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Journal articles
Magazine articles
Open Access
Effects of tissue additives on copy paper forming and properties, TAPPI Journal February 2024

ABSTRACT: Laboratory tests were conducted in an effort to determine the effects on paper machine process attributes and the properties of paper made from recycled copy paper furnish upon the addition of chemical agents that are commonly used in the production of hygiene tissue products. Due to continuing growth in tissue and towel grades of paper, such agents are experiencing greater usage. Charge titration test results revealed that certain dry strength agents associated with tissue manufacturing have the potential to shift the balance of charge in papermaking furnish to less negative or even positive values. Creping adhesive was found to contribute to fine particle retention, especially when present at relatively high levels. Release aid and a polyacrylate dispersant had the opposite effect. Low addition levels of both a creping adhesive and a debonding agent surprisingly increased a wide range of strength attributes of paper handsheets in comparison to sheets prepared from unaltered recycled copy paper furnish. The debonding agent decreased paper strength at higher levels of addition. Such effects appear to depend not only on the expected effects of agents themselves, but also on how they affect the charge balance of the wet-end system.

Journal articles
Magazine articles
Open Access
Quantification of hardwood black liquor contamination in pine black liquor, TAPPI Journal February 2024

ABSTRACT: The presence of hardwood black liquor contamination in pine black liquor can negatively impact brownstock washer and evaporator operation, as well as reduce soap separation and yield. It is also believed to negatively impact commercial kraft lignin production. It was desired to develop a method of quantitatively determining the amount of low-level hardwood liquor contamination in pine black liquor. A method employing pyrolysis-gas chromatography mass spectrometry (py-GCMS) was developed to perform the desired measurement. Laboratory cooks with carefully controlled blends of pine and hardwood chips were prepared, and the resulting liquor was measured using this technique. Additionally, samples of pine and hardwood black liquors were blended in known quantities and analyzed. All these samples were submitted as blind samples. The resulting analysis suggests the py-GCMS method was able to accurately determine the level of hardwood contamination between 1% to 10% hardwood liquor using a low-level calibration curve prepared with coniferyl alcohol and sinapyl alcohol as standards.

Journal articles
Magazine articles
Open Access
Editoral: Investing in the future: Writing and peer-reviewing for TAPPI Journal, TAPPI Journal July 2024

ABSTRACT: Those who actively participate in TAPPI realize how much there is to gain from the networking, educational resources, career development, and other opportunities that come with this involvement. One important opportunity is the ability to share your work and expertise with others in your field, and an excellent way to do this is by taking part in the TAPPI Journal peer-review process, either as an author or a reviewer or both.

Journal articles
Open Access
A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

Journal articles
Open Access
Isolation of Residual Kraft Lignin in High Yield and Purity, JOURNAL OF PULP AND PAPER SCIENCE: VOL. 28 NO. 2 FEBRUARY 2002 [02FEBJP50.pdf]

Isolation of residual kraft lignin in high yield and purity, Journal of Pulp and Paper Science, February 2002, Vol. 28(2) (113KB)

Journal articles
Open Access
Maximization of profit through optimal selection of inventory levels and production rates in pulp and paper mills, TAPPI JOURNAL, July 2003, Vol. 2(7) (166KB)

Maximization of profit through optimal selection of inventory levels and production rates in pulp and paper mills, Solutions! & TAPPI JOURNAL, July 2003, Vol. 2(7) (166KB)

Journal articles
Open Access
Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Journal articles
Open Access
E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)

E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)

Journal articles
Open Access
Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)

Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)

Journal articles
Open Access
Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)

Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)

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