Purpose – The purpose of this paper is to develop the flame retardancy properties of cotton fabrics with treatment of phosphorus and nitrogen containing silane-based nanosol by sol-gel process. Design/methodology/approach – Nanosols containing tetraethoxysilane or (3-aminopropyl) triethoxysilane as precursors, (3-glycidyloxypropyl) trimethoxysilane as cross-linking agent and guanidine phosphate monobasic as flame retarding agent were impregnated on cotton fabrics. Flame retardancy properties of the fabric samples were determined by limited flame spread test and limited oxygen index (LOI) test. In addition, microstructural and surface morphological properties of the fabric samples were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscope. Findings – Depending on the limited flame spread test, the authors show that the coated fabric samples gain flame retardancy properties and the LOI value of the samples increased as to 45.7 per cent by the synergistic effect of phosphorus-nitrogen-silicon. Originality/value – There have some studies in flame retardancy behaviour of textiles. In this study, flame retardant cotton fabric with very low weight in grams was improved by sol-gel process. Moreover, ecological process was provided thanks to using halogen-free flame retardant.
Hidrofobinler, birkaç nanometre çapında, yarısı hidrofil diğer yarısı hidrofob yapıda olan küresel proteinlerdir. Ayrıca lifli mantarların protein amfifilleri (hem hidrofil hem de hidrofob özellik taşıyan kimyasal bileşik) olarak da tanımlanırlar. Son zamanlarda hidrofobin kullanımı belirgin bir artış göstermekle birlikte tekstildeki uygulamaları henüz sınırlıdır. Moleküler yapıları ve kendi kendine birleşme mekanizmaları sayesinde çeşitli yüzey uygulamalarında kullanımları mümkün olup yapışma, yüzey modifikasyonu veya yüzey aktif benzeri özellikleri ile tekstil malzemeleri için uygundur. Özellikle tekstil yaş kimyasal işlemlerinde hidrofobinler, toksik olmayan çevre dostu bir malzeme olarak kullanım alanı bulmuştur. Bu amaçla tekstil malzemelerinin fonksiyonel özelliklerini geliştirmede hidrofobinlerin kullanımı üzerine yapılmış çalışmalar araştırılmıştır.
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