First Time Natural Cellulose Fiber Isolation and Characterization From The Stalks of Juncus compressus

Öz

In this study, cellulose isolation was carried out for the first time by applying acid/alkali to the stalks of Juncus compressus species, which has a wide distribution in Turkey and the world's wetlands. The potential of the obtained natural cellulose fibers for polymer composites has been reviewed. In this direction, chemical, physical and morphological properties of cellulose fibers were determined by FT-IR, TGA, XRD, SEM, elemental analysis (EA). J. compressus fibers were found to have a cellulose content of 43.51%. Thermogravimetric analysis revealed that the thermal degradation of the obtained cellulose fibers occurred in three stages and revealed the degradation temperature of cellulose at 337.5 °C. XRD results showed two main peaks, the crystallinity index (Crl) was calculated as 27.2. It was observed that the surface of the fibers was rough. The results of this study showed that J. compressus cellulose fibers have similar properties with different Juncus species and are suitable for the development of biocomposite materials for potential applications.

Anahtar Kelimeler

• cellulosic fiber
• alkaline pretreatment
• natural fibers
• XRD

Juncus compressus’ un Saplarından İlk Kez Doğal Selüloz Lif İzolasyonu ve Karakterizasyonu

Öz

Bu çalışmada Türkiye ve dünya sulak alanlarında geniş yayılış alanına sahip Juncus compressus türünün saplarına asit/alkali uygulaması yapılarak ilk kez selüloz izolasyonu gerçekleştirilmiştir. Elde edilen doğal selüloz liflerinin polimer kompozitler için potansiyel olma durumu gözden geçirilmiştir. Bu doğrultuda selüloz liflerinin kimyasal, fiziksel ve morfolojik özellikleri FT-IR, TGA, XRD, SEM, elemental analiz (EA) yapılarak belirlenmiştir. J. compressus liflerinin % 43.51 selüloz içeriğine sahip olduğu bulunmuştur. Termogravimetrik analiz sonuçları selüloz liflerinin termal bozunmasının üç aşamada gerçekleştiğini ortaya koymuş ve 337.5°C’ de selülozun bozunma sıcaklığını ortaya çıkarmıştır. XRD sonuçları iki ana piki göstermiş, kristallik indeksi (Crl) 27.2 olarak hesaplanmıştır. Liflerin yüzeyinin pürüzlü olduğu görülmüştür. Bu çalışmanın sonuçları J. compressus selüloz liflerinin farklı Juncus türleri ile fiziksel, kimyasal ve morfolojik olarak benzer özelliklere sahip olduğunu ve potansiyel uygulamalar için biyokompozit malzemeler geliştirilmesi için uygun olabileceğini göstermiştir.

Anahtar Kelimeler

• selülozik lif
• alkali ön işlem
• doğal lif
• XRD

Kaynakça

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