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Advances in Pulp and Paper Technologies, 2nd Edition

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Special Issue Editor

Special Issue Information

Dear Colleagues,

Although pulp and paper production is a mature process, there are still challenges and opportunities for the paper and pulp industries. Continuous technological improvements can further reduce environmental impacts and optimize the use of resources such as raw materials, water, and energy. This Special Issue aims to provide readers with new advances in improving product quality and process efficiency, reducing environmental impact and production costs, and expanding the ability to use different novel materials.

This Special Issue will cover all topics related to novel pulp and paper materials and technologies. Topics include, but are not limited to, the following:

Pulp and paper characterization;
Paper quality;
Paper strength;
Process efficiency;
Production costs;
Cellulose composites;
Biocomposites;
Cellulose nanofibril;
TMP refiner plates.

I look forward to receiving your contributions.

Prof. Dr. Chul-Hwan Kim
Guest Editor

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Keywords

pulp and paper characterization
paper quality
paper strength
process efficiency
production costs
cellulose composites
biocomposites
cellulose nanofibril
novel plate for manufacturing thermomechanical pulp (TMP)
TMP refiner plates
electron beam irradiation
colored broke
ISO brightness
reuse
color change

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Research

13 pages, 4745 KiB

Open AccessArticle

Effects of Zirconium-Based Crosslinkers with Different Zirconium Contents on Pigment Coating in Paper

by Hyeong-Hun Park, Chul-Hwan Kim, Tae-Gyeong Lee, Ju-Hyun Park, Min-Sik Park and Jae-Sang Lee

Appl. Sci. 2024, 14(20), 9187; https://doi.org/10.3390/app14209187 - 10 Oct 2024

Viewed by 1174

Abstract

This study investigates the impact of zirconium-based KZC series crosslinkers with varying zirconium contents and the polyamine-based crosslinker (PBC) on the properties of coated paper, focusing on key performance metrics such as viscosity, wet rub and pick resistance, dry pick resistance, gloss, brightness, ink set-off, and print mottle. The findings reveal that crosslinkers’ type and concentration significantly influence the coating colors’ viscosity, with PBC demonstrating lower low shear viscosity at lower concentrations. The KZC series showed stable viscosity across a zirconium content range of 7% to 20%, and both crosslinker types enhanced wet rub resistance at higher concentrations. Notably, the KZC series, particularly KZC7, exhibited superior wet pick resistance at increased concentrations, highlighting its effectiveness in enhancing the durability of the coating layer. All crosslinkers maintained excellent dry pick resistance, ensuring robust coating performance. While gloss and brightness were generally unaffected, KZC20, which had the highest zirconium content, slightly reduced these optical properties. Ink set-off tests indicated that the KZC series performed better at lower concentrations, whereas higher concentrations led to increased ink set-off, potentially due to over-crosslinking. Print mottle remained consistent across all crosslinkers, indicating uniform coating quality. Overall, the zirconium-based KZC series significantly enhances wet resistance and maintains high performance across various properties, though it may slightly reduce gloss and brightness and increase ink set-off at higher concentrations. PBC offers a balanced performance profile, emphasizing the need for careful crosslinker type and concentration optimization to achieve the desired coating properties for specific applications. This comprehensive evaluation provides valuable insights for developing and optimizing high-performance coated papers. Full article

(This article belongs to the Special Issue Advances in Pulp and Paper Technologies, 2nd Edition)

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