A STUDY ON OFFICE PAPER PRODUCTION FROM PRIMARY AND SECONDARY FIBERS

Yıl 2021, Cilt: 5 Sayı: 2, 433 - 444, 31.10.2021

Mustafa Çiçekler , Ahmet Tutuş

https://doi.org/10.32328/turkjforsci.953712

Öz

This study deals with the utilization of primary and secondary fibers for the office paper production. Pinus brutia (BF) and wheat straws pulps (WF) were used as primary fiber (PF), and mixed office wastes pulps were used as secondary fiber (SF). PFs were obtained from P. brutia chips and wheat straws by using kraft and soda-air cooking methods, respectively. Mixed office wastes were recycled according to INGEDE standards. Enzyme (X), oxygen (O), alkali extraction (E), hypochlorite (H), and formamidine sulphinic acid (F) bleaching stages were applied to PF and SF. The PF and SF were bleached in six stages (XOEHEH) and in three stages (XOF), respectively. Bleached PF and SF were blend in different rates (SF: 70-100%, BF and WF: 0-30%) and office papers were produced. Physical and optical properties of the papers were determined according to relevant standards. The highest physical properties (breaking length: 3.58 km, burst index: 1.51 kPa.m2 g-1) were obtained from 70% SF, 25% WF, and 5% BF blends. Papers produced only with SFs have the highest optical properties (Whiteness: 80.65 ISO%, Brightness: 94.02 ISO%, Yellowness: -20.16 E313). However, in terms of both physical and optical properties, office paper can be produced from six different PF and SF blends according to the relevant standards.

Anahtar Kelimeler

Primary fiber, secondary fiber, pulping, recycling, office paper

Destekleyen Kurum

Kahramanmaraş Sütçü İmam Üniversitesi, Bilimsel Araştırma Projeleri Koordinasyon Birimi

Proje Numarası

2014/3-33 D

Teşekkür

The Kahramanmaras Sutcu Imam University, Research Project Coordination Unit, supported this research under project number 2014/3-33 D.

BİRİNCİL VE İKİNCİL LİFLERDEN OFİS KAĞIDI ÜRETİMİ ÜZERİNE BİR ARAŞTIRMA

Öz

Ofis kağıdı üretiminde birincil ve ikincil liflerini değerlendirilmesini ele almıştır. Kızılçam (BF) ve buğday sapı (WF) lifleri birincil lif (PF) olarak atık ofis kağıt hamurları ise ikincil lif (SF) olarak kullanılmıştır. Birincil lifler kızılçam odunundan kraft yöntemi ile buğday saplarından ise soda-hava yöntemiyle üretilmiştir. Atık ofis kağıtlarından ikincil lif üretimi Uluslararası Mürekkep Giderme Endüstrisi Birliği (INGEDE) standartlarına göre gerçekleştirilmiştir. PF ve SF ağartmalarında enzim (X), oksijen (O), alkali ekstraksiyonu (E), hipoklorit (H) ve formamidin sülfinik asit (F) ağartma kademeleri kullanılmıştır. Birincil lifler altı kademede (XOEHEH), ikincil lifler ise üç kademede (XOF) ağartılmıştır. Ağartılmış PF ve SF farklı karışım oranlarında (SF: %70-100, PF: %0-30) harmanlanarak ofis kağıtları üretilmiştir. Üretilen ofis kağıtlarının mekanik ve optik özellikleri ilgili standartlara bağlı kalınarak belirlenmiştir. En yüksek mekanik özellikler (kopma uzunluğu: 3.58 km, patlama indisi 1.51 kPa.m2 g-1) %70 ikincil lif ve %30 birincil lif (%25 WF ve %5 BF) karışımlarından üretilen ofis kağıtlarında tespit edilmiştir. En yüksek optik özellikleri (beyazlık: 80.65 ISO%, parlaklık: 94.02 ISO%, sarılık: -20.16 E313) ise sadece SF kullanılarak üretilen ofis kağıtları göstermiştir. Sonuç olarak, hem mekanik hem de optik özellikler açısından ofis kağıdı, ilgili standartlara göre altı farklı PF ve SF karışımından üretilebilmektedir.

Anahtar Kelimeler

Birincil lif, ikincil lif, kağıt hamuru, geri dönüşüm, ofis kağıdı

Proje Numarası

2014/3-33 D

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