Poliakrilamid ve Tutunum Kimyasallarıyla Desteklenen Nanofibrillenmiş Selülozun Geri Dönüştürülmüş Atık Kağıtların Mekanik/Fiziksel Özellikleri Üzerine Etkisi

Year 2023, Volume: 8 Issue: 4, 742 - 748, 31.12.2023

Ayhan Tozluoğlu

https://doi.org/10.35229/jaes.1385598

Abstract

Dünya genelinde atık kağıtların yeniden değerlendirilerek (recycling) tek başlarına veya bağlayıcı ve katkı kimyasalları ile karıştırılarak başarılı bir şekilde kağıt üretimi gerçekleştirilmektedir. Atık kağıttan üretilen kağıt ve kağıt ürünlerinin üretim ve tüketim miktarları ve çeşitlilikleri her geçen yıl artmaktadır. Fakat üretilen kağıtların geri dönüşüm koşulları sebebi ile geri dönüştürülmüş liflerden üretilen kağıtların, işlenmemiş liflerden üretilen kağıtlara göre daha düşük mukavemet özelliklerine sahip fiziksel ve direnç özellikleri azalmaktadır Atık kağıtlardan fluting kağıt üretiminde güçlendirici katkı maddeleri olarak poliakrilamid ve kolloidal silika bazlı retensiyon kimyasalları ile birlikte nanoselülozların kullanımı da giderek yaygınlaşmaktadır çünkü selüloz nanofibriller (CNF) nanometre ölçeğindeki olağanüstü özellikleri ile kağıt kalitesinin arttırılmasını sağlar. Bu çalışmada fluting kağıt hamuruna; Rapid Köthen laboratuvar deney kağıdı makinesinde 130 g/m2 fluting kağıtların üretimi sırasında %2 ve %4 konsantrasyonlarında CNF, %1 konsantrasyonunda PAM ve %1 konsantrasyonda Retensiyon Kimyasalı (RK) (Perform PA 8136) gibi katkılar ilave edilerek farklı kombinasyonlarla fluting kağıdı üretilmiş olup akabinde fiziksel ve mekaniksel testlere tabi tutulmuştur. Sonuçlar incelendiğinde; mekanik özelliklerden kopma direci, patlama direnci ve iç bağ mukavemeti değerlerinin kontrol fluting hamur liflerine nazaran sırasıyla %13.9, 20.9 ve 15.2 oranında artış gösterdiği ve hava geçirgenliği (porozite) değerinin ise kontrol numunesine göre %32.9’luk bir azalma gösterdiği gözlemlenmiştir. Elde edilen bu değer üretilen kağıtların kontrol hamuruna nazaran daha iyi mukavemet özellikleri sergilediğini ortaya koymuştur.

Keywords

Atık kağıt, CNF, Güçlendirme, Mukavemet, PAM

Effect of Nanofibrillated Cellulose Reinforced with Polyacrylamide and Retention Chemicals on the Mechanical/Physical Properties of Recycled Waste Papers

Abstract

Around the world, paper is produced successfully by recycling waste paper alone or by mixing it with binders and additive chemicals. The production and consumption amounts and diversity of paper and paper products produced from waste paper are increasing every year. However, due to the recycling conditions of the produced papers, the physical and resistance properties of papers produced from recycled fibers have lower strength properties than papers produced from virgin fibers. Nanocelluloses are also used along with polyacrylamide and colloidal silica-based retention chemicals as strengthening additives in the production of fluting paper from waste papers. It is becoming increasingly widespread because cellulose nanofibrils (CNF) enable improving paper quality with their extraordinary properties at the nanometer scale. In this study, fluting paper pulp; During the production of 130 g/m2 fluting papers in the Rapid Köthen laboratory test paper machine, fluting paper was produced with different combinations by adding additives such as CNF at 2% and 4% concentrations, PAM at 1% concentration and Retention Chemical (RK) (Perform PA 8136) at 1% concentration. It was subsequently subjected to physical and mechanical tests. When the results are examined; It was observed that the mechanical properties such as tensile strength, bursting resistance and internal bond strength increased by 13.9, 20.9 and 15.2%, respectively, compared to the control fluting pulp fibers, and the air permeability (porosity) value decreased by 32.9% compared to the control sample. This value obtained revealed that the produced papers exhibited better strength properties compared to the control pulp.

Keywords

CNF, PAM, Recycled paper, Reinforcement, Strength

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