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Journal articles
Open Access
The effects of coated magazines on deinking of newsprint after pulping and flotation, TAPPI JOURNAL, December 1998, Vol. 81(12)

The effects of coated magazines on deinking of newsprint after pulping and flotation, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Magazine articles
Open Access
Kraft pulp viscosity as a predictor of paper strength: Its uses and abuses, TAPPI Journal October 2023

ABSTRACT: For bleached kraft pulps, two factors govern paper strength: the individual fiber strength, and the bond strength that adheres the individual fibers together in the paper matrix. Inherent fiber strength is related to the length of the carbohydrate polymers, also known as the degree of polymerization (DP). Average DP (DP) is inferred by performing pulp viscosity measurements. Under certain circumstances during kraft pulping and bleaching, the average polymer lengths can be shortened, resulting in lower pulp viscosity, and may indicate fiber damage. Fiber damage typically manifests itself as a reduction in tear strength for well-bonded handsheets.This paper will review the literature on how pulp viscosity can predict paper/fiber strength and how it can be used as a diagnostic tool. It can be a means to monitor pulp quality during pulping and bleaching, as well as to alert when such operations approach a critical threshold. However, viscosity losses must be carefully and judiciously analyzed. Like most diagnostic tools, viscosity measurements can be misused and abused, which can lead to incorrect inferences about intrinsic fiber strength. This review will also cover these misuses. The overall goal is to provide the papermaker a better understanding of what pulp viscosity is, how it correlates to potential sheet strength, and what its limitations are. It will be illustrated that when pulp viscosity drops below a critical value, it will indicate an appreciable deterioration in the paper’s tear and tensile strength.

Journal articles
Open Access
New technology for papermaking: biopulping economics, TAPPI JOURNAL, December 1998, Vol. 81(12)

New technology for papermaking: biopulping economics, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Open Access
Global warming and climate change: strategic positioning for the pulp and paper industry, TAPPI JOURNAL, December 1998, Vol. 81(12)

Global warming and climate change: strategic positioning for the pulp and paper industry, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Open Access
Performance of Enzymatically Deinked Recovered Paper on Paper Machine Runnability, TAPPI JOURNAL, February 1998, Vol. 81(2)

Performance of Enzymatically Deinked Recovered Paper on Paper Machine Runnability, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
A man of ideas: 1998 Gunnar Nicholson Gold Medalist Douglas Wahren, TAPPI JOURNAL, February 1998, Vol. 81(2)

A man of ideas: 1998 gunnar nicholson gold medalist douglas wahren, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
Clonal forestry and genetic engineering: where we stand, future prospects, and potential impacts on mill operations, TAPPI JOURNAL, February 1998, Vol. 81(2)

Clonal forestry and genetic engineering: where we stand, future prospects, and potential impacts on mill operations, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
Champion international's long log pine chip mill: a nontraditional approach, TAPPI JOURNAL, February 1998, Vol. 81(2)

Champion international's long log pine chip mill: a nontraditional approach, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
The cluster rule - A summary of phase 1, TAPPI JOURNAL, February 1998, Vol. 81(2)

The cluster rule - a summary of phase 1, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
Energy marketing offered as new cost-control option, TAPPI JOURNAL, January 1998, Vol. 81(1)

Energy marketing offered as new cost-control option, TAPPI JOURNAL, January 1998, Vol. 81(1)

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