Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture

Emir Erişir; Esat Gümüşkaya

doi:10.17475/kastorman.1367919

TR EN

Selülozun TBAF/DMSO Çözücü Sisteminde KH2PO4 ve Na2HPO4 Tuz Karışımı Yerine Transesterifikasyonunda Katalizör Olarak Potasyum Karbonat

Öz

Çalışmanın amacı: Bu çalışmanın amacı TBAF/DMSO içinde çözünmüş selülozun transesterifikasyonunda potasyum karbonatı katalizör olarak değerlendirmek, uygun reaksiyon koşullarını belirlemektir. Materyal ve yöntem: 33 gram TBAF ve 165 gram sıvı DMSO’dan oluşan çözücü içerisinde mekanik olarak öğütülmüş yüksek saflık oranına sahip 10 gram çözünür hamur oda sıcaklığında 1 saat süreyle bekletilmiş ve selüloz çözeltisi üretilmiştir. Çözünen selüloza katalizör ilave edilmiş ve yönteme uygunsa ortam sıcaklığı arttırılmıştır. Reaksiyon sıcaklığına ulaşıldığında vinil asetat sisteme ilave edilmiş ve 70 saatlik transesterifikasyon reaksiyonu başlatılmıştır. Sürenin sonunda ürün sırasıyla etil alkol içerisinde çöktürülmüş ve su ile elek üzerinde yıkandıktan sonra, oda sıcaklığında kurutulmuştur. Katalizör oranı ve sıcaklığın değişiminin bağ asetil grupları üzerindeki etkileri heterojen sabunlaştırma yöntemi, FTIR, XRD, DSC, viskozite ve çözünürlük testi ile araştırılmıştır. Sonuçlar: Örneklerin DS değerlerinin 1.39 ile 2.37 arasında değişmiş ve fosfat tuzu karışımı katalizörünün kullanılması ve katalizör oranının arttırılması ile DS artmıştır. FTIR ve XRD verileri asetilasyonun başarılı bir şekilde gerçekleştiğini göstermiştir. DSC termogramlarında 283.3-291.2°C'de küçük bir endoterm mevcuttur ve bu erime noktası olarak tanımlanmıştır. Potasyum karbonat ile, örneklerin viskoziteleri ve ürün çözünürlüğünün arttığı tespit edilmiştir. Önemli vurgular: TBAF/DMSO içinde selülozun katalizör olarak potasyum karbonat ile asetilasyonu gerçekleştirilebilir. Potasyum karbonatın katalizör etkisinin DS üzerinde daha az etkili olduğu görülmüştür.

Anahtar Kelimeler

Selüloz, TBAF/DMSO, Potasyum Karbonat, Transesterifikasyon, FTIR, XRD, DSC

Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture

Öz

Aim of study: This study's goal is to evaluate potassium carbonate as a catalyst for the transesterification of cellulose dissolved in TBAF/DMSO and to identify the optimal reaction conditions. Material and methods: First, a solvent system consisting of 33 g TBAF and 165 g DMSO was prepared for 10 g dissolving pulp in this solvent system for one hour, then the cellulose solution was generated. The catalysts were added to the solution. At reaction temperature, vinyl acetate was added to the solution and the 70-h transesterification process was started. The product was precipitated in ethyl alcohol and washed with water on a sieve, and then dried at room temperature. The effects of changes in catalyst ratio and temperature on bond acetyl groups were investigated by heterogeneous saponification method, FTIR, XRD, DSC, viscosity and solubility test. Main results: The samples' DS values ranged from 1.39 to 2.37 and using phosphate salt mixture catalyst and increasing the ratio of catalyst increased the DS. FTIR and XRD data revealed that acetylation was effective. DSC thermograms showed a minor endotherm at 283.3-291.2°C, and it was identified as the melting point. With potassium carbonate, the viscosity and the solubility of the products increased. Highlights: Cellulose in TBAF/DMSO could be acetylated using potassium carbonate as the catalyst. Potassium carbonate's catalyst activity was weak on DS.

Anahtar Kelimeler

Cellulose, TBAF/DMSO, Potassium Carbonate, Transesterification, FTIR, XRD, DSC

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Orman Ürünleri Kimyası

Bölüm

Araştırma Makalesi

Yazarlar

Emir Erişir ^*
Türkiye

Esat Gümüşkaya
Türkiye

Erken Görünüm Tarihi

29 Eylül 2023

Yayımlanma Tarihi

1 Ekim 2023

Gönderilme Tarihi

22 Temmuz 2022

Kabul Tarihi

31 Mart 2023

Yayımlandığı Sayı

Yıl 2023 Cilt: 23 Sayı: 2

DOI

https://doi.org/10.17475/kastorman.1367919

IZ

https://izlik.org/JA38CR66MZ

APA

Erişir, E., & Gümüşkaya, E. (2023). Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture. Kastamonu University Journal of Forestry Faculty, 23(2), 86-98. https://doi.org/10.17475/kastorman.1367919

AMA

1.Erişir E, Gümüşkaya E. Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture. Kastamonu University Journal of Forestry Faculty. 2023;23(2):86-98. doi:10.17475/kastorman.1367919

Chicago

Erişir, Emir, ve Esat Gümüşkaya. 2023. “Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture”. Kastamonu University Journal of Forestry Faculty 23 (2): 86-98. https://doi.org/10.17475/kastorman.1367919.

EndNote

Erişir E, Gümüşkaya E (01 Ekim 2023) Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture. Kastamonu University Journal of Forestry Faculty 23 2 86–98.

IEEE

[1]E. Erişir ve E. Gümüşkaya, “Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture”, Kastamonu University Journal of Forestry Faculty, c. 23, sy 2, ss. 86–98, Eki. 2023, doi: 10.17475/kastorman.1367919.

ISNAD

Erişir, Emir - Gümüşkaya, Esat. “Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture”. Kastamonu University Journal of Forestry Faculty 23/2 (01 Ekim 2023): 86-98. https://doi.org/10.17475/kastorman.1367919.

JAMA

1.Erişir E, Gümüşkaya E. Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture. Kastamonu University Journal of Forestry Faculty. 2023;23:86–98.

MLA

Erişir, Emir, ve Esat Gümüşkaya. “Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture”. Kastamonu University Journal of Forestry Faculty, c. 23, sy 2, Ekim 2023, ss. 86-98, doi:10.17475/kastorman.1367919.

Vancouver

1.Emir Erişir, Esat Gümüşkaya. Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture. Kastamonu University Journal of Forestry Faculty. 01 Ekim 2023;23(2):86-98. doi:10.17475/kastorman.1367919

Cited By

Luminescent marking of the cellulose-based materials

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https://doi.org/10.37349/ebmx.2025.101353

Selülozun TBAF/DMSO Çözücü Sisteminde KH2PO4 ve Na2HPO4 Tuz Karışımı Yerine Transesterifikasyonunda Katalizör Olarak Potasyum Karbonat

Öz

Anahtar Kelimeler

Potassium Carbonate as Catalyst for Transesterification of Cellulose in TBAF/DMSO Solvent System Instead of KH2PO4 and Na2HPO4 Salt Mixture

Öz

Anahtar Kelimeler

Kaynakça

Ayrıntılar

Birincil Dil

Konular

Bölüm

Yazarlar

Erken Görünüm Tarihi

Yayımlanma Tarihi

Gönderilme Tarihi

Kabul Tarihi

Yayımlandığı Sayı

DOI

IZ

Kaynak Göster

Cited By

Luminescent marking of the cellulose-based materials