silver nitrate (AgNO3) and zinc sulphate (ZnSO4) solutions. After the finishing process, the samples were tested against several microbial organisms: bacteria (gram positive and gram negative) and fungi. Due to their antimicrobial activity, both chitosan and metal salts have been taken into consideration in the research. Fourier transform infrared–attenuated total reflectance spectroscopy (FTIR-ATR) technique was used to study the fiber changes as a result of treatment with chitosan, dyeing stuff and metallic salts.

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