Effect of alkyl ketene dimers (AKD) sizing on the properties of pulp and paper made from recycled fibers

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TAHERI Z.; RUDI H.; JALALI TORSHIZI H.; Shidpoor r.

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Journal Paper

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Journal: Iranian Journal of Wood and Paper Science Research Year:2019 | Volume:34 | Issue:1 (66) Page(s): 112-123

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Title

Effect of alkyl ketene dimers (AKD) sizing on the properties of pulp and paper made from recycled fibers

Author(s)

TAHERI Z. | RUDI H. | JALALI TORSHIZI H. | Shidpoor r. | Issue Writer Certificate

Keywords

AKDQ1

recycled fibersQ1

pulpQ2

tensile indexQ1

contact angleQ1

Abstract

Nowadays, the barrier property against water uptake of different packaging papers which are mostly prepared using recycled fibers is of highl important for paper manufacturers. In current study, the effect of AKD sizing agent has been examined on the properties of papers made from recycled fibers of Atrak pulp and paper industries. Sizing of pulp suspension using AKD was conducted at levels of 0, 0. 5, 1 and 1. 5% based on oven dry (OD) of pulp in neutral pH ( 7), according to the TAPPI standard methods. Then, handsheets with basis weight of about 60± 3 g/m 2 were prepared and the Cobb test (60 second) and different characteristics were evaluated. According to the statistical analysis of the results, up to 1 % AKD consumption added based on OD pulp exhibited optimum level in internal sizing of these recycled fibers. In such AKD level, water uptake of size-free papers which was measured at 174± 7. 4 g/m 2, was decreased to the value of about 24± 1. 7 g/m 2 in AKD-treated papers. Furthermore, contact angle of water droplet on the paper surface increased from 35. 2º to 109. 1º . Applying 1 % of AKD, paper tensile index increased to 33. 2± 1. 01 N. m/g by 2. 4 unit compared to the base paper. Apparently, such phenomena can be attributed to the AKD potential in creating hydrogen bonds which concurrent to the development of paper water repellency, resulted in improving bonding-ability of paper network. Additionally, AKD treatment led to meaningful increase of paper opacity. This can also be attributed to the increased filler retention in the fibers network, which influences the development of light scattering from the paper surface.

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APA: Copy

TAHERI, Z., RUDI, H., JALALI TORSHIZI, H., & Shidpoor, r.. (2019). Effect of alkyl ketene dimers (AKD) sizing on the properties of pulp and paper made from recycled fibers. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 34(1 (66) ), 112-123. SID. https://sid.ir/paper/389618/en

Vancouver: Copy

TAHERI Z., RUDI H., JALALI TORSHIZI H., Shidpoor r.. Effect of alkyl ketene dimers (AKD) sizing on the properties of pulp and paper made from recycled fibers. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2019;34(1 (66) ):112-123. Available from: https://sid.ir/paper/389618/en

IEEE: Copy

Z. TAHERI, H. RUDI, H. JALALI TORSHIZI, and r. Shidpoor, “Effect of alkyl ketene dimers (AKD) sizing on the properties of pulp and paper made from recycled fibers,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 34, no. 1 (66) , pp. 112–123, 2019, [Online]. Available: https://sid.ir/paper/389618/en

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