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Journal articles
FT-Raman spectroscopy for direct measurement of lignin concentrations in kraft pulps, TAPPI JOURNAL, January 2003 (561KB)
FT-Raman spectroscopy for direct measurement of lignin concentrations in kraft pulps, Solutions! & TAPPI JOURNAL, January 2003 (561KB)
Journal articles
Imbibition behavior of offset inks part 2: gravimetric determination of ink imbibition rate into pigmented coating structures, TAPPI JOURNAL, July 2003, Vol. 2(7) (202KB)
Imbibition behavior of offset inks part 2: gravimetric determination of ink imbibition rate into pigmented coating structures , Solutions! & TAPPI JOURNAL, July 2003, Vol. 2(7) (202KB)
Journal articles
Offset ink tack and rheology correlation part 2: determining in real time the solids content of ink-on-paper using the ink tack force-time integral, TAPPI JOURNAL, Online Exclusive, July 2003, Vol. 2(7) (267KB)
Offset ink tack and rheology correlation part 2: determining in real time the solids content of ink-on-paper using the ink tack force-time integral, TAPPI JOURNAL, Online Exclusive, July 2003, Vol. 2(7) (267KB)
Journal articles
Factors affecting fatty acid oxidation and the formation of odorous aldehydes during tmp production, TAPPI JOURNAL, July 2003, Vol. 2(7) (99KB)
Factors affecting fatty acid oxidation and the formation of odorous aldehydes during tmp production, Solutions & TAPPI JOURNAL, July 2003, Vol. 2(7) (99KB)
Journal articles
Deinking of recycled mixed office paper using two endo-glucanases, celb and cele, from the anaerobic fungus orpinomyces pc-2, TAPPI JOURNAL, July 2003, Vol. 2(7) (108KB)
Deinking of recycled mixed office paper using two endo-glucanases, celb and cele, from the anaerobic fungus orpinomyces pc-2, Solutions! & TAPPI JOURNAL, July 2003, Vol. 2(7) (108KB)
Journal articles
Magazine articles
Editorial: A preview of PEERS 2019, TAPPI Journal September 2019
ABSTRACT: Coming soon is PEERS • TAPPI’s annual Pulping, Engineering, Environmental, Recycling and Sustainability gathering for industry professionals. Held this October 27-30 in St. Louis, MO, the conference is co-located with the International Bioenergy & Bioproducts Conference (IBBC) and the 12th Research Forum on Recycling. Universities and research organizations from around the world are represented in the conference content, and below is a sampling of just a few of the many presentations that might interest TAPPI Journal readers.
Journal articles
Magazine articles
Critical parameters for tall oil separation I: The importance of ration of fatty acids to rosin acids, TAPPI Journal September 2019
ABSTRACT: Tall oil is a valuable byproduct in chemical pulping of wood, and its fractions have a large spectrum of applications as chemical precursors, detergents, and fuel. High recovery of tall oil is important for the economic and environmental profile of chemical pulp mills. The purpose of this study was to investigate critical parameters of tall oil separation from black liquor. To investigate this in a controlled way, we developed a model test system using a “synthetic” black liquor (active cooking chemicals OH- and HS- ions), a complete process for soap skimming, and determination of recovered tall oil based on solvent extraction and colorimetric analysis, with good reproducibility. We used the developed system to study the effect of the ratio of fatty acids to rosin acids on tall oil separation. When high amounts of rosin acids were present, tall oil recovery was low, while high content of fatty acids above 60% significantly promoted tall oil separation. Therefore, manipulating the content of fatty acids in black liquor before the soap skimming step can significantly affect the tall oil solubility, and hence its separation. The findings open up chemical ways to improve the tall oil yield.
Journal articles
Magazine articles
A new technique for the measurement of show-through mottle of fine paper, TAPPI Journal September 2019
ABSTRACT: Mottling within print-through and show-through is caused by the variability of the local optical properties of the sheet. This mottling is visually disturbing and a mark of poor paper quality. The ability to predict print-through mottle of printed paper by measuring show-through mottle on the unprinted sheet would be a valuable asset for paper machine control.We examined the relationship between print-through mottle and show-through mottle. We worked with nine samples of 60 lb. uncoated fine paper (90 g/m2), from various North American paper companies, that were printed on an offset press, 400K (400% Black), on both sides. A show-through mottle instrumental determination technique was developed using an existing Fast Fourier Transform-based algorithm. The nine samples examined were ranked similarly by the visual evaluation of print-through mottle and by the instrumental determination of show-through mottle. We thus established that show-through on the unprinted sheet can be used as a reliable predictor of print-through, therefore saving time and money for papermakers. We also found a significant two-sidedness in show-through for some of the samples.
Journal articles
Magazine articles
Editorial: Snapshot from the pandemic: TAPPI Journal Editorial Board shares their experiences, TAPPI Journal April 2020
ABSTRACT: In this most serious time of the global COVID-19 pandemic, I and TAPPI staff have been fortunate to work remotely and practice social distancing. The same goes for our Editorial Board. Still, the business of papermaking has continued, and those on our Board who support the industry through their work and research have had to make adjustments. Here, members of the Editorial Board share their experiences of working during the pandemic. As we all anticipate returning to a new normal that once again allows face-to-face interaction, we hope our TAPPI Journal readers stay safe and healthy as we all personally and professionally navigate this challenging time.