Chemical treatment of recycled pulp fibres for property development: Part 3. Effects on OCC pulps

• Autorzy: Sahin H. Turgut , Sutcu Abdullah , Tutus Ahmet

Identyfikatory

DOI

10.12841/wood.1644-3985.323.05

• Języki publikacji: EN

Abstrakty

EN

Chemical treatment with sodium hydroxide, formamide and ethyl acetate is shown to affect certain properties of paper made from recovered fibres. Sodium hydroxide treatment improves the brightness of sheets by approx. 0.12–17.2% under similar recycling conditions. All chemical treatments usually improve the tensile and burst strengths of sheets to some degree. The highest tensile and burst strength values of 42.09 Nm/g and 2.60 kPa m²/g were obtained at the first recycling stage with 10% ethyl acetate treatment (O10Et₁), and these represent approximately 142.2% and 100% improvement of tensile and burst strength respectively. In contrast, although the results revealed that certain chemical treatments markedly improved both tensile and burst strengths, there is some variation observed for tear strengths. The largest improvement in tear strength (72.9%) was found at the third recycling stage with 5.0% formamide treatment (O5Fa₃), followed by O10Et₃ (33.9%) and O10Na3 (29.2%). It is important to note that the highest tear strength value of 9.09 Nm²/g was found at the second recycling stage of the control samples. The results clearly show that the tensile and burst strengths of sheets can be improved by certain chemical treatments, but there is no correlation with tear strengths.

Słowa kluczowe

EN

Old Corrugated Container; recycling; chemical treatment; fibre; paper properties; tensile strength; burst strength

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2020
• Tom: vol. 63, nr 205
• Strony: 93--108
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Sahin H. Turgut

• Department. of Forest Products Engineering, Isparta University of Applied Sciences, Isparta, Turkey

autor

Sutcu Abdullah

• Department. of Forest Products Engineering, Isparta University of Applied Sciences, Isparta, Turkey

autor

Tutus Ahmet

• Department of Forest Products Engineering, Kahramanmaraş Sütçü İmam University, Kahramanmaraş, Turkey

Bibliografia

• Bajpai P. [2014]: Recycling and deinking of recovered paper. Elsevier, NY: 304p.
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• Sutcu A., Sahin H.T. [2017]: Chemical treatment of recycled pulp fibres for property development: Part 1. Effects on bleached kraft pulps. Drewno 60 [200]: 95-109. DOI: 10.12841/wood.1644-3985.214.07
• Sutcu A., Sahin H.T., Tutus A. [2018]: Chemical treatment of recycled pulp fibres for property development: Part 2. Effects on old newspapers. Drewno 61 [201]: 177-192. DOI: 10.12841/wood.1644-3985.226.06
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• List of standards
• SCAN-C 62:00 Water retention value (WRV)
• TAPPI T205 om-88 Forming hand sheets for physical tests of pulp
• TAPPI T220 sp-96 Physical testing of pulp hand sheets
• TAPPI T403 Bursting strength of paper
• TAPPI T414 Internal tearing resistance of paper (Elmendorf-type method)
• TAPPI T460 om-02 Air resistance of paper (Gurley method)
• TAPPI T494 om-96 Tensile properties of paper and paperboard (using constant rate of elongation apparatus)
• TAPPI T525 om-96 Diffuse brightness of paper, paperboard and pulp (d/0) – ultraviolet level C

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).