Nanocellulose Production and It's Modification with TEMPO, PINO, Periodate

Yıl 2018, Cilt: 18 Sayı: 1, 357 - 365, 30.04.2018

Bayram Poyraz

Öz

In this study, wood pulp was produced using Eucalyptus camaldulensis plant. In further step, nanocellulose was produced from the obtained wood pulp. Afterward, the nanocellulose was interacted with TEMPO (2,2,6,6- Tetramethyl-piperidin-1-yl)oxyl), PINO (Phthalimide N-Oxyl) and Periodate to modify the nanocellulose. Chemical, rheological and thermal properties were
carried out by using CP-MAS 13C-NMR, rheometer and thermogravimetric analysis device, respectively. As the result of present study, structures obtained from TEMPO and PINO revealed similar properties in that chemical property. Modifications that applied to the nanocellulose caused to increase both viscosity and amorphism for all of the samples. Besides, it was seen that
substances has lower thermal stability compared to the that of the nanocellulose. It has been thought that the present study will make extra contribution to industry and literature.

Anahtar Kelimeler

Nanocellulose, Modification, Production

Nanoselüloz Üretimi ve TEMPO, PINO, Periyodat ile Modifikasyonu

Öz

Bu çalışmada Eucalyptus camaldulensis bitkisi kullanılarak odun hamuru üretilmiştir. Ardından üretilen odun hamurundan nanoselüloz elde edilmiştir. Elde edilen nanoselüloz üzerine 2,2,6,6-Tetrametil-piperidin-1-il)-oksil (TEMPO), Ftalimit N-Oksil (PINO) ve Periyodat ilave edilerek nanoselülozun modifikasyonu gerçekleştirilmiştir. Elde edilen modifiye nanoselülozların kimyasal, reolojik ve termal özellikleri CP-MAS 13C-NMR, reometre ve TGA cihazları kullanılarak incelenmiştir. Çalışma sonucunda TEMPO ve PINO'nun modifikasyonu sonucu oluşan yapıların benzer kimyasal özellik gösterdiği görülmüştür. Modifikasyonlar ile örneklerin viskozluğu ve amorfluğu artarken termal kararlılıklarının ise daha düşük değerde olduğu gözlenmiştir. Mevcut çalışmanın endüstriye ve literatüre katkı sağlayacağı düşünülmektedir.

Anahtar Kelimeler

Nanoselüloz, Modifikasyon, 13C-NMR, Reoloji

Kaynakça

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