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Magazine articles
Open Access
What's new with tappi test methods?, TAPPI JOURNAL, September 2000, Vol. 83(9)

What's new with tappi test methods?, TAPPI JOURNAL, September 2000, Vol. 83(9)

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.

Magazine articles
Open Access
Views from the top: ceos offer global perspectives on the pulp and paper industries, TAPPI JOURNAL, August 1999, Vol. 82(8)

Views from the top: ceos offer global perspectives on the pulp and paper industries, TAPPI JOURNAL, August 1999, Vol. 82(8)

Magazine articles
Open Access
UGA warnell school of forest resources builds mobile lab for wastewater analyses and management, TAPPI JOURNAL, December 1999, Vol. 82(12)

UGA warnell school of forest resources builds mobile lab for wastewater analyses and management, TAPPI JOURNAL, December 1999, Vol. 82(12)

Magazine articles
Open Access
1998 tappi pulping conference, TAPPI JOURNAL, March 1999, Vo

1998 tappi pulping conference, TAPPI JOURNAL, March 1999, Vol. 82(3)

Magazine articles
Open Access
Chromizing for near-drum corrosion protection, TAPPI JOURNAL, September 1999, Vol. 82(9)

Chromizing for near-drum corrosion protection, TAPPI JOURNAL, September 1999, Vol. 82(9)

Magazine articles
Open Access
The application of continuous improvement principles and methods to safety, TAPPI JOURNAL, November 1997, Vol. 80(11)

The application of continuous improvement principles and methods to safety, TAPPI JOURNAL, November 1997, Vol. 80(11)

Magazine articles
Open Access
On management: taming the costs of accidents while improving safety, TAPPI JOURNAL, November 1997, Vol. 80(11)

On management: taming the costs of accidents while improving safety, TAPPI JOURNAL, November 1997, Vol. 80(11)

Magazine articles
Open Access
Employee commitment, involvement key to future for jack creighton, weyerhaeuser's ceo, TAPPI JOURNAL, September 1997, Vol. 80(9)

Employee commitment, involvement key to future for jack creighton, weyerhaeuser's ceo, TAPPI JOURNAL, September 1997, Vol. 80(9)

Magazine articles
Open Access
The 11th fundamental research symposium investigates papermaking materials, TAPPI JOURNAL, February 1998, Vol. 81(2)

The 11th fundamental research symposium investigates papermaking materials, TAPPI JOURNAL, February 1998, Vol. 81(2)

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