The Evaluation of Performance Properties of CMC-Based Copolymer Hydrogels Reinforced with Cellulosic Fibers Subjected to Stepwise Chemical and Mechanical Pretreatments: Moderate Alkaline Oxidation Treatment

Asena Damla Büyüküstün; Esat Gümüşkaya; Emir Erişir

doi:10.58816/duzceod.1624349

TR EN

Kademeli kimyasal ve mekanik ön işlemlerden geçirilmiş selülozik liflerle güçlendirilen CMC bazlı kopolimer hidrojellerin performans özelliklerinin değerlendirilmesi: Ilımlı alkali oksidasyon uygulaması

Öz

Bu çalışmada, selülozun hidrojelin performans özelliklerinde yan etkilerini azaltmak için selüloza mekanik rafinasyon ve alkalin oksidasyon ön işlemleri uygulanmıştır. H2O2 ile 80°C'de ılımlı oksidasyonun yanında, mekanik işlemler PFI veya supermasscolloider ile gerçekleştirilmiştir. Hidrojel üretiminde çapraz bağlayıcı olarak epiklorohidrin ve sitrik asidin etkinliği ayrı ayrı incelenmiştir. Üretilen hidrojellerin sıvı emme kapasitesi, su alma ve şişme oranları üzerinden değerlendirilmiştir. Hidrojellerin yapısal, morfolojik ve termal özellikleri FTIR, SEM ve DSC ile belirlenmiştir. IR spektraları, çapraz bağlayıcılar ile hidrojel sentezinin başarılı olduğunu göstermiştir. %10 selüloz içeren ve sitrik asit ile çapraz bağlanmış hidrojeller başlangıç kütlesinin 50 katına kadar sıvı absorbe etmesine rağmen, epiklorohidrin ile üretilen örneklerin performansının daha üstün olduğu görülmüştür. SEM görüntüleri, sitrik asit ile sentezlenen örneklerde gözenekliliğin azaldığını ve yüzey kapalılığının arttığını bu durumunda difüzyon ve absorpsiyon kapasitesinde azalmayla sonuçlandığı değerlendirilmiştir.

Anahtar Kelimeler

Hidrojel , CMC , alkali oksidasyon , süpermaskolloider rafinasyonu , PFI rafinasyonu

The Evaluation of Performance Properties of CMC-Based Copolymer Hydrogels Reinforced with Cellulosic Fibers Subjected to Stepwise Chemical and Mechanical Pretreatments: Moderate Alkaline Oxidation Treatment

Abstract

In this study, mechanical refining and alkaline oxidation pretreatments were applied to cellulose reducing the side effect of it on hydrogel performance. In addition to moderate oxidation with hydrogen peroxide at 80°C, mechanical treatment was performed using PFI or supermasscolloider. The effectiveness of epichlorohydrin and citric acid as crosslinkers for hydrogel formation was investigated separately. The liquid absorption capacity, water uptake and swelling ratios of the produced hydrogels were measured and evaluated. The structural, morphological and thermal properties of the hydrogels were analyzed using FTIR, SEM and DSC. IR spectrum revealed that the interactions with both crosslinkers were effective. Although hydrogels with 10% cellulose ratio and cross-linked with citric acid can absorb liquid up to 50 times the initial mass, the overall performance of the samples produced with epichlorohydrin was found to be superior. SEM images showed that the porosity of the hydrogel decreased and the surface closedness increased in the samples with citric acid. These phenomena were considered as a reduction in diffusion of liquids and absorption capacity.

Keywords

Hydrogel , CMC , alkaline oxidation , supermasscolloider refining , PFI refining

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Lif ve Kağıt Teknolojisi , Orman Ürünleri Kimyası

Bölüm

Araştırma Makalesi

Yazarlar

Asena Damla Büyüküstün
0000-0002-2485-3345
Türkiye

Esat Gümüşkaya
0000-0003-1892-7317
Türkiye

Emir Erişir ^*
0000-0001-5677-234X
Türkiye

Yayımlanma Tarihi

30 Haziran 2025

Gönderilme Tarihi

24 Ocak 2025

Kabul Tarihi

30 Nisan 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 21 Sayı: 1

DOI

https://doi.org/10.58816/duzceod.1624349

IZ

https://izlik.org/JA35CK46EP

APA

Büyüküstün, A. D., Gümüşkaya, E., & Erişir, E. (2025). The Evaluation of Performance Properties of CMC-Based Copolymer Hydrogels Reinforced with Cellulosic Fibers Subjected to Stepwise Chemical and Mechanical Pretreatments: Moderate Alkaline Oxidation Treatment. Düzce Üniversitesi Orman Fakültesi Ormancılık Dergisi, 21(1), 172-192. https://doi.org/10.58816/duzceod.1624349

DÜOD'da yayımlanan makaleler Creative Commons Atıf-GayriTicari 4.0 (CC BY-NC) kapsamında lisanslanmıştır.

Kademeli kimyasal ve mekanik ön işlemlerden geçirilmiş selülozik liflerle güçlendirilen CMC bazlı kopolimer hidrojellerin performans özelliklerinin değerlendirilmesi: Ilımlı alkali oksidasyon uygulaması

Öz

Anahtar Kelimeler

The Evaluation of Performance Properties of CMC-Based Copolymer Hydrogels Reinforced with Cellulosic Fibers Subjected to Stepwise Chemical and Mechanical Pretreatments: Moderate Alkaline Oxidation Treatment

Abstract

Keywords

Kaynakça

Ayrıntılar

Birincil Dil

Konular

Bölüm

Yazarlar

Yayımlanma Tarihi

Gönderilme Tarihi

Kabul Tarihi

Yayımlandığı Sayı

DOI

IZ

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